diff --git a/packages/@lwc/errors/src/compiler/__tests__/compiler-errors.spec.ts b/packages/@lwc/errors/src/compiler/__tests__/compiler-errors.spec.ts
index b354b5bc06..af72fb7213 100644
--- a/packages/@lwc/errors/src/compiler/__tests__/compiler-errors.spec.ts
+++ b/packages/@lwc/errors/src/compiler/__tests__/compiler-errors.spec.ts
@@ -29,12 +29,26 @@ const ERROR_INFO = {
     level: DiagnosticLevel.Error,
 };
 
+const ERROR_INFO_WITH_URL = {
+    code: 4,
+    message: 'Test Error {0} with message {1}',
+    level: DiagnosticLevel.Error,
+    url: 'https://example.com/docs/lwc4',
+};
+
 const GENERIC_ERROR = {
     code: 100,
     message: 'Unexpected error: {0}',
     level: DiagnosticLevel.Error,
 };
 
+const GENERIC_ERROR_WITH_URL = {
+    code: 100,
+    message: 'Unexpected error: {0}',
+    level: DiagnosticLevel.Error,
+    url: 'https://example.com/docs/lwc100',
+};
+
 class CustomError extends Error {
     public lwcCode?: number;
     public filename?: string;
@@ -42,6 +56,7 @@ class CustomError extends Error {
     public column?: number;
     public start?: number;
     public length?: number;
+    public url?: string;
 
     constructor(
         message: string,
@@ -49,7 +64,8 @@ class CustomError extends Error {
         line?: number,
         column?: number,
         start?: number,
-        length?: number
+        length?: number,
+        url?: string
     ) {
         super(message);
 
@@ -60,6 +76,7 @@ class CustomError extends Error {
         this.column = column;
         this.start = start;
         this.length = length;
+        this.url = url;
     }
 }
 
@@ -93,6 +110,34 @@ describe('error handling', () => {
                 })
             ).toEqual(target);
         });
+
+        it('includes url in the compiler diagnostic when errorInfo has url', () => {
+            const target = {
+                code: 4,
+                message: 'LWC4: Test Error arg1 with message 500',
+                level: DiagnosticLevel.Error,
+                url: 'https://example.com/docs/lwc4',
+                filename: 'test.js',
+                location: DEFAULT_LOCATION,
+            };
+
+            expect(
+                generateCompilerDiagnostic(ERROR_INFO_WITH_URL, {
+                    messageArgs: ['arg1', 500],
+                    origin: {
+                        filename: 'test.js',
+                        location: DEFAULT_LOCATION,
+                    },
+                })
+            ).toEqual(target);
+        });
+
+        it('generates a compiler diagnostic with undefined url when errorInfo has no url', () => {
+            const diagnostic = generateCompilerDiagnostic(ERROR_INFO, {
+                messageArgs: ['arg1', 500],
+            });
+            expect(diagnostic.url).toBeUndefined();
+        });
     });
 
     describe('generate compiler error', () => {
@@ -141,6 +186,24 @@ describe('error handling', () => {
             });
             expect(error.location).toEqual(DEFAULT_LOCATION);
         });
+
+        it('includes url in the compiler error when errorInfo has url', () => {
+            const args = ['arg1', 10];
+            const error = generateCompilerError(ERROR_INFO_WITH_URL, {
+                messageArgs: args,
+            });
+
+            expect(error.url).toEqual('https://example.com/docs/lwc4');
+        });
+
+        it('generates a compiler error with undefined url when errorInfo has no url', () => {
+            const args = ['arg1', 10];
+            const error = generateCompilerError(ERROR_INFO, {
+                messageArgs: args,
+            });
+
+            expect(error.url).toBeUndefined();
+        });
     });
 
     describe('normalizeToCompilerError', () => {
@@ -222,6 +285,39 @@ describe('error handling', () => {
                 })
             ).toEqual(target);
         });
+
+        it('preserves url from existing compiler error', () => {
+            const error = new CompilerError(
+                100,
+                'LWC100: test err',
+                'test.js',
+                DEFAULT_LOCATION,
+                DiagnosticLevel.Error,
+                'https://example.com/docs/lwc100'
+            );
+            const normalized = normalizeToCompilerError(GENERIC_ERROR, error);
+            expect(normalized.url).toEqual('https://example.com/docs/lwc100');
+        });
+
+        it('includes url from error object when normalizing non-CompilerError', () => {
+            const error = new CustomError(
+                'test error',
+                'test.js',
+                3,
+                5,
+                16,
+                10,
+                'https://example.com/docs/custom'
+            );
+            const normalized = normalizeToCompilerError(GENERIC_ERROR, error);
+            expect(normalized.url).toEqual('https://example.com/docs/custom');
+        });
+
+        it('uses fallback url from errorInfo when error has no url', () => {
+            const error = new CustomError('test error', 'test.js', 3, 5, 16, 10);
+            const normalized = normalizeToCompilerError(GENERIC_ERROR_WITH_URL, error);
+            expect(normalized.url).toEqual('https://example.com/docs/lwc100');
+        });
     });
 
     describe('normalizeToDiagnostic', () => {
@@ -301,5 +397,164 @@ describe('error handling', () => {
                 })
             ).toEqual(target);
         });
+
+        it('preserves url from compiler error when converting to diagnostic', () => {
+            const error = new CompilerError(
+                100,
+                'LWC100: test error',
+                'test.js',
+                DEFAULT_LOCATION,
+                DiagnosticLevel.Error,
+                'https://example.com/docs/lwc100'
+            );
+            const diagnostic = normalizeToDiagnostic(GENERIC_ERROR, error);
+            expect(diagnostic.url).toEqual('https://example.com/docs/lwc100');
+        });
+
+        it('includes url from error object when normalizing non-CompilerError', () => {
+            const error = new CustomError(
+                'test error',
+                'test.js',
+                2,
+                5,
+                10,
+                5,
+                'https://example.com/docs/custom'
+            );
+            const diagnostic = normalizeToDiagnostic(GENERIC_ERROR, error);
+            expect(diagnostic.url).toEqual('https://example.com/docs/custom');
+        });
+
+        it('uses fallback url from errorInfo when error has no url', () => {
+            const error = new CustomError('test error', 'test.js', 2, 5, 10, 5);
+            const diagnostic = normalizeToDiagnostic(GENERIC_ERROR_WITH_URL, error);
+            expect(diagnostic.url).toEqual('https://example.com/docs/lwc100');
+        });
+
+        it('returns undefined url when neither error nor errorInfo has url', () => {
+            const error = new CustomError('test error', 'test.js', 2, 5, 10, 5);
+            const diagnostic = normalizeToDiagnostic(GENERIC_ERROR, error);
+            expect(diagnostic.url).toBeUndefined();
+        });
+    });
+
+    describe('CompilerError', () => {
+        describe('constructor', () => {
+            it('creates a CompilerError with all properties including url', () => {
+                const error = new CompilerError(
+                    100,
+                    'test message',
+                    'test.js',
+                    DEFAULT_LOCATION,
+                    DiagnosticLevel.Error,
+                    'https://example.com/docs/lwc100'
+                );
+
+                expect(error.code).toEqual(100);
+                expect(error.message).toEqual('test message');
+                expect(error.filename).toEqual('test.js');
+                expect(error.location).toEqual(DEFAULT_LOCATION);
+                expect(error.level).toEqual(DiagnosticLevel.Error);
+                expect(error.url).toEqual('https://example.com/docs/lwc100');
+            });
+
+            it('creates a CompilerError with undefined url when not provided', () => {
+                const error = new CompilerError(100, 'test message');
+                expect(error.url).toBeUndefined();
+            });
+        });
+
+        describe('static from', () => {
+            it('creates a CompilerError from a diagnostic preserving url', () => {
+                const diagnostic = {
+                    code: 100,
+                    message: 'test message',
+                    level: DiagnosticLevel.Error,
+                    filename: 'test.js',
+                    location: DEFAULT_LOCATION,
+                    url: 'https://example.com/docs/lwc100',
+                };
+
+                const error = CompilerError.from(diagnostic);
+
+                expect(error.code).toEqual(100);
+                expect(error.message).toEqual('test message');
+                expect(error.filename).toEqual('test.js');
+                expect(error.location).toEqual(DEFAULT_LOCATION);
+                expect(error.url).toEqual('https://example.com/docs/lwc100');
+            });
+
+            it('creates a CompilerError from a diagnostic without url', () => {
+                const diagnostic = {
+                    code: 100,
+                    message: 'test message',
+                    level: DiagnosticLevel.Error,
+                    filename: 'test.js',
+                    location: DEFAULT_LOCATION,
+                };
+
+                const error = CompilerError.from(diagnostic);
+
+                expect(error.url).toBeUndefined();
+            });
+
+            it('uses origin for filename and location when provided', () => {
+                const diagnostic = {
+                    code: 100,
+                    message: 'test message',
+                    level: DiagnosticLevel.Error,
+                    filename: 'old.js',
+                    location: { line: 1, column: 1, start: 1, length: 1 },
+                    url: 'https://example.com/docs/lwc100',
+                };
+
+                const error = CompilerError.from(diagnostic, {
+                    filename: 'new.js',
+                    location: DEFAULT_LOCATION,
+                });
+
+                expect(error.filename).toEqual('new.js');
+                expect(error.location).toEqual(DEFAULT_LOCATION);
+                expect(error.url).toEqual('https://example.com/docs/lwc100');
+            });
+        });
+
+        describe('toDiagnostic', () => {
+            it('converts CompilerError to diagnostic preserving url', () => {
+                const error = new CompilerError(
+                    100,
+                    'test message',
+                    'test.js',
+                    DEFAULT_LOCATION,
+                    DiagnosticLevel.Error,
+                    'https://example.com/docs/lwc100'
+                );
+
+                const diagnostic = error.toDiagnostic();
+
+                expect(diagnostic).toEqual({
+                    code: 100,
+                    message: 'test message',
+                    filename: 'test.js',
+                    location: DEFAULT_LOCATION,
+                    level: DiagnosticLevel.Error,
+                    url: 'https://example.com/docs/lwc100',
+                });
+            });
+
+            it('converts CompilerError to diagnostic with undefined url', () => {
+                const error = new CompilerError(
+                    100,
+                    'test message',
+                    'test.js',
+                    DEFAULT_LOCATION,
+                    DiagnosticLevel.Error
+                );
+
+                const diagnostic = error.toDiagnostic();
+
+                expect(diagnostic.url).toBeUndefined();
+            });
+        });
     });
 });
diff --git a/packages/@lwc/errors/src/compiler/errors.ts b/packages/@lwc/errors/src/compiler/errors.ts
index b03fd6f368..b676f98c80 100644
--- a/packages/@lwc/errors/src/compiler/errors.ts
+++ b/packages/@lwc/errors/src/compiler/errors.ts
@@ -56,6 +56,7 @@ export function generateCompilerDiagnostic(
         code: errorInfo.code,
         message,
         level: getEffectiveErrorLevel(errorInfo, useStrictErrorOverride),
+        url: errorInfo.url,
     };
 
     if (config && config.origin) {
@@ -81,7 +82,14 @@ export function generateCompilerError(
 ): CompilerError {
     const message = generateErrorMessage(errorInfo, config && config.messageArgs);
     const level = getEffectiveErrorLevel(errorInfo, useStrictErrorOverride);
-    const error = new CompilerError(errorInfo.code, message, undefined, undefined, level);
+    const error = new CompilerError(
+        errorInfo.code,
+        message,
+        undefined,
+        undefined,
+        level,
+        errorInfo.url
+    );
 
     if (config) {
         error.filename = getFilename(config.origin);
@@ -126,7 +134,7 @@ export function normalizeToCompilerError(
         }
         return error;
     }
-    const { code, message, filename, location, level } = convertErrorToDiagnostic(
+    const { code, message, filename, location, level, url } = convertErrorToDiagnostic(
         error,
         fallbackErrorInfo,
         origin,
@@ -138,7 +146,8 @@ export function normalizeToCompilerError(
         `${error.name}: ${message}`,
         filename,
         location,
-        level
+        level,
+        url
     );
     compilerError.stack = error.stack;
     return compilerError;
@@ -199,9 +208,10 @@ function convertErrorToDiagnostic(
         'level' in error ? error : fallbackErrorInfo,
         useStrictErrorOverride
     );
+    const url = error.url ?? fallbackErrorInfo.url;
     const filename = getFilename(origin, error);
     const location = getLocation(origin, error);
 
     // TODO [#1289]: Preserve stack information
-    return { code, message, level, filename, location };
+    return { code, message, level, filename, location, url };
 }
diff --git a/packages/@lwc/errors/src/compiler/utils.ts b/packages/@lwc/errors/src/compiler/utils.ts
index dcea8eddb0..17a1e5ff48 100644
--- a/packages/@lwc/errors/src/compiler/utils.ts
+++ b/packages/@lwc/errors/src/compiler/utils.ts
@@ -18,6 +18,7 @@ export interface CompilerDiagnostic {
     filename?: string;
     location?: Location;
     level: DiagnosticLevel;
+    url?: string;
 }
 
 export class CompilerError extends Error implements CompilerDiagnostic {
@@ -25,13 +26,15 @@ export class CompilerError extends Error implements CompilerDiagnostic {
     public filename?: string;
     public location?: Location;
     public level: DiagnosticLevel;
+    public url?: string;
 
     constructor(
         code: number,
         message: string,
         filename?: string,
         location?: Location,
-        level = DiagnosticLevel.Error
+        level = DiagnosticLevel.Error,
+        url?: string
     ) {
         super(message);
 
@@ -39,15 +42,16 @@ export class CompilerError extends Error implements CompilerDiagnostic {
         this.filename = filename;
         this.location = location;
         this.level = level;
+        this.url = url;
     }
 
     static from(diagnostic: CompilerDiagnostic, origin?: CompilerDiagnosticOrigin) {
-        const { code, message } = diagnostic;
+        const { code, message, url } = diagnostic;
 
         const filename = getFilename(origin, diagnostic);
         const location = getLocation(origin, diagnostic);
 
-        const compilerError = new CompilerError(code, message, filename, location);
+        const compilerError = new CompilerError(code, message, filename, location, undefined, url);
 
         // The stack here is misleading and doesn't point to the cause of the original error message
         // TODO [W-5712064]: Enhance diagnostics with useful stack trace and source code
@@ -62,6 +66,7 @@ export class CompilerError extends Error implements CompilerDiagnostic {
             level: this.level,
             filename: this.filename,
             location: this.location,
+            url: this.url,
         };
     }
 }
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/boolean-attributes-invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/boolean-attributes-invalid/metadata.json
index d5552a5467..4982e6f305 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/boolean-attributes-invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/boolean-attributes-invalid/metadata.json
@@ -9,7 +9,8 @@
                 "column": 8,
                 "start": 18,
                 "length": 13
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 47,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -31,7 +33,8 @@
                 "column": 14,
                 "start": 82,
                 "length": 11
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -42,7 +45,8 @@
                 "column": 11,
                 "start": 115,
                 "length": 17
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -53,7 +57,8 @@
                 "column": 12,
                 "start": 152,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -64,7 +69,8 @@
                 "column": 12,
                 "start": 188,
                 "length": 11
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -75,7 +81,8 @@
                 "column": 12,
                 "start": 220,
                 "length": 12
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -86,7 +93,8 @@
                 "column": 13,
                 "start": 265,
                 "length": 14
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -97,7 +105,8 @@
                 "column": 13,
                 "start": 330,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -108,7 +117,8 @@
                 "column": 13,
                 "start": 396,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -119,7 +129,8 @@
                 "column": 13,
                 "start": 462,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -130,7 +141,8 @@
                 "column": 13,
                 "start": 517,
                 "length": 16
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -141,7 +153,8 @@
                 "column": 13,
                 "start": 556,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -152,7 +165,8 @@
                 "column": 13,
                 "start": 594,
                 "length": 21
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -163,7 +177,8 @@
                 "column": 17,
                 "start": 655,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -174,7 +189,8 @@
                 "column": 13,
                 "start": 718,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/duplicate-props/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/duplicate-props/metadata.json
index 6853c7ba36..6a43732cc7 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/duplicate-props/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/duplicate-props/metadata.json
@@ -4,6 +4,7 @@
             "code": 1147,
             "message": "LWC1147: Found multiple HTML attributes mapping to the same JavaScript property. \"accesskey\" and \"access-key\" both map to \"accessKey\".",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 9,
@@ -15,6 +16,7 @@
             "code": 1147,
             "message": "LWC1147: Found multiple HTML attributes mapping to the same JavaScript property. \"access-key\" and \"accesskey\" both map to \"accessKey\".",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-ambiguous-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-ambiguous-attribute/metadata.json
index 64734b3988..3eff323045 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-ambiguous-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-ambiguous-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 22,
                 "length": 17
-            }
+            },
+            "url": ""
         },
         {
             "code": 1035,
@@ -20,7 +21,8 @@
                 "column": 12,
                 "start": 54,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-boolean/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-boolean/metadata.json
index b5f8b12169..ee45ceec9b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-boolean/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-boolean/metadata.json
@@ -9,7 +9,8 @@
                 "column": 8,
                 "start": 18,
                 "length": 11
-            }
+            },
+            "url": ""
         },
         {
             "code": 1036,
@@ -20,7 +21,8 @@
                 "column": 8,
                 "start": 43,
                 "length": 12
-            }
+            },
+            "url": ""
         },
         {
             "code": 1037,
@@ -31,7 +33,8 @@
                 "column": 8,
                 "start": 69,
                 "length": 13
-            }
+            },
+            "url": ""
         },
         {
             "code": 1036,
@@ -42,7 +45,8 @@
                 "column": 8,
                 "start": 96,
                 "length": 14
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-camelcase/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-camelcase/metadata.json
index 3718d80a5a..ee912c469e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-camelcase/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-camelcase/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 40,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-is/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-is/metadata.json
index 5bb5208483..e5b3f74a83 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-is/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/error-is/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 33,
                 "length": 29
-            }
+            },
+            "url": ""
         },
         {
             "code": 1063,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 71,
                 "length": 25
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/html-tag-invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/html-tag-invalid/metadata.json
index d888294c0b..a7068f4793 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/html-tag-invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/html-tag-invalid/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: unknown-attr is not valid attribute for textarea. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/textarea",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 47,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-error-underscore-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-error-underscore-attribute/metadata.json
index 99a1148855..d09272e1df 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-error-underscore-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-error-underscore-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 15,
                 "start": 58,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1124,
@@ -20,7 +21,8 @@
                 "column": 15,
                 "start": 144,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-hyphen-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-hyphen-attribute/metadata.json
index 47ac630e6b..742bdb1d9a 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-hyphen-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-hyphen-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 15,
                 "start": 295,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-non-alphanumeric/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-non-alphanumeric/metadata.json
index 3829915153..8dd1af3bed 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-non-alphanumeric/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/invalid-non-alphanumeric/metadata.json
@@ -9,7 +9,8 @@
                 "column": 15,
                 "start": 233,
                 "length": 11
-            }
+            },
+            "url": ""
         },
         {
             "code": 1125,
@@ -20,7 +21,8 @@
                 "column": 15,
                 "start": 310,
                 "length": 11
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/scoped-id/expression/not-scoped/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/scoped-id/expression/not-scoped/metadata.json
index d56d3749df..9fd7d0fa62 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/scoped-id/expression/not-scoped/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/scoped-id/expression/not-scoped/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: aria-described-by is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 9,
@@ -15,6 +16,7 @@
             "code": 1057,
             "message": "LWC1057: aria-active-descendant is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 6,
                 "column": 9,
@@ -26,6 +28,7 @@
             "code": 1057,
             "message": "LWC1057: aria-error-message is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 7,
                 "column": 9,
@@ -37,6 +40,7 @@
             "code": 1057,
             "message": "LWC1057: aria-flow-to is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 9,
@@ -48,6 +52,7 @@
             "code": 1057,
             "message": "LWC1057: aria-labelled-by is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 9,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/tabindex/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/tabindex/metadata.json
index a1884e59a0..54cc52e1f0 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/tabindex/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/tabindex/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 24
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 44,
                 "length": 21
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -31,7 +33,8 @@
                 "column": 5,
                 "start": 70,
                 "length": 30
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -42,7 +45,8 @@
                 "column": 5,
                 "start": 105,
                 "length": 23
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -53,7 +57,8 @@
                 "column": 5,
                 "start": 231,
                 "length": 32
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -64,7 +69,8 @@
                 "column": 5,
                 "start": 268,
                 "length": 29
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -75,7 +81,8 @@
                 "column": 5,
                 "start": 302,
                 "length": 38
-            }
+            },
+            "url": ""
         },
         {
             "code": 1061,
@@ -86,7 +93,8 @@
                 "column": 5,
                 "start": 345,
                 "length": 31
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/unknown-html-tag-known-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/unknown-html-tag-known-attribute/metadata.json
index ee96162369..55fbb8d045 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/unknown-html-tag-known-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/attributes/unknown-html-tag-known-attribute/metadata.json
@@ -4,6 +4,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<somefancytag>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-invalid-type/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-invalid-type/metadata.json
index 8ae9a34e18..3028a25976 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-invalid-type/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-invalid-type/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 118
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root-multiple-directives/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root-multiple-directives/metadata.json
index 251a087e67..244d4a26c6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root-multiple-directives/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root-multiple-directives/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 46
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root/metadata.json
index 6bd7cdb3b4..b1a9578f7d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/comments/error-not-on-root/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 33
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-config/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-config/metadata.json
index 3aa9a6aedb..70bf9d972a 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-config/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-config/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 45
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-native-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-native-element/metadata.json
index 9dd4381d05..b5eb5291d3 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-native-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-native-element/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 41
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-type/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-type/metadata.json
index ca1bc2dc7d..dc71a206ee 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-type/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/invalid-type/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 45
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/only-child/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/only-child/metadata.json
index 8f5fb951aa..fc6b3a944f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/only-child/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/only-child/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/sibbling/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/sibbling/metadata.json
index 9075f120c2..8c3b364166 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/sibbling/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-dynamic/sibbling/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/built-ins/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/built-ins/metadata.json
index e5354674c0..6fddbbd96b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/built-ins/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/built-ins/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 27
-            }
+            },
+            "url": ""
         },
         {
             "code": 1180,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 47,
                 "length": 30
-            }
+            },
+            "url": ""
         },
         {
             "code": 1180,
@@ -31,7 +33,8 @@
                 "column": 5,
                 "start": 82,
                 "length": 20
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/dynamic-components/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/dynamic-components/metadata.json
index c22cd055bd..3c98268ead 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/dynamic-components/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/dynamic-components/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 58
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/non-boolean-usage/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/non-boolean-usage/metadata.json
index e5a8c727fe..e80724cf24 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/non-boolean-usage/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/non-boolean-usage/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 39
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/root-template/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/root-template/metadata.json
index c4dd610702..f90c15dd38 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/root-template/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/root-template/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 34
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/template/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/template/metadata.json
index 1599bf512c..e8e1027f06 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/template/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-external/template/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 79
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-each-only/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-each-only/metadata.json
index a52cdbd11a..e895ca2156 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-each-only/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-each-only/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 38
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-item-only/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-item-only/metadata.json
index d77bfa541a..ef7323bbaf 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-item-only/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-for-item-only/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 37
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-identifier/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-identifier/metadata.json
index c7d8cc4298..d7df5db268 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-identifier/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-identifier/metadata.json
@@ -9,7 +9,8 @@
                 "column": 26,
                 "start": 36,
                 "length": 18
-            }
+            },
+            "url": ""
         },
         {
             "code": 1059,
@@ -20,7 +21,8 @@
                 "column": 43,
                 "start": 103,
                 "length": 20
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-type/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-type/metadata.json
index 161e58ddcb..81306daf11 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-type/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-invalid-type/metadata.json
@@ -9,7 +9,8 @@
                 "column": 27,
                 "start": 37,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1045,
@@ -20,7 +21,8 @@
                 "column": 10,
                 "start": 87,
                 "length": 16
-            }
+            },
+            "url": ""
         },
         {
             "code": 1046,
@@ -31,7 +33,8 @@
                 "column": 43,
                 "start": 187,
                 "length": 17
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-missing-key/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-missing-key/metadata.json
index 20153e18e2..535973dfc4 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-missing-key/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-for-each/error-missing-key/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 67,
                 "length": 14
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-expression/metadata.json
index 74b73c9e04..e3f8fd5a71 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 19,
                 "start": 43,
                 "length": 16
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-modifier/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-modifier/metadata.json
index ea5af30704..a0a5820460 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-modifier/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/error-invalid-modifier/metadata.json
@@ -9,7 +9,8 @@
                 "column": 15,
                 "start": 25,
                 "length": 12
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-custom-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-custom-element/metadata.json
index 9e168a0b38..cda10a94ce 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-custom-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-custom-element/metadata.json
@@ -4,6 +4,7 @@
             "code": 1182,
             "message": "LWC1182: Multiple if: directives found on 'c-hello'. Only one if: directive is allowed; the rest are ignored.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-standard-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-standard-element/metadata.json
index 0f964f1e7e..6e4602f9c1 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-standard-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/inline-both-standard-element/metadata.json
@@ -4,6 +4,7 @@
             "code": 1182,
             "message": "LWC1182: Multiple if: directives found on 'h1'. Only one if: directive is allowed; the rest are ignored.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/template-both/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/template-both/metadata.json
index 0c954235a1..d8a63e4557 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/template-both/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-if/template-both/metadata.json
@@ -4,6 +4,7 @@
             "code": 1182,
             "message": "LWC1182: Multiple if: directives found on 'template'. Only one if: directive is allowed; the rest are ignored.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/invalid/metadata.json
index 0bcbf61c10..575c3082c2 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/invalid/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 69,
                 "length": 48
-            }
+            },
+            "url": ""
         },
         {
             "code": 1143,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 343,
                 "length": 26
-            }
+            },
+            "url": ""
         },
         {
             "code": 1141,
@@ -31,7 +33,8 @@
                 "column": 5,
                 "start": 416,
                 "length": 38
-            }
+            },
+            "url": ""
         },
         {
             "code": 1140,
@@ -42,7 +45,8 @@
                 "column": 5,
                 "start": 510,
                 "length": 40
-            }
+            },
+            "url": ""
         },
         {
             "code": 1141,
@@ -53,12 +57,14 @@
                 "column": 5,
                 "start": 601,
                 "length": 46
-            }
+            },
+            "url": ""
         },
         {
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 21,
                 "column": 5,
@@ -75,7 +81,8 @@
                 "column": 5,
                 "start": 695,
                 "length": 61
-            }
+            },
+            "url": ""
         },
         {
             "code": 1140,
@@ -86,7 +93,8 @@
                 "column": 5,
                 "start": 818,
                 "length": 70
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/usage-with-preserve-comments/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/usage-with-preserve-comments/metadata.json
index b1a5aa7bb1..315804c955 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/usage-with-preserve-comments/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-inner-html/usage-with-preserve-comments/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 91,
                 "length": 57
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-for-each-mix/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-for-each-mix/metadata.json
index f065635a92..19497f7ec7 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-for-each-mix/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-for-each-mix/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 129
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-identifier/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-identifier/metadata.json
index efaccdbeba..7182c4c67e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-identifier/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-identifier/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 19,
                 "length": 28
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-invalid-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-invalid-expression/metadata.json
index 4283ffeaa2..7decc52210 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-invalid-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-iterator/error-invalid-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 19,
                 "length": 21
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-expression/metadata.json
index 50efddeb10..5c418f2908 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 19,
                 "length": 11
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-for-each-index-as-key/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-for-each-index-as-key/metadata.json
index 2c066e8e81..b8b7d22aef 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-for-each-index-as-key/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-for-each-index-as-key/metadata.json
@@ -9,7 +9,8 @@
                 "column": 18,
                 "start": 112,
                 "length": 11
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-for-each-index-as-key/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-for-each-index-as-key/metadata.json
index 9ac29e6657..03281d48d3 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-for-each-index-as-key/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-for-each-index-as-key/metadata.json
@@ -9,7 +9,8 @@
                 "column": 14,
                 "start": 38,
                 "length": 11
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-iterator-index-as-key/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-iterator-index-as-key/metadata.json
index 57596d9e4d..3744140d66 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-iterator-index-as-key/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-inline-iterator-index-as-key/metadata.json
@@ -9,7 +9,8 @@
                 "column": 31,
                 "start": 55,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-iterator-index-as-key/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-iterator-index-as-key/metadata.json
index 05df72d5d1..efe592fa1f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-iterator-index-as-key/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/error-iterator-index-as-key/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 78,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/outside-iterator/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/outside-iterator/metadata.json
index 41bb1608ab..d29c1e603d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/outside-iterator/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-key/outside-iterator/metadata.json
@@ -4,6 +4,7 @@
             "code": 1149,
             "message": "LWC1149: Invalid key attribute on element <div>. The key attribute should be applied to an element with for:each or iterator:*, or to a direct child of a <template> element with for:each or iterator:*. This key will be ignored, and may throw an error in future versions of LWC.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 10,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-else/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-else/metadata.json
index f0ebb05a3e..d2452b7e10 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-else/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-else/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 6,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else-nested/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else-nested/metadata.json
index 4a1051c415..b6965142f5 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else-nested/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else-nested/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 16,
                 "column": 13,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else/metadata.json
index 63e0878570..95202f902a 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-else/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 9,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-multiple/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-multiple/metadata.json
index c7362b8052..7590bd3177 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-multiple/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif-multiple/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 9,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif/metadata.json
index cc9028eb74..009c776510 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if-elseif/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 6,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if/metadata.json
index 92b87527be..4b45687f6e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/dynamic/if/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-expression/metadata.json
index 75d50952e0..9e550da756 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 74,
                 "length": 61
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/cannot-be-preceeded-by-text-node/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/cannot-be-preceeded-by-text-node/metadata.json
index c7214a199f..7d43fa96aa 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/cannot-be-preceeded-by-text-node/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/cannot-be-preceeded-by-text-node/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 77,
                 "length": 48
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/must-be-preceeded-by-if-or-elseif/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/must-be-preceeded-by-if-or-elseif/metadata.json
index c7214a199f..7d43fa96aa 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/must-be-preceeded-by-if-or-elseif/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else-if/must-be-preceeded-by-if-or-elseif/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 77,
                 "length": 48
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/cannot-be-preceeded-by-text-node/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/cannot-be-preceeded-by-text-node/metadata.json
index 2881eb52d0..b6b0967f35 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/cannot-be-preceeded-by-text-node/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/cannot-be-preceeded-by-text-node/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 77,
                 "length": 35
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/must-be-preceeded-by-if-or-elseif/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/must-be-preceeded-by-if-or-elseif/metadata.json
index 2881eb52d0..b6b0967f35 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/must-be-preceeded-by-if-or-elseif/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-sibling/else/must-be-preceeded-by-if-or-elseif/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 77,
                 "length": 35
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-string-value/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-string-value/metadata.json
index 917d9c1a12..1ebb830072 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-string-value/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-invalid-string-value/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 74,
                 "length": 52
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/elseif-else/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/elseif-else/metadata.json
index 14ca8b7858..3179261d13 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/elseif-else/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/elseif-else/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 58,
                 "length": 67
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-else/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-else/metadata.json
index 770be82ba9..bebe6d451f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-else/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-else/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 63
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-elseif/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-elseif/metadata.json
index c351d99ab2..a30d174d95 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-elseif/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/error-multiple-directives/if-elseif/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 74
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-else/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-else/metadata.json
index c8c8d583f7..febaa75ab9 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-else/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-else/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 62,
                 "length": 35
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-elseif/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-elseif/metadata.json
index 45a74f0676..ac7b549a7e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-elseif/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/if-true-elseif/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 62,
                 "length": 55
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-else/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-else/metadata.json
index 83e5dca5e3..ea1346929b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-else/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-else/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 74,
                 "length": 64
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-elseif/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-elseif/metadata.json
index 126a259441..b0c6a98cac 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-elseif/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/interop/mixed-if-true-elseif/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 74,
                 "length": 70
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/preserve-comments/preserve-comments-enabled/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/preserve-comments/preserve-comments-enabled/metadata.json
index 6a5b35a636..7fc449e96c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/preserve-comments/preserve-comments-enabled/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/preserve-comments/preserve-comments-enabled/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 95,
                 "length": 35
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/no-directives-in-slots/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/no-directives-in-slots/metadata.json
index 51020d37a9..fb5feef594 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/no-directives-in-slots/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/no-directives-in-slots/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 56
-            }
+            },
+            "url": ""
         },
         {
             "code": 1082,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 76,
                 "length": 46
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/not-in-same-condition-tree/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/not-in-same-condition-tree/metadata.json
index cdf228d12c..41128b95d4 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/not-in-same-condition-tree/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/not-in-same-condition-tree/metadata.json
@@ -4,6 +4,7 @@
             "code": 1137,
             "message": "LWC1137: Invalid duplicate slot (name=\"outside-slot\").",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 18,
                 "column": 13,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/same-branch-condition-tree/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/same-branch-condition-tree/metadata.json
index a40aae4f44..f2b90b63c5 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/same-branch-condition-tree/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/same-branch-condition-tree/metadata.json
@@ -4,6 +4,7 @@
             "code": 1137,
             "message": "LWC1137: Invalid duplicate slot (name=\"nested-slot\").",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 13,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/simple/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/simple/metadata.json
index 03aeef9f81..e84037fa4f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/simple/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-lwc-if-else/slots/duplicate-slots-warning/simple/metadata.json
@@ -4,6 +4,7 @@
             "code": 1137,
             "message": "LWC1137: Invalid duplicate slot (name=\"conditional-slot\").",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 9,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-declarative-listeners/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-declarative-listeners/metadata.json
index 259e8afd52..1a0f2a0e91 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-declarative-listeners/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-declarative-listeners/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 38
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-disabled/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-disabled/metadata.json
index 8e323ec189..6db0545027 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-disabled/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-disabled/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-not-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-not-expression/metadata.json
index be725ec598..9a613967f4 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-not-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-on/invalid-not-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/dynamic-ref/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/dynamic-ref/metadata.json
index 2df342116e..e3216340ce 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/dynamic-ref/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/dynamic-ref/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: dynamic is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 24,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/invalid/metadata.json
index 46c3ff403f..51711afc47 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-ref/invalid/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 67,
                 "length": 19
-            }
+            },
+            "url": ""
         },
         {
             "code": 1156,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 133,
                 "length": 27
-            }
+            },
+            "url": ""
         },
         {
             "code": 1156,
@@ -31,7 +33,8 @@
                 "column": 5,
                 "start": 211,
                 "length": 35
-            }
+            },
+            "url": ""
         },
         {
             "code": 1156,
@@ -42,7 +45,8 @@
                 "column": 5,
                 "start": 297,
                 "length": 35
-            }
+            },
+            "url": ""
         },
         {
             "code": 1156,
@@ -53,7 +57,8 @@
                 "column": 5,
                 "start": 381,
                 "length": 38
-            }
+            },
+            "url": ""
         },
         {
             "code": 1158,
@@ -64,7 +69,8 @@
                 "column": 9,
                 "start": 520,
                 "length": 36
-            }
+            },
+            "url": ""
         },
         {
             "code": 1158,
@@ -75,7 +81,8 @@
                 "column": 9,
                 "start": 660,
                 "length": 34
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-dom-manual/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-dom-manual/metadata.json
index c662f24f3b..672b73c75b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-dom-manual/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-dom-manual/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 39,
                 "length": 24
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-invalid-value/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-invalid-value/metadata.json
index 67e341e4a5..0ba675007d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-invalid-value/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-invalid-value/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 63
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-multipe-directives/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-multipe-directives/metadata.json
index dd9f4629a5..7c09ba2258 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-multipe-directives/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-multipe-directives/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 48
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-template/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-template/metadata.json
index 474e5896ca..adfff3bd6f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-template/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-not-on-root-template/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 35
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-attributes/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-attributes/metadata.json
index fe6d5b8cb8..ed8ac823e4 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-attributes/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-attributes/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 39,
                 "length": 28
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-event-listeners/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-event-listeners/metadata.json
index 88f04e28e7..d9f66e44c6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-event-listeners/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-render-mode/error-slots-event-listeners/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 39,
                 "length": 41
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/invalid-not-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/invalid-not-expression/metadata.json
index 1548b99e27..ebbd8f599f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/invalid-not-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/invalid-not-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 3,
                 "start": 13,
                 "length": 26
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/no-renderer-hook/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/no-renderer-hook/metadata.json
index 87679b8a7c..c81a850c61 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/no-renderer-hook/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/directive-spread/no-renderer-hook/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-config/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-config/metadata.json
index e675208cc0..fe4c98afc0 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-config/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-config/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 45
-            }
+            },
+            "url": ""
         },
         {
             "code": 1188,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 98,
                 "length": 73
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/elements/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/elements/metadata.json
index f3963f5bb3..831b3fc070 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/elements/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/elements/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 43,
                 "length": 29
-            }
+            },
+            "url": ""
         },
         {
             "code": 1186,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 104,
                 "length": 25
-            }
+            },
+            "url": ""
         },
         {
             "code": 1186,
@@ -31,7 +33,8 @@
                 "column": 5,
                 "start": 164,
                 "length": 35
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/template-root/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/template-root/metadata.json
index f0d91b1ed8..48c79f27f9 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/template-root/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-usage/template-root/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 66
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-value/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-value/metadata.json
index fca2612683..c9f28c0e41 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-value/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-is-directive-value/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 45
-            }
+            },
+            "url": ""
         },
         {
             "code": 1185,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 65,
                 "length": 38
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-usage-with-lwc-dynamic/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-usage-with-lwc-dynamic/metadata.json
index 27d6798ede..ebd142755d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-usage-with-lwc-dynamic/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/invalid-usage-with-lwc-dynamic/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 64
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/missing-is-directive/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/missing-is-directive/metadata.json
index 4842424d6b..7b1915de27 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/missing-is-directive/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/dynamic-components/invalid/missing-is-directive/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 31
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-component-handler-name/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-component-handler-name/metadata.json
index 8b112647c8..2efa4975b1 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-component-handler-name/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-component-handler-name/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 24
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-inline-javascript/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-inline-javascript/metadata.json
index 7e98000a02..159b81e78f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-inline-javascript/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-inline-javascript/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 19,
                 "length": 24
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-tag-handler-name/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-tag-handler-name/metadata.json
index 4db4415f78..b31587f527 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-tag-handler-name/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/error-tag-handler-name/metadata.json
@@ -9,7 +9,8 @@
                 "column": 14,
                 "start": 38,
                 "length": 26
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/type-invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/type-invalid/metadata.json
index 8d03230578..5d22f5582f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/events/type-invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/events/type-invalid/metadata.json
@@ -9,7 +9,8 @@
                 "column": 10,
                 "start": 20,
                 "length": 19
-            }
+            },
+            "url": ""
         },
         {
             "code": 1056,
@@ -20,7 +21,8 @@
                 "column": 10,
                 "start": 61,
                 "length": 20
-            }
+            },
+            "url": ""
         },
         {
             "code": 1055,
@@ -31,7 +33,8 @@
                 "column": 10,
                 "start": 103,
                 "length": 17
-            }
+            },
+            "url": ""
         },
         {
             "code": 1055,
@@ -42,7 +45,8 @@
                 "column": 10,
                 "start": 142,
                 "length": 22
-            }
+            },
+            "url": ""
         },
         {
             "code": 1056,
@@ -53,7 +57,8 @@
                 "column": 10,
                 "start": 186,
                 "length": 18
-            }
+            },
+            "url": ""
         },
         {
             "code": 1056,
@@ -64,7 +69,8 @@
                 "column": 10,
                 "start": 226,
                 "length": 18
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-async/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-async/metadata.json
index 125a391f66..4c5e2eaaf2 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-async/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-async/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 37
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-block-body/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-block-body/metadata.json
index 13f365157e..5aff130e16 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-block-body/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/arrow-function-block-body/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 36
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/assignment-outside-arrow/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/assignment-outside-arrow/metadata.json
index 42d78ad3e4..1d2a454fb8 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/assignment-outside-arrow/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/assignment-outside-arrow/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 27
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/await/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/await/metadata.json
index c72b606d59..db130fc88d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/await/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/await/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 23
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/bigint-literal/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/bigint-literal/metadata.json
index ac275cc1e9..f15fdb9995 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/bigint-literal/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/bigint-literal/metadata.json
@@ -9,7 +9,8 @@
                 "column": 18,
                 "start": 42,
                 "length": 27
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/class-expr/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/class-expr/metadata.json
index dfbce8e407..8378a6e51d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/class-expr/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/class-expr/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 40,
                 "length": 87
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comma-operator/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comma-operator/metadata.json
index 2d44455d65..e9c8555d54 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comma-operator/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comma-operator/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 48
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comments/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comments/metadata.json
index c9c7d80c15..0d77c46fb0 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comments/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/comments/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 40,
                 "length": 79
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/delete-operator/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/delete-operator/metadata.json
index bb5a747c95..e17bdeec58 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/delete-operator/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/delete-operator/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 28
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/function-expr/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/function-expr/metadata.json
index 5ac6889b0d..94550a2eb4 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/function-expr/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/function-expr/metadata.json
@@ -9,7 +9,8 @@
                 "column": 18,
                 "start": 42,
                 "length": 59
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true-attr/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true-attr/metadata.json
index b84381cd83..0799aec381 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true-attr/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true-attr/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 125,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true/metadata.json
index b84381cd83..0799aec381 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/experimental-complex-expressions-true/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 125,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false-attr/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false-attr/metadata.json
index 7fb90a1841..7ab5e4093b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false-attr/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false-attr/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 125,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false/metadata.json
index 7fb90a1841..7ab5e4093b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-decoding/static-content-optimization-false/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 125,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-attr/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-attr/metadata.json
index 0a7f9f7841..125ca23969 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-attr/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-attr/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 40,
                 "length": 19
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-text-node/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-text-node/metadata.json
index 1d43449667..27f2463f91 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-text-node/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/html-special-chars-text-node/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 40,
                 "length": 26
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import-meta/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import-meta/metadata.json
index 75fcb100f3..e7b19c23db 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import-meta/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import-meta/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 46
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import/metadata.json
index 8f5504f00c..fd908ef2b9 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/import/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 52
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-attribute/metadata.json
index ba8bf0fe67..c14229eb7c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 18,
                 "start": 42,
                 "length": 13
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-text-node/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-text-node/metadata.json
index d09517a49b..5226fe3b09 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-text-node/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-call-expr-text-node/metadata.json
@@ -9,7 +9,8 @@
                 "column": 18,
                 "start": 42,
                 "length": 7
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-attribute/metadata.json
index 086ed12b46..38755fa246 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 36,
                 "length": 23
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-node/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-node/metadata.json
index d8d1f798f3..47bc5f63c7 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-node/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/invalid-api-version-computed-prop-node/metadata.json
@@ -9,7 +9,8 @@
                 "column": 11,
                 "start": 10,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/less-than-unsupported-text-node/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/less-than-unsupported-text-node/metadata.json
index 897b276e26..9fb7261c62 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/less-than-unsupported-text-node/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/less-than-unsupported-text-node/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: invalid-first-character-of-tag-name. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-invalid-first-character-of-tag-name",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 22,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/new-operator/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/new-operator/metadata.json
index 3f63509ea2..95c467473e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/new-operator/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/new-operator/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 40,
                 "length": 26
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/regexp-literal/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/regexp-literal/metadata.json
index 9609d0a88f..f53d12c35d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/regexp-literal/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/regexp-literal/metadata.json
@@ -9,7 +9,8 @@
                 "column": 18,
                 "start": 42,
                 "length": 21
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/super/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/super/metadata.json
index 7f1124c446..52e248722c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/super/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/super/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 26
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/this/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/this/metadata.json
index d6788165cd..a317828ed7 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/this/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/this/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 16
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/throw/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/throw/metadata.json
index 192fbcc47b..2e259bd2c2 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/throw/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/throw/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 32
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-complex-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-complex-expression/metadata.json
index 9b150de722..3efa232d65 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-complex-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-complex-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 111,
                 "length": 12
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-computed-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-computed-expression/metadata.json
index b522807464..13756dcaaa 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-computed-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/unquoted-attribute-computed-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 16,
                 "start": 111,
                 "length": 19
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/attribute/metadata.json
index 62bc290eed..387297d390 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 17
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/text-content/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/text-content/metadata.json
index 70275ffbdd..efa396a1d5 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/text-content/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/update-outside-arrow/text-content/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 12
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/yield/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/yield/metadata.json
index 961c5e28d3..d226fd54a1 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/yield/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression-complex/invalid/yield/metadata.json
@@ -9,7 +9,8 @@
                 "column": 17,
                 "start": 41,
                 "length": 17
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/attribute-quoted-legacy/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/attribute-quoted-legacy/metadata.json
index 5b47fb057e..5c17a98b25 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/attribute-quoted-legacy/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/attribute-quoted-legacy/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 22,
                 "length": 11
-            }
+            },
+            "url": ""
         },
         {
             "code": 1034,
@@ -20,7 +21,8 @@
                 "column": 12,
                 "start": 54,
                 "length": 18
-            }
+            },
+            "url": ""
         },
         {
             "code": 1034,
@@ -31,7 +33,8 @@
                 "column": 12,
                 "start": 86,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-attribute/metadata.json
index 0b20a60911..489bcc10f0 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 36,
                 "length": 21
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-property/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-property/metadata.json
index 955d1e4dec..0a7a2c9fc2 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-property/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-computed-property/metadata.json
@@ -9,7 +9,8 @@
                 "column": 11,
                 "start": 10,
                 "length": 22
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-empty/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-empty/metadata.json
index 3095733daa..d52eb138de 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-empty/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-empty/metadata.json
@@ -9,7 +9,8 @@
                 "column": 11,
                 "start": 10,
                 "length": 9
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-method-call/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-method-call/metadata.json
index a6a98581e9..eea57c99d8 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-method-call/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-method-call/metadata.json
@@ -9,7 +9,8 @@
                 "column": 8,
                 "start": 18,
                 "length": 17
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-multiple-expressions/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-multiple-expressions/metadata.json
index b6bfa7852a..0a1ba6441c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-multiple-expressions/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-multiple-expressions/metadata.json
@@ -9,7 +9,8 @@
                 "column": 11,
                 "start": 10,
                 "length": 17
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-this-reference/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-this-reference/metadata.json
index 4717adb428..de860b2335 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-this-reference/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-this-reference/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 22,
                 "length": 18
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-trailing-semi/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-trailing-semi/metadata.json
index 28aa595cfb..eab3bc1671 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-trailing-semi/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-trailing-semi/metadata.json
@@ -9,7 +9,8 @@
                 "column": 10,
                 "start": 20,
                 "length": 6
-            }
+            },
+            "url": ""
         },
         {
             "code": 1074,
@@ -20,7 +21,8 @@
                 "column": 10,
                 "start": 42,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-unbalanced-parenthesis/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-unbalanced-parenthesis/metadata.json
index e9eda50335..26c8d4bc02 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-unbalanced-parenthesis/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/error-unbalanced-parenthesis/metadata.json
@@ -9,7 +9,8 @@
                 "column": 10,
                 "start": 20,
                 "length": 8
-            }
+            },
+            "url": ""
         },
         {
             "code": 1083,
@@ -20,7 +21,8 @@
                 "column": 10,
                 "start": 44,
                 "length": 8
-            }
+            },
+            "url": ""
         },
         {
             "code": 1083,
@@ -31,7 +33,8 @@
                 "column": 10,
                 "start": 68,
                 "length": 14
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/reverved-keyword/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/reverved-keyword/metadata.json
index 311b72b989..72f3809fbb 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/reverved-keyword/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/expression/reverved-keyword/metadata.json
@@ -9,7 +9,8 @@
                 "column": 10,
                 "start": 20,
                 "length": 7
-            }
+            },
+            "url": ""
         },
         {
             "code": 1059,
@@ -20,7 +21,8 @@
                 "column": 32,
                 "start": 65,
                 "length": 16
-            }
+            },
+            "url": ""
         },
         {
             "code": 1059,
@@ -31,7 +33,8 @@
                 "column": 32,
                 "start": 125,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1059,
@@ -42,7 +45,8 @@
                 "column": 32,
                 "start": 184,
                 "length": 18
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/non-optimized/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/non-optimized/metadata.json
index 2bce9cf6e9..1863dd8b3d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/non-optimized/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/non-optimized/metadata.json
@@ -4,6 +4,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<s\\ection>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/optimized/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/optimized/metadata.json
index 2bce9cf6e9..1863dd8b3d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/optimized/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/backslash-in-tag-name/optimized/metadata.json
@@ -4,6 +4,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<s\\ection>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/blacklisted-svg/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/blacklisted-svg/metadata.json
index c16d25e8b5..5b8a8c1961 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/blacklisted-svg/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/blacklisted-svg/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: xlink:href is not valid attribute for feImage. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/feImage",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 7,
                 "column": 22,
@@ -15,6 +16,7 @@
             "code": 1057,
             "message": "LWC1057: x is not valid attribute for feImage. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/feImage",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 16,
@@ -26,6 +28,7 @@
             "code": 1057,
             "message": "LWC1057: y is not valid attribute for feImage. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/feImage",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 22,
@@ -37,6 +40,7 @@
             "code": 1057,
             "message": "LWC1057: width is not valid attribute for feImage. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/feImage",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 28,
@@ -48,6 +52,7 @@
             "code": 1057,
             "message": "LWC1057: height is not valid attribute for feImage. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/feImage",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 41,
@@ -59,6 +64,7 @@
             "code": 1057,
             "message": "LWC1057: preserveAspectRatio is not valid attribute for feImage. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/feImage",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 9,
                 "column": 16,
@@ -75,7 +81,8 @@
                 "column": 13,
                 "start": 148,
                 "length": 130
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/unkown-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/unkown-element/metadata.json
index 1740ad4b93..8988a7e789 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/unkown-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/html-tags/unkown-element/metadata.json
@@ -4,6 +4,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<unknonwtag>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<spam>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-comments-preserve-comments/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-comments-preserve-comments/metadata.json
index b140f8400f..afb212aef3 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-comments-preserve-comments/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-comments-preserve-comments/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 37,
                 "length": 56
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element-invalid-value/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element-invalid-value/metadata.json
index 62b10cc4e6..9467686135 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element-invalid-value/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element-invalid-value/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 33
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element/metadata.json
index 3a84f6e759..46232de521 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-custom-element/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 32
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-dynamic-components/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-dynamic-components/metadata.json
index b857755a67..a5b7c20bde 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-dynamic-components/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-dynamic-components/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: end-tag-with-attributes. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-end-tag-with-attributes",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 80,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-expression/metadata.json
index c001d32941..b9fa55d5a6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 39
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-children/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-children/metadata.json
index bb6889b9e6..b7e752b628 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-children/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-children/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 68
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-value/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-value/metadata.json
index 89cbc93794..19c62318d7 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-value/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-invalid-value/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 31
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-slot-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-slot-element/metadata.json
index a111e19818..8c08353ef3 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-slot-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-dom/error-slot-element/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 30
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-tags/invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-tags/invalid/metadata.json
index b30e39e0d8..a93cf29a71 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-tags/invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/lwc-tags/invalid/metadata.json
@@ -4,6 +4,7 @@
             "code": 1184,
             "message": "LWC1184: lwc:invalid is not a special LWC tag name and will be treated as an HTML element.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<lwc:invalid>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/component-camelcase/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/component-camelcase/metadata.json
index 136d287258..31f28fa4ac 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/component-camelcase/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/component-camelcase/metadata.json
@@ -9,7 +9,8 @@
                 "column": 13,
                 "start": 23,
                 "length": 12
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-newer-api-version/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-newer-api-version/metadata.json
index 981dd575fd..a0c0d6ad84 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-newer-api-version/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-newer-api-version/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: end-tag-without-matching-open-element. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-end-tag-without-matching-open-element",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-null-api-version/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-null-api-version/metadata.json
index 981dd575fd..a0c0d6ad84 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-null-api-version/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-null-api-version/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: end-tag-without-matching-open-element. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-end-tag-without-matching-open-element",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-older-api-version/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-older-api-version/metadata.json
index a68c30c212..076527159c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-older-api-version/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-older-api-version/metadata.json
@@ -4,6 +4,7 @@
             "code": 1148,
             "message": "LWC1148: Invalid HTML syntax: end-tag-without-matching-open-element. This will not be supported in future versions of LWC. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-end-tag-without-matching-open-element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-undefined-api-version/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-undefined-api-version/metadata.json
index 981dd575fd..a0c0d6ad84 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-undefined-api-version/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/double-close-template-undefined-api-version/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: end-tag-without-matching-open-element. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-end-tag-without-matching-open-element",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-default-slot/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-default-slot/metadata.json
index d8eb23e978..738517d3a6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-default-slot/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-default-slot/metadata.json
@@ -4,6 +4,7 @@
             "code": 1137,
             "message": "LWC1137: Invalid duplicate slot (default).",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-named-slot/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-named-slot/metadata.json
index c1883eb94e..9b50546850 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-named-slot/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/duplicate-named-slot/metadata.json
@@ -4,6 +4,7 @@
             "code": 1137,
             "message": "LWC1137: Invalid duplicate slot (name=\"foo\").",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/empty-template/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/empty-template/metadata.json
index 657aac4609..a62c84d88d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/empty-template/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/empty-template/metadata.json
@@ -9,7 +9,8 @@
                 "column": 0,
                 "start": 0,
                 "length": 0
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-base-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-base-tag/metadata.json
index 83019d8fe4..95f0a7cd5d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-base-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-base-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 38
-            }
+            },
+            "url": ""
         },
         {
             "code": 1050,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 73,
                 "length": 31
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-iframe-srcdoc-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-iframe-srcdoc-attribute/metadata.json
index e6e766d973..04d9922b79 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-iframe-srcdoc-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-iframe-srcdoc-attribute/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 56
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 207,
                 "length": 56
-            }
+            },
+            "url": ""
         },
         {
             "code": 1048,
@@ -31,7 +33,8 @@
                 "column": 9,
                 "start": 414,
                 "length": 56
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-link-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-link-tag/metadata.json
index 158bb8122e..26f61ac5f9 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-link-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-link-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 23
-            }
+            },
+            "url": ""
         },
         {
             "code": 1050,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 58,
                 "length": 45
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-meta-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-meta-tag/metadata.json
index 292408cace..d85ece8b5c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-meta-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-meta-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 27
-            }
+            },
+            "url": ""
         },
         {
             "code": 1051,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 62,
                 "length": 67
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-object-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-object-tag/metadata.json
index f210a3a0c9..ccb8d230cd 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-object-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-object-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 30,
                 "length": 37
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-script-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-script-tag/metadata.json
index 0d055bb807..3f6dc3246c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-script-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-script-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 31
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 65,
                 "length": 31
-            }
+            },
+            "url": ""
         },
         {
             "code": 1050,
@@ -31,7 +33,8 @@
                 "column": 9,
                 "start": 127,
                 "length": 31
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-style-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-style-tag/metadata.json
index 70e33a7c0b..4733c4eb92 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-style-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-style-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 48,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1122,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 125,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-title-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-title-tag/metadata.json
index 5c4b1bee43..6eeaf7d23a 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-title-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/forbidden-title-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 20
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-empty-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-empty-tag/metadata.json
index 2b00ed6e65..e0e0ee03b6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-empty-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-empty-tag/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: non-void-html-element-start-tag-with-trailing-solidus. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-non-void-html-element-start-tag-with-trailing-solidus",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: closing-of-element-with-open-child-elements. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-closing-of-element-with-open-child-elements",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-id/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-id/metadata.json
index de2f60a18e..660bf49183 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-id/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-id/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 43,
                 "length": 8
-            }
+            },
+            "url": ""
         },
         {
             "code": 1040,
@@ -20,7 +21,8 @@
                 "column": 12,
                 "start": 64,
                 "length": 12
-            }
+            },
+            "url": ""
         },
         {
             "code": 1040,
@@ -31,12 +33,14 @@
                 "column": 12,
                 "start": 89,
                 "length": 10
-            }
+            },
+            "url": ""
         },
         {
             "code": 1041,
             "message": "LWC1041: Static id values are not allowed in iterators. Id values must be unique within a template and must therefore be computed with an expression.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 7,
                 "column": 16,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-root-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-root-tag/metadata.json
index 96eb29a6dd..f24f681dc0 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-root-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-root-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 42
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute-with-children/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute-with-children/metadata.json
index c5809b1c02..478d09c744 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute-with-children/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute-with-children/metadata.json
@@ -4,6 +4,7 @@
             "code": 1145,
             "message": "LWC1145: Invalid attributes detected on template. The following attributes are not supported on template tags in LWC: class. For more information, please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1153,
             "message": "LWC1153: Non-root template elements must contain valid LWC template directive attributes. Otherwise, the template and its children will be ignored. For more information please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute/metadata.json
index 4d5426322e..f4ce283329 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/invalid-attribute/metadata.json
@@ -4,6 +4,7 @@
             "code": 1145,
             "message": "LWC1145: Invalid attributes detected on template. The following attributes are not supported on template tags in LWC: onfoo. For more information, please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1153,
             "message": "LWC1153: Non-root template elements must contain valid LWC template directive attributes. Otherwise, the template and its children will be ignored. For more information please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/mixed-valid-invalid-attributes/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/mixed-valid-invalid-attributes/metadata.json
index 076debd7ec..6965e733a5 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/mixed-valid-invalid-attributes/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/mixed-valid-invalid-attributes/metadata.json
@@ -4,6 +4,7 @@
             "code": 1145,
             "message": "LWC1145: Invalid attributes detected on template. The following attributes are not supported on template tags in LWC: onfoo. For more information, please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 9,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/nested-invalid-attributes/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/nested-invalid-attributes/metadata.json
index 8424e34fcc..cfdc51cce3 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/nested-invalid-attributes/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-attribute/enableStrictTemplateSyntax-flag-disabled/nested-invalid-attributes/metadata.json
@@ -4,6 +4,7 @@
             "code": 1145,
             "message": "LWC1145: Invalid attributes detected on template. The following attributes are not supported on template tags in LWC: onfoo. For more information, please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 9,
@@ -15,6 +16,7 @@
             "code": 1145,
             "message": "LWC1145: Invalid attributes detected on template. The following attributes are not supported on template tags in LWC: class. For more information, please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 13,
@@ -26,6 +28,7 @@
             "code": 1153,
             "message": "LWC1153: Non-root template elements must contain valid LWC template directive attributes. Otherwise, the template and its children will be ignored. For more information please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 13,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-element/metadata.json
index fbefb54731..8fccd8da74 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/invalid-template-element/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 39
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/multiple-root/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/multiple-root/metadata.json
index 0466bdbbf6..b0fc045bf1 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/multiple-root/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/multiple-root/metadata.json
@@ -9,7 +9,8 @@
                 "column": 12,
                 "start": 38,
                 "length": 10
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/named-slot-in-iterator/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/named-slot-in-iterator/metadata.json
index 1d9a61c6d5..eaaea2f846 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/named-slot-in-iterator/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/named-slot-in-iterator/metadata.json
@@ -4,6 +4,7 @@
             "code": 1138,
             "message": "LWC1138: Invalid slot (name=\"james\"). A slot cannot appear inside of an iterator.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 7,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/no-closing-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/no-closing-tag/metadata.json
index 1c72b5b35c..b2397b4e06 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/no-closing-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/no-closing-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 10
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/root-no-closing-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/root-no-closing-tag/metadata.json
index 23b817fd3a..f627bbccb9 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/root-no-closing-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/root-no-closing-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 20
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/slot-in-iterator/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/slot-in-iterator/metadata.json
index 3602d92d7e..82341ea96b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/slot-in-iterator/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/slot-in-iterator/metadata.json
@@ -4,6 +4,7 @@
             "code": 1138,
             "message": "LWC1138: Invalid slot (default). A slot cannot appear inside of an iterator.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 7,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-close-template/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-close-template/metadata.json
index 7bc73406e1..e81214f8a6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-close-template/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-close-template/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: end-tag-without-matching-open-element. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-end-tag-without-matching-open-element",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 1,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-div/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-div/metadata.json
index 173e65eb79..10c3103248 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-div/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-div/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: closing-of-element-with-open-child-elements. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-closing-of-element-with-open-child-elements",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-template/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-template/metadata.json
index 4cfdaf6e09..bb79803515 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-template/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/stranded-open-template/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 0
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/title-no-close-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/title-no-close-tag/metadata.json
index 249d750a77..12e3b03cce 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/title-no-close-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/title-no-close-tag/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: eof-in-element-that-can-contain-only-text. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-eof-in-element-that-can-contain-only-text",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 1,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/unknown-root-directive/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/unknown-root-directive/metadata.json
index c8c724ff5d..c43bf2b71e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/unknown-root-directive/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/parsing-errors/unknown-root-directive/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 25
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/attribute-with-equal/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/attribute-with-equal/metadata.json
index 8eea315032..ef74a061b8 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/attribute-with-equal/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/attribute-with-equal/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: props is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 10,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/keygen/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/keygen/metadata.json
index 0723326f80..632b94fb39 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/keygen/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/keygen/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: name is not valid attribute for keygen. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 17,
@@ -15,6 +16,7 @@
             "code": 1057,
             "message": "LWC1057: challenge is not valid attribute for keygen. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 29,
@@ -26,6 +28,7 @@
             "code": 1057,
             "message": "LWC1057: keytype is not valid attribute for keygen. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 56,
@@ -37,6 +40,7 @@
             "code": 1057,
             "message": "LWC1057: keyparams is not valid attribute for keygen. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 71,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/menuitem/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/menuitem/metadata.json
index 8ceb7b2bb0..0a56021ffa 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/menuitem/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/deprecated-void-elements/menuitem/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: label is not valid attribute for menuitem. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/menuitem",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 19,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-directive/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-directive/metadata.json
index 0c32fe69d9..2da3efbb32 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-directive/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-directive/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 26
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-html-recovery/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-html-recovery/metadata.json
index 07a5a6ee82..16776a0d2e 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-html-recovery/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/invalid-html-recovery/metadata.json
@@ -4,6 +4,7 @@
             "code": 1144,
             "message": "LWC1144: Invalid HTML detected, \"<br>\" was automatically inserted within \"<template>\"; the compiled template may not match the template source.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 0,
                 "column": 0,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/static-id-in-iteration/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/static-id-in-iteration/metadata.json
index b7f0135185..4c3bb7a5ce 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/static-id-in-iteration/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/static-id-in-iteration/metadata.json
@@ -4,6 +4,7 @@
             "code": 1041,
             "message": "LWC1041: Static id values are not allowed in iterators. Id values must be unique within a template and must therefore be computed with an expression.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 15,
@@ -15,6 +16,7 @@
             "code": 1041,
             "message": "LWC1041: Static id values are not allowed in iterators. Id values must be unique within a template and must therefore be computed with an expression.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 9,
                 "column": 30,
@@ -26,6 +28,7 @@
             "code": 1041,
             "message": "LWC1041: Static id values are not allowed in iterators. Id values must be unique within a template and must therefore be computed with an expression.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 14,
                 "column": 15,
@@ -37,6 +40,7 @@
             "code": 1041,
             "message": "LWC1041: Static id values are not allowed in iterators. Id values must be unique within a template and must therefore be computed with an expression.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 19,
                 "column": 30,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/table-with-tr/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/table-with-tr/metadata.json
index d264795790..36b3d79cdc 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/table-with-tr/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/regression/table-with-tr/metadata.json
@@ -4,6 +4,7 @@
             "code": 1144,
             "message": "LWC1144: Invalid HTML detected, \"<tbody>\" was automatically inserted within \"<table>\"; the compiled template may not match the template source.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 0,
                 "column": 0,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/config/disallowed-on-custom-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/config/disallowed-on-custom-element/metadata.json
index 1f68ed7327..4e13137657 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/config/disallowed-on-custom-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/config/disallowed-on-custom-element/metadata.json
@@ -4,6 +4,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 6,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/directive-inner-html/invalid/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/directive-inner-html/invalid/metadata.json
index d08ecd3063..e99d517c11 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/directive-inner-html/invalid/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/renderer-hooks/directive-inner-html/invalid/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 69,
                 "length": 48
-            }
+            },
+            "url": ""
         },
         {
             "code": 1143,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 343,
                 "length": 26
-            }
+            },
+            "url": ""
         },
         {
             "code": 1141,
@@ -31,7 +33,8 @@
                 "column": 5,
                 "start": 416,
                 "length": 38
-            }
+            },
+            "url": ""
         },
         {
             "code": 1140,
@@ -42,7 +45,8 @@
                 "column": 5,
                 "start": 510,
                 "length": 40
-            }
+            },
+            "url": ""
         },
         {
             "code": 1141,
@@ -53,7 +57,8 @@
                 "column": 5,
                 "start": 601,
                 "length": 46
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-after/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-after/metadata.json
index 739a11a207..917520c613 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-after/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-after/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 320,
                 "length": 46
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-before/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-before/metadata.json
index 3c743fc6e4..7c6a34270b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-before/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-default-slot-before/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 131,
                 "length": 13
-            }
+            },
+            "url": ""
         },
         {
             "code": 1172,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 209,
                 "length": 46
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-named-slot-after/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-named-slot-after/metadata.json
index 1732d6dcda..08b3ca3bca 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-named-slot-after/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/if-block/invalid/duplicate-named-slot-after/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 243,
                 "length": 63
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/binding-not-expression/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/binding-not-expression/metadata.json
index 47330e3b4a..f69fa992fb 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/binding-not-expression/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/binding-not-expression/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 39,
                 "length": 34
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-default/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-default/metadata.json
index 56ceea172c..82ca897c21 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-default/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-default/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 83,
                 "length": 39
-            }
+            },
+            "url": ""
         },
         {
             "code": 1172,
@@ -20,7 +21,8 @@
                 "column": 5,
                 "start": 149,
                 "length": 39
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-named/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-named/metadata.json
index 6a94069b0f..af0fe96c13 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-named/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/duplicate-slot-named/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 99,
                 "length": 55
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-non-slot-content/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-non-slot-content/metadata.json
index 719a473d99..57f85d6489 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-non-slot-content/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-non-slot-content/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 39,
                 "length": 32
-            }
+            },
+            "url": ""
         },
         {
             "code": 1171,
@@ -20,12 +21,14 @@
                 "column": 5,
                 "start": 76,
                 "length": 40
-            }
+            },
+            "url": ""
         },
         {
             "code": 1145,
             "message": "LWC1145: Invalid attributes detected on template. The following attributes are not supported on template tags in LWC: lwc:slot-bind. For more information, please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 5,
@@ -37,6 +40,7 @@
             "code": 1153,
             "message": "LWC1153: Non-root template elements must contain valid LWC template directive attributes. Otherwise, the template and its children will be ignored. For more information please visit https://sfdc.co/template-directives",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 5,
@@ -48,6 +52,7 @@
             "code": 1187,
             "message": "LWC1187: The lwc:dynamic directive is deprecated and will be removed in a future release. Please use lwc:is instead.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 7,
                 "column": 5,
@@ -64,7 +69,8 @@
                 "column": 5,
                 "start": 204,
                 "length": 57
-            }
+            },
+            "url": ""
         },
         {
             "code": 1171,
@@ -75,7 +81,8 @@
                 "column": 5,
                 "start": 266,
                 "length": 66
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-root-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-root-tag/metadata.json
index c4a14f1c6e..6ca6f183ff 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-root-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/invalid-on-root-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 66
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-alt/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-alt/metadata.json
index ff3294afac..49629f0729 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-alt/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-alt/metadata.json
@@ -4,6 +4,7 @@
             "code": 1173,
             "message": "LWC1173: Mixing slot types disallowed for same (default) slot.",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-default/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-default/metadata.json
index 717e9166ba..14ee8c876f 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-default/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-default/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 93,
                 "length": 25
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-named/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-named/metadata.json
index 0c2e1fb9c1..896ab84c89 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-named/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/mixed-slot-named/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 109,
                 "length": 41
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/multiple-bindings/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/multiple-bindings/metadata.json
index 98ea0731f8..66613f8419 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/multiple-bindings/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/multiple-bindings/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: duplicate-attribute. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-duplicate-attribute",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 57,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/non-light-dom/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/non-light-dom/metadata.json
index 7c3da4869f..197393b99c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/non-light-dom/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-bind/non-light-dom/metadata.json
@@ -9,7 +9,8 @@
                 "column": 5,
                 "start": 15,
                 "length": 34
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/comment-direct-child/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/comment-direct-child/metadata.json
index e1610fbb90..44d0ea0c17 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/comment-direct-child/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/comment-direct-child/metadata.json
@@ -9,7 +9,8 @@
                 "column": 13,
                 "start": 76,
                 "length": 21
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-non-slot-content/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-non-slot-content/metadata.json
index ba08fd36bf..0829da06a6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-non-slot-content/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-non-slot-content/metadata.json
@@ -9,7 +9,8 @@
                 "column": 14,
                 "start": 24,
                 "length": 20
-            }
+            },
+            "url": ""
         },
         {
             "code": 1176,
@@ -20,7 +21,8 @@
                 "column": 34,
                 "start": 140,
                 "length": 20
-            }
+            },
+            "url": ""
         },
         {
             "code": 1176,
@@ -31,7 +33,8 @@
                 "column": 32,
                 "start": 260,
                 "length": 20
-            }
+            },
+            "url": ""
         },
         {
             "code": 1176,
@@ -42,7 +45,8 @@
                 "column": 11,
                 "start": 352,
                 "length": 20
-            }
+            },
+            "url": ""
         },
         {
             "code": 1176,
@@ -53,7 +57,8 @@
                 "column": 11,
                 "start": 442,
                 "length": 20
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-root-tag/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-root-tag/metadata.json
index cbadb2fff8..b9af72dd9c 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-root-tag/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/invalid-on-root-tag/metadata.json
@@ -9,7 +9,8 @@
                 "column": 1,
                 "start": 0,
                 "length": 84
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/multiple-bindings/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/multiple-bindings/metadata.json
index 660eb3171f..86f6799129 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/multiple-bindings/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/multiple-bindings/metadata.json
@@ -4,6 +4,7 @@
             "code": 1058,
             "message": "LWC1058: Invalid HTML syntax: duplicate-attribute. For more information, please visit https://html.spec.whatwg.org/multipage/parsing.html#parse-error-duplicate-attribute",
             "level": 1,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 54,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/text-direct-child/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/text-direct-child/metadata.json
index 5020a3b518..4668489b08 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/text-direct-child/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/text-direct-child/metadata.json
@@ -9,7 +9,8 @@
                 "column": 40,
                 "start": 63,
                 "length": 35
-            }
+            },
+            "url": ""
         },
         {
             "code": 1177,
@@ -20,7 +21,8 @@
                 "column": 40,
                 "start": 221,
                 "length": 38
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/value-non-string/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/value-non-string/metadata.json
index b7c6ea7f8d..d91bd61092 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/value-non-string/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/value-non-string/metadata.json
@@ -9,7 +9,8 @@
                 "column": 19,
                 "start": 43,
                 "length": 20
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-parent/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-parent/metadata.json
index 7a51ac5c05..3bcc47d042 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-parent/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-parent/metadata.json
@@ -9,7 +9,8 @@
                 "column": 13,
                 "start": 154,
                 "length": 125
-            }
+            },
+            "url": ""
         },
         {
             "code": 1178,
@@ -20,7 +21,8 @@
                 "column": 13,
                 "start": 404,
                 "length": 182
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-sibling/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-sibling/metadata.json
index b06171afcf..0062907524 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-sibling/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-for-each-sibling/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 32,
                 "length": 168
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-lwc-if-sibling/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-lwc-if-sibling/metadata.json
index 7d013a62a4..3f162d1627 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-lwc-if-sibling/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/invalid/slot-data/with-lwc-if-sibling/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 32,
                 "length": 119
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-block/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-block/metadata.json
index eb340bb2a4..a347ea7d44 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-block/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-block/metadata.json
@@ -9,7 +9,8 @@
                 "column": 54,
                 "start": 135,
                 "length": 42
-            }
+            },
+            "url": ""
         },
         {
             "code": 1177,
@@ -20,7 +21,8 @@
                 "column": 17,
                 "start": 299,
                 "length": 17
-            }
+            },
+            "url": ""
         },
         {
             "code": 1177,
@@ -31,7 +33,8 @@
                 "column": 40,
                 "start": 452,
                 "length": 38
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-true/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-true/metadata.json
index d0fc3b867f..9222dd0a43 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-true/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/scoped-slots/slot-content-with-directives/invalid/if-true/metadata.json
@@ -9,7 +9,8 @@
                 "column": 55,
                 "start": 125,
                 "length": 42
-            }
+            },
+            "url": ""
         },
         {
             "code": 1177,
@@ -20,7 +21,8 @@
                 "column": 17,
                 "start": 287,
                 "length": 17
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-definition-dynamic-name/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-definition-dynamic-name/metadata.json
index 96efa32d1d..1fbab66839 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-definition-dynamic-name/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-definition-dynamic-name/metadata.json
@@ -9,7 +9,8 @@
                 "column": 11,
                 "start": 21,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-slot-and-directive/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-slot-and-directive/metadata.json
index d28a52363f..acc027cc4b 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-slot-and-directive/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/error-slot-and-directive/metadata.json
@@ -9,7 +9,8 @@
                 "column": 8,
                 "start": 32,
                 "length": 31
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-element/metadata.json
index 20e050d9c8..b0493435a4 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-element/metadata.json
@@ -4,6 +4,7 @@
             "code": 1201,
             "message": "LWC1201: The slot attribute in <span> will be ignored due to its ancestor <div>. It must be a direct child of the containing component.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 15,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-slot/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-slot/metadata.json
index 9b3165200d..c7a6773a1d 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-slot/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/grandparent-slot/metadata.json
@@ -4,6 +4,7 @@
             "code": 1201,
             "message": "LWC1201: The slot attribute in <span> will be ignored due to its ancestor <slot>. It must be a direct child of the containing component.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 15,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-element/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-element/metadata.json
index f69e2e0404..216146b3df 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-element/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-element/metadata.json
@@ -4,6 +4,7 @@
             "code": 1201,
             "message": "LWC1201: The slot attribute in <span> will be ignored due to its ancestor <div>. It must be a direct child of the containing component.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 19,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-slot/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-slot/metadata.json
index 05cccb9fff..39cd587470 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-slot/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/slots/ignored/parent-slot/metadata.json
@@ -4,6 +4,7 @@
             "code": 1201,
             "message": "LWC1201: The slot attribute in <span> will be ignored due to its ancestor <slot>. It must be a direct child of the containing component.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 4,
                 "column": 19,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/non-optimized/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/non-optimized/metadata.json
index 7dcba03183..7c4588a3a1 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/non-optimized/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/non-optimized/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: a`b`c is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 10,
@@ -15,6 +16,7 @@
             "code": 1057,
             "message": "LWC1057: a`b`c is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 10,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/optimized/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/optimized/metadata.json
index 7dcba03183..7c4588a3a1 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/optimized/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/attr-name-escape/optimized/metadata.json
@@ -4,6 +4,7 @@
             "code": 1057,
             "message": "LWC1057: a`b`c is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 10,
@@ -15,6 +16,7 @@
             "code": 1057,
             "message": "LWC1057: a`b`c is not valid attribute for div. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element/div",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 10,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-invalid-in-slot/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-invalid-in-slot/metadata.json
index ac8acbc7b0..45b03ff620 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-invalid-in-slot/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-invalid-in-slot/metadata.json
@@ -4,6 +4,7 @@
             "code": 1149,
             "message": "LWC1149: Invalid key attribute on element <div>. The key attribute should be applied to an element with for:each or iterator:*, or to a direct child of a <template> element with for:each or iterator:*. This key will be ignored, and may throw an error in future versions of LWC.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 3,
                 "column": 14,
@@ -15,6 +16,7 @@
             "code": 1149,
             "message": "LWC1149: Invalid key attribute on element <div>. The key attribute should be applied to an element with for:each or iterator:*, or to a direct child of a <template> element with for:each or iterator:*. This key will be ignored, and may throw an error in future versions of LWC.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 6,
                 "column": 14,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-non-top-level/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-non-top-level/metadata.json
index c3d99787f6..5632322bd9 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-non-top-level/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/key-non-top-level/metadata.json
@@ -4,6 +4,7 @@
             "code": 1149,
             "message": "LWC1149: Invalid key attribute on element <td>. The key attribute should be applied to an element with for:each or iterator:*, or to a direct child of a <template> element with for:each or iterator:*. This key will be ignored, and may throw an error in future versions of LWC.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 6,
                 "column": 25,
@@ -15,6 +16,7 @@
             "code": 1149,
             "message": "LWC1149: Invalid key attribute on element <td>. The key attribute should be applied to an element with for:each or iterator:*, or to a direct child of a <template> element with for:each or iterator:*. This key will be ignored, and may throw an error in future versions of LWC.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 7,
                 "column": 25,
@@ -26,6 +28,7 @@
             "code": 1149,
             "message": "LWC1149: Invalid key attribute on element <td>. The key attribute should be applied to an element with for:each or iterator:*, or to a direct child of a <template> element with for:each or iterator:*. This key will be ignored, and may throw an error in future versions of LWC.",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 8,
                 "column": 25,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/no-escaping-tags/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/no-escaping-tags/metadata.json
index 74948af4d0..e7b3cc8fec 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/no-escaping-tags/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/no-escaping-tags/metadata.json
@@ -4,6 +4,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<xmp>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 2,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<noembed>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 10,
                 "column": 5,
@@ -26,6 +28,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<noframes>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 13,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/template-string-escape/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/template-string-escape/metadata.json
index 4059c1b162..6dbc6c0526 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/template-string-escape/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/static-content/template-string-escape/metadata.json
@@ -4,6 +4,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<xmp>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 5,
                 "column": 5,
@@ -15,6 +16,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<xmp>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 10,
                 "column": 5,
@@ -26,6 +28,7 @@
             "code": 1123,
             "message": "LWC1123: Unknown html tag '<xmp>'. For more information refer to https://developer.mozilla.org/en-US/docs/Web/HTML/Element and https://developer.mozilla.org/en-US/docs/Web/SVG/Element",
             "level": 2,
+            "url": "",
             "location": {
                 "line": 15,
                 "column": 5,
diff --git a/packages/@lwc/template-compiler/src/__tests__/fixtures/svg/invalid-svg/metadata.json b/packages/@lwc/template-compiler/src/__tests__/fixtures/svg/invalid-svg/metadata.json
index b14f8896ec..eda96277e6 100644
--- a/packages/@lwc/template-compiler/src/__tests__/fixtures/svg/invalid-svg/metadata.json
+++ b/packages/@lwc/template-compiler/src/__tests__/fixtures/svg/invalid-svg/metadata.json
@@ -9,7 +9,8 @@
                 "column": 9,
                 "start": 339,
                 "length": 17
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -20,7 +21,8 @@
                 "column": 9,
                 "start": 365,
                 "length": 19
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -31,7 +33,8 @@
                 "column": 9,
                 "start": 415,
                 "length": 23
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -42,7 +45,8 @@
                 "column": 9,
                 "start": 447,
                 "length": 37
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -53,7 +57,8 @@
                 "column": 9,
                 "start": 493,
                 "length": 33
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -64,7 +69,8 @@
                 "column": 9,
                 "start": 535,
                 "length": 31
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -75,7 +81,8 @@
                 "column": 9,
                 "start": 575,
                 "length": 31
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -86,7 +93,8 @@
                 "column": 9,
                 "start": 727,
                 "length": 15
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -97,7 +105,8 @@
                 "column": 9,
                 "start": 751,
                 "length": 23
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -108,7 +117,8 @@
                 "column": 9,
                 "start": 807,
                 "length": 21
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -119,7 +129,8 @@
                 "column": 9,
                 "start": 837,
                 "length": 31
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -130,7 +141,8 @@
                 "column": 9,
                 "start": 901,
                 "length": 17
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -141,7 +153,8 @@
                 "column": 9,
                 "start": 927,
                 "length": 11
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -152,7 +165,8 @@
                 "column": 9,
                 "start": 947,
                 "length": 25
-            }
+            },
+            "url": ""
         },
         {
             "code": 1049,
@@ -163,7 +177,8 @@
                 "column": 9,
                 "start": 981,
                 "length": 15
-            }
+            },
+            "url": ""
         }
     ]
 }
\ No newline at end of file