Separate Angular production vs non-production entries

packages/knip/fixtures/plugins/angular3/angular.json

@@ -0,0 +1,46 @@
+{
+  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+  "version": 1,
+  "newProjectRoot": "projects",
+  "projects": {
+    "knip-angular-example": {
+      "projectType": "application",
+      "root": "",
+      "sourceRoot": "src",
+      "prefix": "app",
+      "architect": {
+        "build": {
+          "builder": "@angular-devkit/build-angular:application",
+          "options": {
+            "browser": "src/main.ts",
+            "ssr": {
+              "entry": "src/server.ts"
+            },
+            "server": "src/main.server-for-non-prod.ts"
+          },
+          "configurations": {
+            "production": {
+              "server": "src/main.server.ts",
+              "scripts": ["src/script.js"]
+            },
+            "development": {
+              "scripts": ["src/script-for-non-prod.js"]
+            }
+          }
+        },
+        "a-non-prod-target": {
+          "builder": "@angular-devkit/build-angular:browser",
+          "options": {
+            "main": "src/main-for-non-prod.ts"
+          }
+        },
+        "test": {
+          "builder": "@angular-devkit/build-angular:karma",
+          "options": {
+            "main": "src/main-for-testing.ts"
+          }
+        }
+      }
+    }
+  }
+}

packages/knip/fixtures/plugins/angular3/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@fixtures/angular3",
+  "version": "*",
+  "devDependencies": {
+    "@angular-devkit/build-angular": "*",
+    "@angular/cli": "*",
+    "jasmine-core": "*",
+    "karma-chrome-launcher": "*",
+    "karma-coverage": "*",
+    "karma-jasmine": "*",
+    "karma-jasmine-html-reporter": "*",
+    "typescript": "*"
+  }
+}

packages/knip/src/plugins/angular/index.ts

@@ -3,7 +3,12 @@ import { type Input, toConfig, toDependency, toEntry, toProductionEntry } from '
 import { join } from '../../util/path.js';
 import { hasDependency } from '../../util/plugin.js';
 import * as karma from '../karma/helpers.js';
-import type { AngularCLIWorkspaceConfiguration, KarmaTarget, WebpackBrowserSchemaForBuildFacade } from './types.js';
+import type {
+  AngularCLIWorkspaceConfiguration,
+  KarmaTarget,
+  Project,
+  WebpackBrowserSchemaForBuildFacade,
+} from './types.js';
 
 // https://angular.io/guide/workspace-config
 
@@ -24,48 +29,40 @@ const resolveConfig: ResolveConfig<AngularCLIWorkspaceConfiguration> = async (co
 
   for (const project of Object.values(config.projects)) {
     if (!project.architect) return [];
-    for (const target of Object.values(project.architect)) {
+    for (const [targetName, target] of Object.entries(project.architect)) {
       const { options: opts, configurations: configs } = target;
       const [packageName] = typeof target.builder === 'string' ? target.builder.split(':') : [];
       if (typeof packageName === 'string') inputs.add(toDependency(packageName));
       if (opts) {
-        if ('main' in opts && typeof opts.main === 'string') {
-          inputs.add(toProductionEntry(join(cwd, opts.main)));
-        }
-        if ('browser' in opts && typeof opts.browser === 'string') {
-          inputs.add(toProductionEntry(join(cwd, opts.browser)));
-        }
-        if ('ssr' in opts && opts.ssr && typeof opts.ssr === 'object') {
-          if ('entry' in opts.ssr && typeof opts.ssr.entry === 'string') {
-            inputs.add(toProductionEntry(join(cwd, opts.ssr.entry)));
-          }
-        }
         if ('tsConfig' in opts && typeof opts.tsConfig === 'string') {
           inputs.add(toConfig('typescript', opts.tsConfig, configFilePath));
         }
-        if ('server' in opts && opts.server && typeof opts.server === 'string') {
-          inputs.add(toProductionEntry(join(cwd, opts.server)));
-        }
-        if ('fileReplacements' in opts && opts.fileReplacements && Array.isArray(opts.fileReplacements)) {
-          for (const fileReplacedBy of filesReplacedBy(opts.fileReplacements)) {
-            inputs.add(toEntry(fileReplacedBy));
-          }
-        }
-        if ('scripts' in opts && opts.scripts && Array.isArray(opts.scripts)) {
-          for (const scriptStringOrObject of opts.scripts as AngularScriptsBuildOption) {
-            const script = typeof scriptStringOrObject === 'string' ? scriptStringOrObject : scriptStringOrObject.input;
-            inputs.add(toProductionEntry(script));
+      }
+      const defaultEntriesByOption: EntriesByOption = opts ? entriesByOption(opts) : new Map();
+      const entriesByOptionByConfig: Map<string, EntriesByOption> = new Map(
+        configs ? Object.entries(configs).map(([name, opts]) => [name, entriesByOption(opts)]) : []
+      );
+      const productionEntriesByOption: EntriesByOption =
+        entriesByOptionByConfig.get(PRODUCTION_CONFIG_NAME) ?? new Map();
+      const normalizePath = (path: string) => join(cwd, path);
+      for (const [configName, entriesByOption] of entriesByOptionByConfig.entries()) {
+        for (const entries of entriesByOption.values()) {
+          for (const entry of entries) {
+            inputs.add(
+              targetName === BUILD_TARGET_NAME && configName === PRODUCTION_CONFIG_NAME
+                ? toProductionEntry(normalizePath(entry))
+                : toEntry(normalizePath(entry))
+            );
           }
         }
       }
-      if (configs) {
-        for (const [configName, config] of Object.entries(configs)) {
-          const isProductionConfig = configName === 'production';
-          if ('fileReplacements' in config && config.fileReplacements && Array.isArray(config.fileReplacements)) {
-            for (const fileReplacedBy of filesReplacedBy(config.fileReplacements)) {
-              inputs.add(isProductionConfig ? toProductionEntry(fileReplacedBy) : toEntry(fileReplacedBy));
-            }
-          }
+      for (const [option, entries] of defaultEntriesByOption.entries()) {
+        for (const entry of entries) {
+          inputs.add(
+            targetName === BUILD_TARGET_NAME && !productionEntriesByOption.get(option)?.length
+              ? toProductionEntry(normalizePath(entry))
+              : toEntry(normalizePath(entry))
+          );
         }
       }
       if (target.builder === '@angular-devkit/build-angular:karma' && opts) {
@@ -102,16 +99,48 @@ const resolveConfig: ResolveConfig<AngularCLIWorkspaceConfiguration> = async (co
   return Array.from(inputs);
 };
 
-type AngularScriptsBuildOption = Exclude<WebpackBrowserSchemaForBuildFacade['scripts'], undefined>;
-
-const filesReplacedBy = (
-  //👇 Using Webpack-based browser schema to support old `replaceWith` file replacements
-  fileReplacements: Exclude<WebpackBrowserSchemaForBuildFacade['fileReplacements'], undefined>
-): readonly string[] =>
-  fileReplacements.map(fileReplacement =>
-    'with' in fileReplacement ? fileReplacement.with : fileReplacement.replaceWith
+const entriesByOption = (opts: TargetOptions): EntriesByOption =>
+  new Map(
+    Object.entries({
+      main: 'main' in opts && opts.main && typeof opts.main === 'string' ? [opts.main] : [],
+      scripts:
+        'scripts' in opts && opts.scripts && Array.isArray(opts.scripts)
+          ? (opts.scripts as ScriptsBuildOption).map(scriptStringOrObject =>
+              typeof scriptStringOrObject === 'string' ? scriptStringOrObject : scriptStringOrObject.input
+            )
+          : [],
+      fileReplacements:
+        'fileReplacements' in opts && opts.fileReplacements && Array.isArray(opts.fileReplacements)
+          ? (opts.fileReplacements as FileReplacementsBuildOption).map(fileReplacement =>
+              'with' in fileReplacement ? fileReplacement.with : fileReplacement.replaceWith
+            )
+          : [],
+      browser: 'browser' in opts && opts.browser && typeof opts.browser === 'string' ? [opts.browser] : [],
+      server: 'server' in opts && opts.server && typeof opts.server === 'string' ? [opts.server] : [],
+      ssrEntry:
+        'ssr' in opts &&
+        opts.ssr &&
+        typeof opts.ssr === 'object' &&
+        'entry' in opts.ssr &&
+        typeof opts.ssr.entry === 'string'
+          ? [opts.ssr.entry]
+          : [],
+    })
   );
 
+type TargetOptions = Exclude<Target['options'], undefined>;
+type Target = Architect[string];
+type Architect = Exclude<Project['architect'], undefined>;
+
+type EntriesByOption = Map<string, readonly string[]>;
+
+//👇 Using Webpack-based browser schema to support old `replaceWith` file replacements
+type FileReplacementsBuildOption = Exclude<WebpackBrowserSchemaForBuildFacade['fileReplacements'], undefined>;
+type ScriptsBuildOption = Exclude<WebpackBrowserSchemaForBuildFacade['scripts'], undefined>;
+
+const PRODUCTION_CONFIG_NAME = 'production';
+const BUILD_TARGET_NAME = 'build';
+
 export default {
   title,
   enablers,

packages/knip/src/plugins/angular/types.ts

@@ -13,7 +13,7 @@ type FileVersion = number;
  * This interface was referenced by `undefined`'s JSON-Schema definition
  * via the `patternProperty` "^(?:@[a-zA-Z0-9._-]+/)?[a-zA-Z0-9._-]+$".
  */
-type Project = Project1 & {
+export type Project = Project1 & {
   cli?: {
     [k: string]: unknown;
   };

packages/knip/test/plugins/angular3.test.ts

@@ -0,0 +1,36 @@
+import { test } from 'bun:test';
+import assert from 'node:assert/strict';
+import { main } from '../../src/index.js';
+import { resolve } from '../../src/util/path.js';
+import baseArguments from '../helpers/baseArguments.js';
+import baseCounters from '../helpers/baseCounters.js';
+
+const cwd = resolve('fixtures/plugins/angular3');
+
+test('Find dependencies with the Angular plugin (production vs non-production)', async () => {
+  const { issues: nonProdIssues, counters: nonProdCounters } = await main({
+    ...baseArguments,
+    cwd,
+  });
+
+  assert(nonProdIssues.devDependencies['package.json']['@angular/cli']);
+
+  assert.deepEqual(nonProdCounters, {
+    ...baseCounters,
+    devDependencies: 1,
+    processed: 8,
+    total: 8,
+  });
+
+  const { counters: prodCounters } = await main({
+    ...baseArguments,
+    isProduction: true,
+    cwd,
+  });
+
+  assert.deepEqual(prodCounters, {
+    ...baseCounters,
+    processed: 4,
+    total: 4,
+  });
+});