Modernisation 19 - No prototype builtins

.claude/commands/lint-enforce.md

@@ -10,5 +10,3 @@ Please follow the following process when I ask you to enfore a new lint rule usi
 8. Add the changes
 9. Commit the changes
 10. Push the changes
-
-You do not need to ask before updating biome.json, running tests, using --fix in safe mode, fetching coment from biomejs.dev, or updating the changelog

CHANGELOG.md

@@ -18,6 +18,7 @@
 - Replace string concatenation with modern template literals
 - Remove redundant 'use strict' directives as modules are automatically in strict mode
 - Refactor assignment-in-expression patterns to improve code clarity and readability
+- Replace Object.prototype.hasOwnProperty() with safer Object.hasOwn() method
 - Enforce strict equality checks (=== and !==) instead of loose equality (== and !=)
 - Replace global isNaN with Number.isNaN for safer type checking
 - Ensure no variable redeclarations exist to prevent shadowing issues

biome.json

@@ -24,7 +24,7 @@
         "noAsyncPromiseExecutor": "off",
         "noGlobalIsNan": "error",
         "noGlobalIsFinite": "error",
-        "noPrototypeBuiltins": "off",
+        "noPrototypeBuiltins": "error",
         "noVar": "error"
       }
     }

lib/codec.js

@@ -51,7 +51,7 @@ function encodeFieldValue(buffer, value, offset) {
   let type = typeof value,
     val = value;
   // A trapdoor for specifying a type, e.g., timestamp
-  if (value && type === 'object' && value.hasOwnProperty('!')) {
+  if (value && type === 'object' && Object.hasOwn(value, '!')) {
     val = value.value;
     type = value['!'];
   }
@@ -190,7 +190,7 @@ function encodeFieldValue(buffer, value, offset) {
       break;
     case 'decimal':
       tag('D');
-      if (val.hasOwnProperty('places') && val.hasOwnProperty('digits') && val.places >= 0 && val.places < 256) {
+      if (Object.hasOwn(val, 'places') && Object.hasOwn(val, 'digits') && val.places >= 0 && val.places < 256) {
         buffer[offset] = val.places;
         offset++;
         buffer.writeUInt32BE(val.digits, offset);