fix(esbuild): object sourcemap by overriding Object.prototype.toString (

#399) * Fix esbuild object sourcemap by overriding Object.prototype.toString * Switch from Object.hasOwn to Object.prototype.hasOwnProperty
unjs · Aug 15, 2024 · 5d91695 · 5d91695
1 parent c28d727
commit 5d91695
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/esbuild/utils.ts b/src/esbuild/utils.ts
@@ -46,15 +46,15 @@ export function unwrapLoader(
 // `load` and `transform` may return a sourcemap without toString and toUrl,
 // but esbuild needs them, we fix the two methods
 export function fixSourceMap(map: EncodedSourceMap): SourceMap {
-  if (!('toString' in map)) {
+  if (!Object.prototype.hasOwnProperty.call(map, 'toString')) {
     Object.defineProperty(map, 'toString', {
       enumerable: false,
       value: function toString() {
         return JSON.stringify(this)
       },
     })
   }
-  if (!('toUrl' in map)) {
+  if (!Object.prototype.hasOwnProperty.call(map, 'toUrl')) {
     Object.defineProperty(map, 'toUrl', {
       enumerable: false,
       value: function toUrl() {