fix: avoid using Promise.allSettled in preload function (#19805)

Author: novlan1

packages/vite/src/node/plugins/importAnalysisBuild.ts

@@ -95,7 +95,21 @@ function preload(
     // in that case fallback to getAttribute
     const cspNonce = cspNonceMeta?.nonce || cspNonceMeta?.getAttribute('nonce')
 
-    promise = Promise.allSettled(
+    // Promise.allSettled is not supported by Chrome 64-75, Firefox 67-70, Safari 11.1-12.1
+    function allSettled<T>(
+      promises: Array<T | PromiseLike<T>>,
+    ): Promise<PromiseSettledResult<T>[]> {
+      return Promise.all(
+        promises.map((p) =>
+          Promise.resolve(p).then(
+            (value: T) => ({ status: 'fulfilled' as const, value }),
+            (reason: unknown) => ({ status: 'rejected' as const, reason }),
+          ),
+        ),
+      )
+    }
+
+    promise = allSettled(
       deps.map((dep) => {
         // @ts-expect-error assetsURL is declared before preload.toString()
         dep = assetsURL(dep, importerUrl)

playground/js-sourcemap/__tests__/js-sourcemap.spec.ts

@@ -143,7 +143,7 @@ describe.runIf(isBuild)('build tests', () => {
       {
         "debugId": "00000000-0000-0000-0000-000000000000",
         "ignoreList": [],
-        "mappings": ";+8BAAA,OAAO,2BAAuB,0BAE9B,QAAQ,IAAI,uBAAuB",
+        "mappings": ";4kCAAA,OAAO,2BAAuB,0BAE9B,QAAQ,IAAI,uBAAuB",
         "sources": [
           "../../after-preload-dynamic.js",
         ],