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Commitd2bd7f6

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refactor(@angular/build): remove advanced chunking option in experimental chunk optimizer
Removes the experimental `advancedChunks` configuration from the Rolldown-based chunk optimizer. This experimental feature is being temporarily removed to allow for further refinement and testing of the chunking strategy.A new E2E test (`chunk-optimizer-lazy`) has been added to validate the default chunking behavior with multiple lazy-loaded routes, ensuring that the optimizer still produces a reasonable number of output files without the advanced configuration.
1 parent50072cd commitd2bd7f6

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3 files changed

+53
-1
lines changed

3 files changed

+53
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‎packages/angular/build/src/builders/application/chunk-optimizer.ts‎

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@@ -253,7 +253,6 @@ export async function optimizeChunks(
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constresult=awaitbundle.generate({
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minify:{mangle:false,compress:false},
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advancedChunks:{minSize:8192},
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sourcemap,
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chunkFileNames:(chunkInfo)=>`${chunkInfo.name.replace(/-[a-zA-Z0-9]{8}$/,'')}-[hash].js`,
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});

‎tests/legacy-cli/e2e.bzl‎

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@@ -56,6 +56,7 @@ WEBPACK_IGNORE_TESTS = [
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"tests/build/auto-csp*",
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"tests/build/incremental-watch.js",
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"tests/build/chunk-optimizer.js",
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"tests/build/chunk-optimizer-lazy.js",
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]
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def_to_glob(patterns):
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@@ -0,0 +1,52 @@
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importassertfrom'node:assert/strict';
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import{readdir}from'node:fs/promises';
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import{replaceInFile}from'../../utils/fs';
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import{execWithEnv,ng}from'../../utils/process';
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exportdefaultasyncfunction(){
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// Add lazy routes.
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awaitng('generate','component','lazy-a');
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awaitng('generate','component','lazy-b');
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awaitng('generate','component','lazy-c');
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awaitreplaceInFile(
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'src/app/app.routes.ts',
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'routes: Routes = [];',
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`routes: Routes = [
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{
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path: 'lazy-a',
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loadComponent: () => import('./lazy-a/lazy-a').then(m => m.LazyA),
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},
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{
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path: 'lazy-b',
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loadComponent: () => import('./lazy-b/lazy-b').then(m => m.LazyB),
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},
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{
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path: 'lazy-c',
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loadComponent: () => import('./lazy-c/lazy-c').then(m => m.LazyC),
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},
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];`,
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);
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// Build without chunk optimization
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awaitng('build','--output-hashing=none');
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constunoptimizedFiles=awaitreaddir('dist/test-project/browser');
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constunoptimizedJsFiles=unoptimizedFiles.filter((f)=>f.endsWith('.js'));
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// Build with chunk optimization
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awaitexecWithEnv('ng',['build','--output-hashing=none'],{
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...process.env,
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NG_BUILD_OPTIMIZE_CHUNKS:'1',
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});
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constoptimizedFiles=awaitreaddir('dist/test-project/browser');
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constoptimizedJsFiles=optimizedFiles.filter((f)=>f.endsWith('.js'));
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// Check that the number of chunks is reduced but not all combined
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assert.ok(
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optimizedJsFiles.length<unoptimizedJsFiles.length,
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`Expected chunk count to be less than${unoptimizedJsFiles.length}, but was${optimizedJsFiles.length}.`,
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);
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assert.ok(
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optimizedJsFiles.length>1,
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`Expected more than one chunk, but found${optimizedJsFiles.length}.`,
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);
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}

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