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fix(@angular-devkit/build-angular): experimental esbuild pipeline, add es2015 to main fields for RxJS v6 compatibility #25406

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merged 1 commit into from
Jun 20, 2023
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fix(@angular-devkit/build-angular): experimental esbuild pipeline, add es2015 to main fields for RxJS v6 compatibility #25406

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6 changes: 5 additions & 1 deletion packages/angular_devkit/build_angular/src/tools/esbuild/application-code-bundle.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,11 @@ export function createCodeBundleOptions(
assetNames: outputNames.media,
target,
supported: getFeatureSupport(target),
mainFields: ['es2020', 'browser', 'module', 'main'],
// Note: `es2015` is needed for RxJS v6. If not specified, `module` would
// match and the ES5 distribution would be bundled and ends up breaking at
// runtime with the RxJS testing library.
// More details: https://github.com/angular/angular-cli/issues/25405.
mainFields: ['es2020', 'es2015', 'browser', 'module', 'main'],
conditions: ['es2020', 'es2015', 'module'],
resolveExtensions: ['.ts', '.tsx', '.mjs', '.js'],
metafile: true,
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