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In order to speed up bazel build performance delete all rxjs d.ts files that reference rxjs-compat. For all ts_library and ng_module rules Bazel generates tsconfig.json file that explicitly lists all d.ts files found in required npm package. In case of rxjs, this means that tsconfig contains all d.ts files that reference rxjs-compat package, which is an interop/backwards compatibility package not installed in angular/angular repo. But because tsconfig contains these d.ts files, tsc will try to resolve them and silently fail. All these lookups are quite expensive and not cached. This causes significant slowdown of the build under bazel. This change removes all of these problematic rxjs d.ts files via an npm postinstall hook. This is not ideal because it solves the problem only for our repo, but it's a good start. Build perf improvements per target: //packages/core/src/reflect:reflect 5sec => 3 sec //packages/core:core 17sec => 12 sec //packages/router:router 30sec => 8 sec PR Close #33786 |
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Angular
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages.
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