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perf(@angular/build): enable TypeScript incremental build cache in library builder - #34316
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alan-agius4 merged 1 commit intoOct 15, 2026
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This pull request enables persistent caching for the library builder by extracting cacheOptions and passing cachePath to the compilation options when caching is enabled. It also adds an integration test to verify that .tsbuildinfo is correctly written and reused. The review feedback recommends using optional chaining when accessing cacheOptions to prevent potential runtime TypeErrors if cacheOptions is undefined.
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…brary builder Pass the normalized `cacheOptions.path` to `compilationInstance.initialize` when persistent disk caching is enabled so TypeScript writes and reuses `.tsbuildinfo` across builds.
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Pass the normalized
cacheOptions.pathtocompilationInstance.initializewhen persistent disk caching is enabled so TypeScript writes and reuses.tsbuildinfoacross builds.