refactor(@angular/build): unify configuration loading and option transformations in TypeScriptCompilation - #34007
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…sformations in TypeScriptCompilation Both AotCompilation and JitCompilation previously executed identical logic during initialization to read tsconfig.json using readConfiguration and immediately pass the options to transformCompilerOptions. The loadConfiguration method on TypeScriptCompilation now accepts optional compilerOptionOverrides and applies transformCompilerOptions directly. This unifies configuration reading and option transformations into a single cohesive step, eliminates duplicate setup boilerplate across AotCompilation and JitCompilation, and reduces unnecessary direct imports of transformCompilerOptions.
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This pull request refactors the TypeScript compilation process by centralizing the compiler option transformation logic inside the base TypeScriptCompilation class's loadConfiguration method. This simplifies the AotCompilation and JitCompilation subclasses, which previously handled this transformation separately. Additionally, a new unit test has been added to verify that configuration loading and compiler option transformations function correctly. I have no feedback to provide as the changes are clean and well-tested.
alan-agius4
approved these changes
Sep 3, 2026
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Both
AotCompilationandJitCompilationpreviously executed identical logic during initialization to readtsconfig.jsonusingreadConfigurationand immediately pass the options totransformCompilerOptions.The loadConfiguration method on
TypeScriptCompilationnow accepts optionalcompilerOptionOverridesand appliestransformCompilerOptionsdirectly. This unifies configuration reading and option transformations into a single cohesive step, eliminates duplicate setup boilerplate acrossAotCompilationandJitCompilation, and reduces unnecessary direct imports oftransformCompilerOptions.