perf(@angular-devkit/build-angular): avoid extra TypeScript emits with esbuild rebuilds #24114
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…h esbuild rebuilds To further improve incremental rebuild performance of the experimental esbuild-based browser application builder, the output of the TypeScript file loader within the Angular compiler plugin are now cached in memory by the input file name and invalidated via the file watching events. This allows an additional TypeScript emit including the associated transformations per input file to be avoided if the file has not changed or has not been affected by other files within the TypeScript program.
… for esbuild perf debug output When the `NG_BUILD_DEBUG_PERF` environment variable is used to debug performance of the experimental esbuild-based browser application builder, additional information will be logged for cumulative profiling actions. This includes the count, minimum, maximum, and average.
alan-agius4
approved these changes
Oct 24, 2022
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To further improve incremental rebuild performance of the experimental esbuild-based browser
application builder, the output of the TypeScript file loader within the Angular compiler plugin
are now cached in memory by the input file name and invalidated via the file watching events.
This allows an additional TypeScript emit including the associated transformations per input file
to be avoided if the file has not changed or has not been affected by other files within the
TypeScript program.