perf: cache module size in NormalModule #9719
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sokra
approved these changes
Sep 23, 2019
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As documented in #9718, the size function in NormalModule is a critical path with slows down watch mode recompilation. By caching the module size, this performance hit in watch mode can be avoided for modules that have not changed.
What kind of change does this PR introduce?
Refactor to improve performance
Did you add tests for your changes?
No
Does this PR introduce a breaking change?
No
What needs to be documented once your changes are merged?
Nothing
Profile
As expected, this shaved about 2s off my incremental compile time (from ~6.5s to ~4.5s)
Before:
After: