feat(typescript-estree): add flag EXPERIMENTAL_useSourceOfProjectReferenceRedirect #2669
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…renceRedirect See #2094 This is quick-and-dirty to get this out there for some users to see what sort of perf improvements this squeezes out. With the flag turned on: ``` bradzacher@bradzacher-mbp typescript-eslint % DEBUG=typescript-eslint:* yarn eslint ./packages/types/src/index.ts ./packages/eslint-plugin/src/index.ts yarn run v1.22.4 $ /Users/bradzacher/github/typescript-eslint/node_modules/.bin/eslint ./packages/types/src/index.ts ./packages/eslint-plugin/src/index.ts typescript-eslint:typescript-estree:parser parserOptions.project (excluding ignored) matched projects: [ './tsconfig.eslint.json', './tests/integration/utils/jsconfig.json', './packages/eslint-plugin/tsconfig.json', './packages/eslint-plugin-internal/tsconfig.json', './packages/eslint-plugin-tslint/tsconfig.json', './packages/experimental-utils/tsconfig.json', './packages/parser/tsconfig.json', './packages/scope-manager/tsconfig.json', './packages/shared-fixtures/tsconfig.json', './packages/types/tsconfig.json', './packages/typescript-estree/tsconfig.json', './packages/visitor-keys/tsconfig.json' ] +0ms typescript-eslint:typescript-estree:createProjectProgram Creating project program for: /Users/bradzacher/github/typescript-eslint/packages/types/src/index.ts +0ms typescript-eslint:typescript-estree:createWatchProgram File did not belong to any existing programs, moving to create/update. /users/bradzacher/github/typescript-eslint/packages/types/src/index.ts +0ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/tsconfig.eslint.json. +0ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/tests/integration/utils/jsconfig.json. +1s typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/eslint-plugin/tsconfig.json. +844ms typescript-eslint:typescript-estree:createWatchProgram Found program for file. /users/bradzacher/github/typescript-eslint/packages/types/src/index.ts +2s typescript-eslint:parser:parser Resolved libs from program: [ 'es2017' ] +0ms typescript-eslint:typescript-estree:parser parserOptions.project (excluding ignored) matched projects: [ './tsconfig.eslint.json', './tests/integration/utils/jsconfig.json', './packages/eslint-plugin/tsconfig.json', './packages/eslint-plugin-internal/tsconfig.json', './packages/eslint-plugin-tslint/tsconfig.json', './packages/experimental-utils/tsconfig.json', './packages/parser/tsconfig.json', './packages/scope-manager/tsconfig.json', './packages/shared-fixtures/tsconfig.json', './packages/types/tsconfig.json', './packages/typescript-estree/tsconfig.json', './packages/visitor-keys/tsconfig.json' ] +5s typescript-eslint:typescript-estree:createProjectProgram Creating project program for: /Users/bradzacher/github/typescript-eslint/packages/eslint-plugin/src/index.ts +5s typescript-eslint:typescript-estree:createWatchProgram Found existing program for file. /users/bradzacher/github/typescript-eslint/packages/eslint-plugin/src/index.ts +74ms typescript-eslint:parser:parser Resolved libs from program: [ 'es2017' ] +70ms ✨ Done in 6.50s. ``` With the flag turned off: ``` bradzacher@bradzacher-mbp typescript-eslint % DEBUG=typescript-eslint:* yarn eslint ./packages/types/src/index.ts ./packages/eslint-plugin/src/index.ts yarn run v1.22.4 $ /Users/bradzacher/github/typescript-eslint/node_modules/.bin/eslint ./packages/types/src/index.ts ./packages/eslint-plugin/src/index.ts typescript-eslint:typescript-estree:parser parserOptions.project (excluding ignored) matched projects: [ './tsconfig.eslint.json', './tests/integration/utils/jsconfig.json', './packages/eslint-plugin/tsconfig.json', './packages/eslint-plugin-internal/tsconfig.json', './packages/eslint-plugin-tslint/tsconfig.json', './packages/experimental-utils/tsconfig.json', './packages/parser/tsconfig.json', './packages/scope-manager/tsconfig.json', './packages/shared-fixtures/tsconfig.json', './packages/types/tsconfig.json', './packages/typescript-estree/tsconfig.json', './packages/visitor-keys/tsconfig.json' ] +0ms typescript-eslint:typescript-estree:createProjectProgram Creating project program for: /Users/bradzacher/github/typescript-eslint/packages/types/src/index.ts +0ms typescript-eslint:typescript-estree:createWatchProgram File did not belong to any existing programs, moving to create/update. /users/bradzacher/github/typescript-eslint/packages/types/src/index.ts +0ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/tsconfig.eslint.json. +1ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/tests/integration/utils/jsconfig.json. +1s typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/eslint-plugin/tsconfig.json. +976ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/eslint-plugin-internal/tsconfig.json. +2s typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/eslint-plugin-tslint/tsconfig.json. +1s typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/experimental-utils/tsconfig.json. +1s typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/parser/tsconfig.json. +961ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/scope-manager/tsconfig.json. +888ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/shared-fixtures/tsconfig.json. +996ms typescript-eslint:typescript-estree:createWatchProgram Creating watch program for /users/bradzacher/github/typescript-eslint/packages/types/tsconfig.json. +561ms typescript-eslint:typescript-estree:createWatchProgram Found program for file. /users/bradzacher/github/typescript-eslint/packages/types/src/index.ts +567ms typescript-eslint:parser:parser Resolved libs from program: [ 'es2017' ] +0ms typescript-eslint:typescript-estree:parser parserOptions.project (excluding ignored) matched projects: [ './tsconfig.eslint.json', './tests/integration/utils/jsconfig.json', './packages/eslint-plugin/tsconfig.json', './packages/eslint-plugin-internal/tsconfig.json', './packages/eslint-plugin-tslint/tsconfig.json', './packages/experimental-utils/tsconfig.json', './packages/parser/tsconfig.json', './packages/scope-manager/tsconfig.json', './packages/shared-fixtures/tsconfig.json', './packages/types/tsconfig.json', './packages/typescript-estree/tsconfig.json', './packages/visitor-keys/tsconfig.json' ] +11s typescript-eslint:typescript-estree:createProjectProgram Creating project program for: /Users/bradzacher/github/typescript-eslint/packages/eslint-plugin/src/index.ts +11s typescript-eslint:typescript-estree:createWatchProgram Found existing program for file. /users/bradzacher/github/typescript-eslint/packages/eslint-plugin/src/index.ts +64ms typescript-eslint:parser:parser Resolved libs from program: [ 'es2017' ] +60ms ✨ Done in 12.26s. ```
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Codecov Report
@@ Coverage Diff @@
## master #2669 +/- ##
==========================================
- Coverage 92.83% 92.78% -0.05%
==========================================
Files 294 294
Lines 9666 9676 +10
Branches 2711 2713 +2
==========================================
+ Hits 8973 8978 +5
- Misses 327 330 +3
- Partials 366 368 +2
Flags with carried forward coverage won't be shown. Click here to find out more.
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See #2094
This is quick-and-dirty to get this out there for some users to see what sort of perf improvements this squeezes out.
Intentionally not documenting the flag as it isn't ready to be used by the wider world
With the flag turned on
With the flag turned off
Comparisons:
With the flag turned on, runtime is ~6s.
With the flag turned off, runtime is ~12s.
With the flag turned on, we're able to find
./packages/types/src/index.tswithin theeslint-pluginprogram and exit early.With the flag turned off, we have to iterate and calculate almost all of the programs to find the program for
typescript-estree(because our config is alphabetically sorted).Important note that I just found out -
projectsare not carried through tsconfigextends!To test this I had to duplicate the project references config between from the build tsconfigs into the dev tsconfigs.
Kind of annoying but w/e 🤷♂️