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Allow --noEmit to override incremental: true from tsconfig.json #38440
Description
Search Terms
noEmit incremental override type-check
Suggestion
If --noEmit is specified on the command line, ignore the incremental: true setting from tsconfig.json.
Use Cases
I want to have a type-check npm script that runs tsc --noEmit, only for type checking. Whether incremental was set to true in tsconfig.json, shouldn't prevent that, because this isn't a build.
Examples
Currently, this leads to
Option 'noEmit' cannot be specified with option 'incremental'
Checklist
My suggestion meets these guidelines:
- This wouldn't be a breaking change in existing TypeScript/JavaScript code
- This wouldn't change the runtime behavior of existing JavaScript code
- This could be implemented without emitting different JS based on the types of the expressions
- This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
- This feature would agree with the rest of TypeScript's Design Goals.
Reacted by Grigory Streltsov
Reacted by Grigory Streltsov
Activity
RyanCavanaugh commentedon Jun 5, 2020
Sheetal Nandi (@sheetalkamat) thoughts?
sheetalkamat commentedon Jun 5, 2020
While working on #38853 i did consider this and i think it would be ok to write tsbuildInfo file when --noEmit is specified. But we should handle difference between running
tsc --noEmitandtscwhere tsbuild info file remains same, and hence had decided to file separate PR for this.Allow noEmit with incremental and composite
Allow noEmit with incremental and composite
Allows emitting buildInfo when --noEmit is specified (#39122)