tsc --build --clean leaves .js.map files

[simonbuchan]

TypeScript Version: 3.1.0-dev.20180822

Search Terms:
build clean sourcemap source maps .map

Expected behavior:

tsc --build src --clean should remove all files generated by tsc --build src.

Actual behavior:

It removes .js, .d.ts, and .d.ts.map files, but not .js.map.

Due to #25864 I'm building without outDir or rootDir, e.g. the output files are created beside the source files, if that matters.

My project structure is as described in the handbook for project references:

src/tsconfig.json // references: [a, b], files: []
src/tsconfig.base.json // composite: true, etc...
src/common/tsconfig.json // extends: ../tsconfig.base.json
src/common/some-common.ts ...
src/a/tsconfig.json // extends: ../tsconfig.base.json, references: [common]
src/a/some-a.ts ...
src/b/tsconfig.json // extends: ../tsconfig.base.json, references: [common]
src/a/some-b.ts ...

[zkhalapyan]

Seems like this bug is bag, again running tsc --build --clean leaves all files intact!

❯ ./node_modules/.bin/tsc --version
Version 3.9.7
❯ node --version
v15.2.0

[RyanCavanaugh]

@zkhalapyan please open a new issue with steps to reproduce the problem