Add new `sourceRootDir` setting

TypeScript Version: 3.5.1

Search Terms: sourceRoot, sources, sourcemap

Code

1. Create a module like: src/nested/foo.ts

2. Use the following tsconfig.json with tsc:

{
  "include": ["src"],
  "compilerOptions": {
    "baseUrl": ".",
    "outDir": "dist",
    "sourceMap": true,
    "sourceRoot": "src"
  }
}

Expected behavior:

Inside nested/foo.js.map, the sourceRoot should be ../src/ instead of src/. Otherwise, the paths in the sources array cannot be found.

Actual behavior:

The sourceRoot is src/ regardless of nesting.

Playground Link: N/A

Related Issues: None

[RyanCavanaugh]

This one’s been around a long while and we haven’t yet seen the quantity of feedback that would justify further complicating the file resolution process.

[mistic]

@raijinsetsu we don’t have that level of control on Bazel and honestly I dont want to create a new symlink for each package target folder. Developing on windows is already slower and symlinks/junctions there are always painful. What we really need is that sourceRoot behaves like rootDir and calculates the nested relative paths correctly accordingly the value passed on the setting. In alternative a new sourceRootDir param will also work okay! 😃