How to find/debug what file(s) included given file during typescript compilation

Akxe commented 5 years ago

Search Terms

find why was file included during typescript build

Suggestion

Be able to find out why a file was checked by TS compiler during a build.

Use Cases

Sometimes testing files gets somehow mixed into the type checking for dev/prod builds.

Examples

If a flag explain-inclusion=FLFolder.mock.ts is present:

projects/folder-listing/src/app/services/FLEntities/FLFolder.mock.ts was included, because it was requested by:

projects/folder-listing/src/app/services/FLEntities/FLFolder.ts at (3:26)
projects/folder-listing/src/app/services/main.service.ts (7:10) ... (Only first level, the developer should repeat the process as needed)

Checklist

My suggestion meets these guidelines:

[x] This wouldn't be a breaking change in existing TypeScript/JavaScript code
[x] This wouldn't change the runtime behavior of existing JavaScript code
[x] This could be implemented without emitting different JS based on the types of the expressions
[x] This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
[x] This feature would agree with the rest of TypeScript's Design Goals.

orta commented 5 years ago

Have you seen the module tracing options? I think that might do what you're looking for

RyanCavanaugh commented 5 years ago

We need something like this, but for file inclusion more broadly, not just module resolution. This would probably help clear up some confusion around includes / excludes / typeRoots / types

Akxe commented 5 years ago

Well the request is actually because of misunderstanding of inclusion versus exclusion... https://stackoverflow.com/questions/56886718/how-to-find-debug-what-file-include-other-file-in-typescript-compilation

microsoft / TypeScript