Import suggestions for referenced project include files in `outDir`

[OliverJAsh]

TypeScript Version: 4.0.3

Search Terms: auto imports

Code

Reduced test case: https://github.com/OliverJAsh/ts-project-references-playground/tree/imports-bug. Below I have inlined the code from this repository.

shared/tsconfig.json:

{
  "compilerOptions": {
    "composite": true,
    "outDir": "../target-tsc-build/",
    "rootDir": ".."
  },
  "files": ["./main.ts"]
}

shared/main.ts:

export const shared = 1;

webpack/tsconfig.json:

{
  "compilerOptions": {
    "outDir": "../target-tsc-build/",
    "rootDir": "..",
    "baseUrl": "./",
    "paths": {
      "shared/*": ["../shared/*"]
    }
  },
  "files": ["a.ts", "b.ts"],
  "references": [
    {
      "path": "../shared/tsconfig.json"
    }
  ]
}

webpack/a.ts:

import { shared } from "shared/main";

console.log(shared);

webpack/b.ts:

console.log(shared);

Expected behavior:

When I open webpack/b.ts

• TypeScript should suggest importing symbol shared from shared/main. There should be no other suggestions.
• Activating auto import should result in:

  import { shared } from "shared/index";
  
  console.log(shared);

Actual behavior:

• TypeScript suggests importing symbol shared from ../target-tsc-build/shared/main (the file in outDir) and then shared/main.
  
• Activating auto import results in:

  import { shared } from "../target-tsc-build/shared/main";
  
  console.log(shared);

  The outDir file is the primary suggestion, therefore it is used for auto import:
  

Import suggestions should never be provided for compiled files—only source files.

Note I also tried adding exclude: ["./target-tsc-build/"] and "declarationMaps": true to all configs, but that didn't seem to help.

Playground Link:

Related Issues:

[andrewbranch]

Looks like a duplicate of #38856; have you tried the nightly?

[OliverJAsh]

Yes that seems to fix it ❤️ Closing this as a duplicate.