Typescript build with project references fails with `Output file has not been built from source file` even though it was built

Question

I'm trying to build a project that references a shared project alongside it. My configs look like:

projectA/tsconfig.json:

{
  "compilerOptions": {
    "module": "commonjs",
    "noImplicitReturns": true,
    "lib": [
      "esnext.asynciterable"
    ],
    "noUnusedLocals": true,
    "outDir": "lib",
    "sourceMap": true,
    "strict": true,
    "target": "es2017"
  },
  "compileOnSave": true,
  "include": [
    "src"
  ],
  "references": [
    {
      "path": "../shared",
      "prepend": true
    }
  ]
}

shared/tsconfig.json:

{
  "compilerOptions": {
    "outFile": "build/out.js",
    "composite": true,
    "target": "es5",
    "module": "amd",
    "declaration": true,
    "strict": true,
    "moduleResolution": "node",
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": [
    "src"
  ]
}

running ts -b from inside projectA yields:

src/index.ts:6:24 - error TS6305: Output file '.../shared/build/out.d.ts' has not been built from source file '.../shared/src/index.ts'.

6 import DummyClass from '../../shared/src';

Even though this file is indeed created.

What am I doing wrong?

@james I too am running into this. I don't have a full solution, but it appears circular references may be involved. See here for a start (the page I was on before my search led to here) — acat
– acat, Commented Mar 27, 2022 at 2:25
I've actually changed my approach here if this helps anyway. I do have a shared library project to a similar setup, but as a far of my ProjectA I've added a build.sh. I adjusted my package.json to include a "build" script that executes build.sh. Build.sh then copies my needed libraries into project A and runs a webpack with a tsloader so i'm actually pulling these into the project locally. Probably not the greatest but it got me moving. — james
– james, Commented Mar 27, 2022 at 16:21

Filip Sakel · Accepted Answer · 2022-07-17 03:04:59Z

10

For me, the solution was to run npx tsc -b on the referenced-project directory, which requires npx to tell the typescript compiler (tsc) to build (-b). You can probably add this step to your compilation pipeline.

Perhaps an easier method is to tell typescript to do that itself by running tsc -b in the npm build script of your main project (you can learn more here).

edited Jul 17, 2022 at 3:04

answered Jul 17, 2022 at 2:50

Filip Sakel

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2 Comments

hokwanhung Over a year ago

This is such a save. Great thanks!

Fre Timmerman Oct 20 at 9:16

can you clarify "running tsc -b in the npm build script of your main project" ??

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