For a Node 20 application with Typescript, I’m switching to ESM.
Since, I’m importing ts files, I’ve made a change in my Typescript config file:

{
  "compilerOptions": {
    "target": "ES2020",
    "module": "esnext",
    "moduleResolution": "node",
    "typeRoots": ["./src/types"],
    "allowImportingTsExtensions": true,      // Changed this one.
    "resolveJsonModule": true,
    "outDir": "./dist/",
    "noEmit": true,                          // Changed this one too.
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "strict": true,
    "noImplicitAny": false,
    "skipLibCheck": true
  }
}

My build script is simple: tsc.

Locally, both start and build scripts work. But my docker pipeline fails. The docker pipeline includes COPY --from=builder ./app/dist . but because of noEmit the dist folder is never created. But if I set noEmit and allowImportingTsExtensions to false, it fails with the error: “An import path can only end with a ‘.ts’ extension when ‘allowImportingTsExtensions’ is enabled.”.

How am I supposed to make ESM work with Typescript?