Assume to have simple typescript program having two files:
src/hello.js
export default function hello() {
return 'Hello world'
}
src/say.js
import hello from './hello.js'
console.log(hello())
with the following tsconfig.json
{
"compilerOptions": {
"lib": ["es2023"],
"module": "node16",
"target": "es2022",
"strict": true,
"esModuleInterop": true,
"skipLibCheck": true,
"forceConsistentCasingInFileNames": true,
"moduleResolution": "node16",
"allowSyntheticDefaultImports": true,
"outDir": "dist",
},
"include": ["src/**/*"]
}
and CommonJS type set in package.json
{
"type": "commonjs"
}
The problem is with ts-node
failing with the following error:
$ npx ts-node src/say.ts
Error: Cannot find module './hello.js'
Require stack:
- /Users/pawel/wrk/github/ts-sandbox/src/say.ts
at Function.Module._resolveFilename (node:internal/modules/cjs/loader:1144:15)
at Function.Module._resolveFilename.sharedData.moduleResolveFilenameHook.installedValue [as _resolveFilename] (/Users/pawel/wrk/github/ts-sandbox/node_modules/@cspotcode/source-map-support/source-map-support.js:811:30)
at Function.Module._load (node:internal/modules/cjs/loader:985:27)
at Module.require (node:internal/modules/cjs/loader:1235:19)
at require (node:internal/modules/helpers:176:18)
at Object.<anonymous> (/Users/pawel/wrk/github/ts-sandbox/src/say.ts:1:1)
at Module._compile (node:internal/modules/cjs/loader:1376:14)
at Module.m._compile (/Users/pawel/wrk/github/ts-sandbox/node_modules/ts-node/src/index.ts:1618:23)
at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
at Object.require.extensions.<computed> [as .ts] (/Users/pawel/wrk/github/ts-sandbox/node_modules/ts-node/src/index.ts:1621:12) {
code: 'MODULE_NOT_FOUND',
requireStack: [ '/Users/pawel/wrk/github/ts-sandbox/src/say.ts' ]
}
This project works well when transpiled with tsc
and simply run node dist/say.js
. Also ts-node
alternatives (tsx src/say.ts
, tsimp src/say.ts
) work without issues.
Please find complete source code here.
What I'm missing with ts-node
please?
Just try removing the .js
extension from the import line:
src/say.js
import hello from './hello.js' // <<< HERE
console.log(hello())