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ESM file extension

See original GitHub issue

internal/modules/cjs/loader.js:1015
      throw new ERR_REQUIRE_ESM(filename, parentPath, packageJsonPath);
      ^

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: /path/to/proj/node_modules/quick-lru/index.js
require() of ES modules is not supported.
require() of /path/to/proj/node_modules/quick-lru/index.js from /path/to/proj/dist/src/ih-user/ih-user.guard.js is an ES module file as it is a .js file whose nearest parent package.json contains "type": "module" which defines all .js files in that package scope as ES modules.
Instead rename index.js to end in .cjs, change the requiring code to use import(), or remove "type": "module" from /path/to/proj/node_modules/quick-lru/package.json.

like this?

{
  "main": "index.cjs.js",
  "module": "index.esm.js"
}

Issue Analytics

State:
Created 3 years ago
Reactions:1
Comments:7 (2 by maintainers)

Top GitHub Comments

6reactions

Dilukacommented, Jan 19, 2021

I tried, and give up. There are some file extension naming issue with typescript in nodejs. It is not easy to change a nest.js project from commonjs to esm.

end up here:

internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/path/to/proj/dist/src/bootstrap.module' imported from /path/to/proj/dist/src/main.js
    at finalizeResolution (internal/modules/esm/resolve.js:271:11)
    at moduleResolve (internal/modules/esm/resolve.js:694:10)
    at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:784:11)
    at Loader.resolve (internal/modules/esm/loader.js:100:40)
    at Loader.getModuleJob (internal/modules/esm/loader.js:246:28)
    at ModuleWrap.<anonymous> (internal/modules/esm/module_job.js:47:40)
    at link (internal/modules/esm/module_job.js:46:36) {
  code: 'ERR_MODULE_NOT_FOUND'
}

3reactions

KODerFunkcommented, Apr 22, 2021

@sindresorhus Real problems with ts-node setup.

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