Directory import error on compiled output

[stelescuraul]

Describe the bug

Hi everyone,

I have created a small reproducible example of the error which you can find here.

Using path aliases in tsconfig and swcrc, the index.js filename is stripped from the end of the import path when using ESM modules.

> npx swc -d ./dist -D --delete-dir-on-start --only="**/*.js,**/*.ts,**/*.cjs,**/*.mjs" --ignore ./node_modules,./dist .
> node dist/projects/api/main.js

Error [ERR_UNSUPPORTED_DIR_IMPORT]: Directory import 'workspaces/dist/libs/math' is not supported resolving ES modules imported from workspaces/dist/projects/api/main.js

The output of in the dist/projects/api/main.js looks like this:

import { sum } from "../../libs/math"; <<-- should be /math/index.js

Renaming the file "index.js" to anything else resolves the issue and the path is added correctly. EG renaming it to main.js:

import { sum } from "../../libs/math/main.js"; <<-- main.js is correctly appended

This issue seems to have been introduced in 1.3.106. last version that worked with this setup was 1.3.105

Input code

// projects/api/main.ts

import { sum } from "@foo/math";

console.log(sum(1, 2));

Config

{
  "$schema": "https://json.schemastore.org/swcrc",
  "isModule": true,
  "jsc": {
    "target": "es2022",
    "keepClassNames": true,
    "loose": false,
    "baseUrl": ".",
    "paths": {
      "@foo/math": ["libs/math/index.js"],
      "@foo/math/*": ["libs/math/*"],
      "@foo/common": ["libs/common/main.js"]
    },
    "parser": {
      "syntax": "typescript"
    }
  },
  "minify": false,
  "module": {
    "type": "es6",
    "resolveFully": true
  }
}

Playground link (or link to the minimal reproduction)

https://github.com/stelescuraul/dep-cruiser-issue

SWC Info output

No response

Expected behavior

Correctly append /index.js for path aliases.

Actual behavior

No response

Version

1.3.105

Additional context

No response

[kdy1]

I can't run npm ci from the repository you provided.

npm ERR! code E403
npm ERR! 403 403 Forbidden - GET https://artifactory.workday.com/artifactory/api/npm/npm-virtual/source-map/-/source-map-0.6.1.tgz
npm ERR! 403 In most cases, you or one of your dependencies are requesting
npm ERR! 403 a package version that is forbidden by your security policy, or
npm ERR! 403 on a server you do not have access to.

[stelescuraul]

@kdy1 I removed package lock, you should be able to run npm i instead.

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.