No "exports" main resolved in @babel/helper-compilation-targets/package.json

@JLHwung

Bug Report

Current Behavior
Since an update to node 13.10.1 I have a problem while building an application with babel-loader:

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: No "exports" main resolved in node_modules/@babel/helper-compilation-targets/package.json

Expected behavior/code
It should build correctly

Babel Configuration (babel.config.js, .babelrc, package.json#babel, cli command, .eslintrc)

Filename: babel.config.js

const baseConfig = {
  presets: [
    [
      '@babel/preset-env',
      {
        useBuiltIns: 'entry',
        corejs: 3,
      },
    ],
    '@babel/preset-react',
    '@babel/preset-flow',
    '@babel/preset-typescript',
  ],
  plugins: [
    'react-hot-loader/babel',
    'babel-plugin-styled-components',
    ['@babel/plugin-proposal-class-properties', { loose: true }],
    '@babel/plugin-syntax-dynamic-import',
    isTesting && 'babel-plugin-dynamic-import-node-babel-7',
  ].filter(Boolean),
};

module.exports = {
  sourceType: 'unambiguous',
  ...baseConfig,
  plugins: [
    'idx',
    '@babel/plugin-syntax-import-meta',
    '@babel/plugin-proposal-json-strings',
    [
      '@babel/plugin-proposal-decorators',
      {
        legacy: true,
      },
    ],
    '@babel/plugin-proposal-function-sent',
    '@babel/plugin-proposal-export-namespace-from',
    '@babel/plugin-proposal-numeric-separator',
    '@babel/plugin-proposal-optional-chaining',
    '@babel/plugin-proposal-throw-expressions',
    'babel-plugin-macros',
    [
      require.resolve('babel-plugin-module-resolver'),
      {
        root: ['./'],
        alias: {
          'react-router-dom': './packages/components/Router',
          '@@react-router-dom': './node_modules/react-router-dom',
        },
      },
    ],
  ],
  env: {
    test: {
      plugins: [
        ...baseConfig.plugins,
        '@babel/plugin-transform-modules-commonjs',
      ],
    },
  },
};

Environment

  System:
    OS: macOS Mojave 10.14.6
  Binaries:
    Node: 13.10.1 - /usr/local/bin/node
    Yarn: 1.22.0 - /usr/local/bin/yarn
    npm: 6.14.2 - /usr/local/bin/npm
  Monorepos:
    Yarn Workspaces: 1.22.0
  npmPackages:
    @babel/core: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-class-properties: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-decorators: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-export-namespace-from: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-function-sent: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-json-strings: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-numeric-separator: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-optional-chaining: ^7.8.3 => 7.8.3
    @babel/plugin-proposal-throw-expressions: ^7.8.3 => 7.8.3
    @babel/plugin-syntax-dynamic-import: ^7.8.3 => 7.8.3
    @babel/plugin-syntax-import-meta: ^7.8.3 => 7.8.3
    @babel/preset-env: ^7.8.3 => 7.8.3
    @babel/preset-flow: ^7.8.3 => 7.8.3
    @babel/preset-react: ^7.8.3 => 7.8.3
    @babel/preset-typescript: ^7.8.3 => 7.8.3
    babel-eslint: ^10.0.3 => 10.0.3
    babel-loader: ^8.0.6 => 8.0.6
    babel-plugin-idx: ^2.4.0 => 2.4.0
    babel-plugin-lodash: ^3.3.4 => 3.3.4
    babel-plugin-macros: ^2.8.0 => 2.8.0
    babel-plugin-module-resolver: ^4.0.0 => 4.0.0
    babel-plugin-styled-components: ^1.10.7 => 1.10.7
    eslint: ^6.8.0 => 6.8.0
    jest: ^25.1.0 => 25.1.0
    webpack: ^4.41.5 => 4.41.5

Possible Solution
snowpack resolved the error like this. Maybe this could work here too.

Edits by @JLHwung

Solution

If you hit this issue from search engines, please update all @babel deps to v7.8.7 or above.

@Drogglbecher

Hey @Drogglbecher! We really appreciate you taking the time to report an issue. The collaborators on this project attempt to help as many people as possible, but we're a limited number of volunteers, so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack community that typically always has someone willing to help. You can sign-up here for an invite."

I can not reproduce this error on my local environments (macOS + Node.js 13.10.1). However I do notice that if package.json/exports/ is changed to something like

"exports": {
    "foo": "./lib/index.js"
  },

It will throw exactly the same error as you posted. Can you check if the node_modules/@babel/helper-compilation-targets/package.json is same as https://unpkg.com/browse/@babel/helper-compilation-targets@7.8.7/package.json ?

Ah, ok, in version 7.8.3 of babel we have

{
  "name": "@babel/helper-compilation-targets",
  "version": "7.8.3",
  "author": "The Babel Team (https://babeljs.io/team)",
  "license": "MIT",
  "description": "Engine compat data used in @babel/preset-env",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-compilation-targets",
  "main": "lib/index.js",
  "exports": false,
  "publishConfig": {
    "access": "public"
  },
  "keywords": [
    "babel",
    "babel-plugin"
  ],
  "dependencies": {
    "@babel/compat-data": "^7.8.1",
    "browserslist": "^4.8.2",
    "invariant": "^2.2.4",
    "levenary": "^1.1.0",
    "semver": "^5.5.0"
  },
  "peerDependencies": {
    "@babel/core": "^7.0.0"
  },
  "devDependencies": {
    "@babel/core": "^7.8.3",
    "@babel/helper-plugin-test-runner": "^7.8.3"
  },
  "gitHead": "a7620bd266ae1345975767bbc7abf09034437017"
}

The exports: false could be the thing here.

Yeah, we fixed it in 7.8.4. Although, exports: false should work starting with Node 13.2 🤔 (The fix was for Node 13.1-13.2)

Let the issue stay open for a while as people upgrading to latest node with babel 7.8.3 will be constantly bothered by this issue. I have also filed an issue on node.js: nodejs/node#32107

I'm getting the same error after updating to node v13.10.1 so I switched back to node LTS v12.16.1 and the error gone. I hope this issue fixed soon.

I fixed this issue by removing the node_modules directory and package-lock.json file then run npm install to fresh install all packages then the issue was fixed.

module: bring back support for exports: false

I had this issue when trying to run gatsby develop. I tried doing some of the things listed above but nothing worked.

What is your @babel/helper-compilation-targets version?

It is 7.8.3

I just have upgraded @babel/ packages, removed node_modules and reinstalled its. After everything is ok.

NodeJS: v12.19.0

[xx] Bumped babel versions based on babel/babel#11216

I fixed this issue by removing the node_modules directory and package-lock.json file then run npm install to fresh install all packages then the issue was fixed.

This worked for me

Fix @babel/helper-compilation-targets bug

Update babel packages to fix build, see babel/babel#11216

(!! NF rm) Remove CommonJS support entirely

chore(test): update babel from 7.8.3 to 7.8.7

chore(test): update babel from 7.8.3 to 7.9.6

chore(test): update babel from 7.8.3 to 7.9.6 (#4644)

chore(buble): upgrade buble, resolves babel/babel#11216 (#288)

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No "exports" main resolved in @babel/helper-compilation-targets/package.json #11216

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No "exports" main resolved in @babel/helper-compilation-targets/package.json #11216

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babel-bot commented on Mar 5, 2020

JLHwung commented on Mar 5, 2020

Drogglbecher commented on Mar 5, 2020

nicolo-ribaudo commented on Mar 5, 2020

JLHwung commented on Mar 5, 2020

BassemN commented on Mar 5, 2020

BassemN commented on Mar 5, 2020

mluce194 commented on Mar 10, 2020

nicolo-ribaudo commented on Mar 10, 2020

mluce194 commented on Mar 10, 2020

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