💻
How are you using Babel?
@rollup/plugin-babel
Input code
https://babel.dev/repl#?browsers=&build=&builtIns=false&corejs=false&spec=false&loose=false&code_lz=JYWwDg9gTgLgBAcwDYQEYEMkGc4DMoQhwBEyamWA9GRtgHQBWWEAdsXAO7AwAWcA3jACeYAKYAuEk1bEAvgCh5ogB6RYcACajc6AK5J4NCkA&debug=false&forceAllTransforms=false&modules=commonjs&shippedProposals=false&circleciRepo=&evaluate=true&fileSize=false&timeTravel=false&sourceType=unambiguous&lineWrap=true&presets=env%2Ctypescript&prettier=false&targets=Node-20.9&version=7.24.6&externalPlugins=%40babel%2Fplugin-proposal-json-modules%407.24.6&assumptions=%7B%7D
Configuration file name
No response
Configuration
{
"caller": {
"name": "packemon"
},
"comments": true,
"parserOpts": {
"sourceType": "unambiguous",
"strictMode": true
},
"plugins": [
"C:\\Repos\\HaloSPV3\\hce.shared-config\\node_modules\\@babel\\plugin-syntax-import-attributes\\lib\\index.js",
"@babel/plugin-proposal-json-modules"
],
"presets": [
[
"C:\\Repos\\HaloSPV3\\hce.shared-config\\node_modules\\@babel\\preset-typescript\\lib\\index.js",
{
"allowDeclareFields": true,
"onlyRemoveTypeImports": false,
"optimizeConstEnums": true
}
]
],
"configFile": false,
"babelrc": false
}This is incomplete. Packemon conditionally adds more plugins and presets (including @babel/preset-env) before passing the config to rollup. The SHOW_CONFIG_FOR environment variable had no effect.
Current and expected behavior
@babel/plugin-proposal-json-module may output some ESM code to CJS outputs, resulting in build errors.
- Top-level awaits in CommonJS
- import.meta in CommonJS
Fiddling with config values eventually caused the top-level await to be removed and the const was moved to the bottom of my imports group (as expected), but a import.meta.resolve(...) replace with undefined(...).
Environment
System:
OS: Windows 11 10.0.22621
Binaries:
Node: 22.2.0 - ~\scoop\apps\nodejs\current\node.EXE
Yarn: 1.22.22 - ~\scoop\apps\nodejs\current\bin\yarn.CMD
npm: 10.8.0 - ~\scoop\apps\nodejs\current\bin\npm.CMD
pnpm: 9.1.2 - ~\scoop\apps\nodejs\current\bin\pnpm.CMD
npmPackages:
@babel/cli: ^7.24.6 => 7.24.6
@babel/core: ^7.24.6 => 7.24.6
@babel/eslint-parser: ^7.24.6 => 7.24.6
@babel/helper-import-to-platform-api: ^7.24.6 => 7.24.6
@babel/plugin-proposal-json-modules: ^7.24.6 => 7.24.6
@babel/plugin-syntax-import-attributes: ^7.24.6 => 7.24.6
eslint: ^8.57.0 => 8.57.0
Additionally, packemon's dependencies (
"node_modules/packemon": {
"version": "4.1.1",
"resolved": "https://registry.npmjs.org/packemon/-/packemon-4.1.1.tgz",
"integrity": "sha512-HfT+CBM0LS+hMUS8ncvmtEz2G378AJuyBLnXWbJ0NxfkKXwKXEjHPVX64XoTDIhOupUYIiU5nH2LdOD1bi4ulw==",
"dev": true,
"license": "MIT",
"dependencies": {
"@babel/core": "^7.24.6",
"@babel/plugin-external-helpers": "^7.24.6",
"@babel/plugin-proposal-decorators": "^7.24.6",
"@babel/plugin-proposal-json-modules": "^7.24.6",
"@babel/plugin-syntax-import-attributes": "^7.24.6",
"@babel/plugin-transform-runtime": "^7.24.6",
"@babel/preset-env": "^7.24.6",
"@babel/preset-flow": "^7.24.6",
"@babel/preset-react": "^7.24.6",
"@babel/preset-typescript": "^7.24.6",
"@boost/cli": "^5.0.0",
"@boost/common": "^5.0.0",
"@boost/config": "^5.0.0",
"@boost/debug": "^5.0.0",
"@boost/event": "^5.0.0",
"@boost/pipeline": "^5.0.0",
"@boost/terminal": "^5.0.0",
"@rollup/plugin-babel": "^6.0.4",
"@rollup/plugin-commonjs": "^25.0.8",
"@rollup/plugin-json": "^6.1.0",
"@rollup/plugin-node-resolve": "^15.2.3",
"@swc/core": "^1.5.7",
"@swc/helpers": "^0.5.11",
"babel-plugin-cjs-esm-interop": "^4.0.2",
"babel-plugin-conditional-invariant": "^4.0.1",
"babel-plugin-env-constants": "^4.0.1",
"babel-preset-solid": "^1.8.17",
"browserslist": "^4.23.0",
"debug": "^4.3.4",
"execa": "^9.1.0",
"fast-glob": "^3.3.2",
"filesize": "^10.1.2",
"ink": "^5.0.0",
"ink-progress-bar": "^3.0.0",
"ink-spinner": "^5.0.0",
"magic-string": "^0.30.10",
"micromatch": "^4.0.7",
"react": "^18.3.1",
"resolve": "^1.22.8",
"rollup": "^4.18.0",
"rollup-plugin-node-externals": "^7.1.2",
"rollup-plugin-polyfill-node": "^0.13.0",
"semver": "^7.6.2",
"spdx-license-list": "^6.9.0"
},
Possible solution
No response
Additional context
This issue was previously noted and investigated at milesj/packemon#251
Additionally, assigning a version string to node with a patch version will result in unexpected behavior.
import globals from "globals/globals.json" with {type: "json"}const globals = JSON.parse(node_fs.readFileSync(new URL(undefined("globals/globals.json"))));
// TypeError: undefined is not a function
💻
How are you using Babel?
@rollup/plugin-babel
Input code
https://babel.dev/repl#?browsers=&build=&builtIns=false&corejs=false&spec=false&loose=false&code_lz=JYWwDg9gTgLgBAcwDYQEYEMkGc4DMoQhwBEyamWA9GRtgHQBWWEAdsXAO7AwAWcA3jACeYAKYAuEk1bEAvgCh5ogB6RYcACajc6AK5J4NCkA&debug=false&forceAllTransforms=false&modules=commonjs&shippedProposals=false&circleciRepo=&evaluate=true&fileSize=false&timeTravel=false&sourceType=unambiguous&lineWrap=true&presets=env%2Ctypescript&prettier=false&targets=Node-20.9&version=7.24.6&externalPlugins=%40babel%2Fplugin-proposal-json-modules%407.24.6&assumptions=%7B%7D
Configuration file name
No response
Configuration
{ "caller": { "name": "packemon" }, "comments": true, "parserOpts": { "sourceType": "unambiguous", "strictMode": true }, "plugins": [ "C:\\Repos\\HaloSPV3\\hce.shared-config\\node_modules\\@babel\\plugin-syntax-import-attributes\\lib\\index.js", "@babel/plugin-proposal-json-modules" ], "presets": [ [ "C:\\Repos\\HaloSPV3\\hce.shared-config\\node_modules\\@babel\\preset-typescript\\lib\\index.js", { "allowDeclareFields": true, "onlyRemoveTypeImports": false, "optimizeConstEnums": true } ] ], "configFile": false, "babelrc": false }This is incomplete. Packemon conditionally adds more plugins and presets (including
@babel/preset-env) before passing the config to rollup. TheSHOW_CONFIG_FORenvironment variable had no effect.Current and expected behavior
@babel/plugin-proposal-json-modulemay output some ESM code to CJS outputs, resulting in build errors.Fiddling with config values eventually caused the top-level await to be removed and the
constwas moved to the bottom of my imports group (as expected), but aimport.meta.resolve(...)replace withundefined(...).Environment
System:
OS: Windows 11 10.0.22621
Binaries:
Node: 22.2.0 - ~\scoop\apps\nodejs\current\node.EXE
Yarn: 1.22.22 - ~\scoop\apps\nodejs\current\bin\yarn.CMD
npm: 10.8.0 - ~\scoop\apps\nodejs\current\bin\npm.CMD
pnpm: 9.1.2 - ~\scoop\apps\nodejs\current\bin\pnpm.CMD
npmPackages:
@babel/cli: ^7.24.6 => 7.24.6
@babel/core: ^7.24.6 => 7.24.6
@babel/eslint-parser: ^7.24.6 => 7.24.6
@babel/helper-import-to-platform-api: ^7.24.6 => 7.24.6
@babel/plugin-proposal-json-modules: ^7.24.6 => 7.24.6
@babel/plugin-syntax-import-attributes: ^7.24.6 => 7.24.6
eslint: ^8.57.0 => 8.57.0
Additionally, packemon's dependencies (
Possible solution
No response
Additional context
This issue was previously noted and investigated at milesj/packemon#251
Additionally, assigning a version string to
nodewith apatchversion will result in unexpected behavior.