I created a simple app a few weeks ago using create-react-app almost immediately I started getting this error in VSCode about it not being happy about something Babel related...which I ignored. My app works, I'm able to build and deploy to Heroku. And ESLint is also working. But the error keeps popping up in VSCode which has lead me down this rabbit hole of Babel and ESLint nightmares.
The error I was getting was regarding babel-eslint which I actually didn't have installed despite it being the parser named in my .eslintrc.json config. This is what my package.json file looked like prior to me making any changes:
{
"name": "new-rails-react-project",
"private": true,
"dependencies": {
"@babel/preset-react": "^7.13.13",
"@rails/actioncable": "^6.0.0",
"@rails/activestorage": "^6.0.0",
"@rails/ujs": "^6.0.0",
"@rails/webpacker": "5.4.0",
"axios": "^0.21.1",
"babel-plugin-transform-react-remove-prop-types": "^0.4.24",
"jquery": "^3.6.0",
"prop-types": "^15.7.2",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-router-dom": "^5.2.0",
"redbox-react": "^1.6.0",
"webpack": "^4.46.0",
"webpack-cli": "^3.3.12"
},
"version": "0.1.0",
"devDependencies": {
"eslint": "^7.27.0",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-import": "^2.23.4",
"eslint-plugin-jsx-a11y": "^6.4.1",
"eslint-plugin-react": "^7.24.0",
"eslint-plugin-react-hooks": "^4.2.0",
"prettier": "^2.3.0",
"webpack-dev-server": "^3.11.2"
},
"scripts": {
"start": "./bin/webpack-dev-server"
}
}
And this is what my .eslintrc.json file looked like:
{
"extends": [
"eslint:recommended",
"plugin:import/errors",
"plugin:react/recommended",
"plugin:jsx-a11y/recommended",
"prettier"
],
"plugins": ["react", "import", "jsx-a11y", "react-hooks"],
"rules": {
"react/prop-types": 0,
"react-hooks/rules-of-hooks": "error",
"no-console": "warn",
"no-dupe-keys": "warn",
"jsx-a11y/rule-name": 0,
"jsx-a11y/anchor-has-content": "warn"
},
"parser": "babel-eslint",
"parserOptions": {
"ecmaVersion": 2018,
"sourceType": "module",
"ecmaFeatures": { "jsx": true }
},
"env": {
"es6": true,
"browser": true,
"node": true
},
"settings": {
"react": {
"version": "detect"
}
}
}
Since babel-eslint is deprecated I added @babel/eslint-parser and cannot for the life of me figure out how to make this work. Here are my current related config files:
package.json
"name": "ne-campground-reviews",
"private": true,
"dependencies": {
"@babel/plugin-transform-react-jsx": "^7.14.5",
"@babel/preset-react": "^7.13.13",
"@rails/actioncable": "^6.0.0",
"@rails/activestorage": "^6.0.0",
"@rails/ujs": "^6.0.0",
"@rails/webpacker": "5.4.0",
"axios": "^0.21.1",
"babel-plugin-transform-react-remove-prop-types": "^0.4.24",
"jquery": "^3.6.0",
"lightbox2": "^2.11.3",
"prop-types": "^15.7.2",
"react": "^17.0.2",
"react-dom": "^17.0.2",
"react-icons": "^4.2.0",
"react-router-dom": "^5.2.0",
"redbox-react": "^1.6.0",
"webpack": "^4.46.0",
"webpack-cli": "^3.3.12"
},
"version": "0.1.0",
"devDependencies": {
"@babel/core": "^7.14.6",
"@babel/eslint-parser": "^7.14.7",
"@babel/eslint-plugin": "^7.14.5",
"eslint": "^7.29.0",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-import": "^2.23.4",
"eslint-plugin-jsx-a11y": "^6.4.1",
"eslint-plugin-react": "^7.24.0",
"eslint-plugin-react-hooks": "^4.2.0",
"prettier": "^2.3.0",
"webpack-dev-server": "^3.11.2"
},
"scripts": {
"start": "./bin/webpack-dev-server"
}
}
.eslintrc.json
{
"extends": [
"eslint:recommended",
"plugin:import/errors",
"plugin:react/recommended",
"plugin:jsx-a11y/recommended",
"prettier"
],
"plugins": ["react", "import", "jsx-a11y", "react-hooks", "@babel"],
"rules": {
"react/prop-types": 0,
"react-hooks/rules-of-hooks": "error",
"no-console": "warn",
"no-dupe-keys": "warn",
"jsx-a11y/rule-name": 0,
"jsx-a11y/anchor-has-content": "warn"
},
"parser": "@babel/eslint-parser",
"parserOptions": {
"ecmaVersion": 2018,
"sourceType": "module",
"ecmaFeatures": { "jsx": true },
"requireConfigFile": false,
"babelOptions": {
"presets": ["@babel/preset-react"]
}
},
"env": {
"es6": true,
"browser": true,
"node": true
},
"settings": {
"react": {
"version": "detect"
}
}
}
And this is babel.config.js although I don't know if this file is still needed and/or configured correctly
module.exports = function(api) {
var validEnv = ['development', 'test', 'production']
var currentEnv = api.env()
var isDevelopmentEnv = api.env('development')
var isProductionEnv = api.env('production')
var isTestEnv = api.env('test')
if (!validEnv.includes(currentEnv)) {
throw new Error(
'Please specify a valid `NODE_ENV` or ' +
'`BABEL_ENV` environment variables. Valid values are "development", ' +
'"test", and "production". Instead, received: ' +
JSON.stringify(currentEnv) +
'.'
)
}
return {
presets: [
isTestEnv && [
'@babel/preset-env',
{
targets: {
node: 'current'
},
modules: 'commonjs'
},
'@babel/preset-react'
],
(isProductionEnv || isDevelopmentEnv) && [
'@babel/preset-env',
{
forceAllTransforms: true,
useBuiltIns: 'entry',
corejs: 3,
modules: false,
exclude: ['transform-typeof-symbol']
}
],
[
'@babel/preset-react',
{
development: isDevelopmentEnv || isTestEnv,
useBuiltIns: true
}
]
].filter(Boolean),
plugins: [
'babel-plugin-macros',
'@babel/plugin-syntax-dynamic-import',
isTestEnv && 'babel-plugin-dynamic-import-node',
'@babel/plugin-transform-destructuring',
[
'@babel/plugin-proposal-class-properties',
{
loose: true
}
],
[
'@babel/plugin-proposal-object-rest-spread',
{
useBuiltIns: true
}
],
[
'@babel/plugin-transform-runtime',
{
helpers: false,
regenerator: true,
corejs: false
}
],
[
'@babel/plugin-transform-regenerator',
{
async: false
}
],
isProductionEnv && [
'babel-plugin-transform-react-remove-prop-types',
{
removeImport: true
}
]
].filter(Boolean)
}
}
This error is what's currently popping up on things like import and module
Parsing error: Cannot find module '@babel/preset-react'
Require stack:
- /Users/maddoxgrey/Projects/ne-campground-reviews-v2/node_modules/@babel/core/lib/config/files/plugins.js
- /Users/maddoxgrey/Projects/ne-campground-reviews-v2/node_modules/@babel/core/lib/config/files/index.js
- /Users/maddoxgrey/Projects/ne-campground-reviews-v2/node_modules/@babel/core/lib/index.js
