Hi there,
When I try to run react application by typing “npm start” compiling takes about 15 seconds.
I don’t get any errors. In other apps compiling is very short (1 sec) What is the cause of it? Webpack issue?
Maybe.
Show us package.json
file
{
"name": "react-complete-guide",
"version": "0.1.0",
"private": true,
"dependencies": {
"autoprefixer": "9.4.7",
"axios": "^0.18.0",
"babel-core": "6.26.3",
"babel-eslint": "10.0.1",
"babel-jest": "24.0.0",
"babel-loader": "8.0.5",
"babel-preset-react-app": "^7.0.0",
"babel-runtime": "6.26.0",
"case-sensitive-paths-webpack-plugin": "2.2.0",
"chalk": "2.4.2",
"css-loader": "2.1.0",
"dotenv": "6.2.0",
"eslint": "5.13.0",
"eslint-config-react-app": "^3.0.6",
"eslint-loader": "2.1.1",
"eslint-plugin-flowtype": "3.2.1",
"eslint-plugin-import": "2.16.0",
"eslint-plugin-jsx-a11y": "6.2.0",
"eslint-plugin-react": "7.12.4",
"extract-text-webpack-plugin": "3.0.2",
"file-loader": "3.0.1",
"fs-extra": "7.0.1",
"html-webpack-plugin": "^4.0.0-beta.5",
"jest": "24.0.0",
"object-assign": "4.1.1",
"postcss-flexbugs-fixes": "4.1.0",
"postcss-loader": "3.0.0",
"promise": "8.0.2",
"prop-types": "^15.6.2",
"react": "^16.7.0",
"react-dev-utils": "^7.0.1",
"react-dom": "^16.7.0",
"style-loader": "0.23.1",
"sw-precache-webpack-plugin": "0.11.5",
"terser": "^3.14.1",
"url-loader": "1.1.2",
"webpack": "4.29.0",
"webpack-dev-server": "3.1.14",
"webpack-manifest-plugin": "2.0.4",
"whatwg-fetch": "3.0.0"
},
"scripts": {
"start": "node scripts/start.js",
"build": "node scripts/build.js",
"test": "node scripts/test.js --env=jsdom"
},
"jest": {
"collectCoverageFrom": [
"src/**/*.{js,jsx}"
],
"setupFiles": [
"<rootDir>/config/polyfills.js"
],
"testMatch": [
"<rootDir>/src/**/__tests__/**/*.js?(x)",
"<rootDir>/src/**/?(*.)(spec|test).js?(x)"
],
"testEnvironment": "node",
"testURL": "http://localhost",
"transform": {
"^.+\\.(js|jsx)$": "<rootDir>/node_modules/babel-jest",
"^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
"^(?!.*\\.(js|jsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
},
"transformIgnorePatterns": [
"[/\\\\]node_modules[/\\\\].+\\.(js|jsx)$"
],
"moduleNameMapper": {
"^react-native$": "react-native-web"
},
"moduleFileExtensions": [
"web.js",
"js",
"json",
"web.jsx",
"jsx",
"node"
]
},
"babel": {
"presets": [
"react-app"
]
},
"eslintConfig": {
"extends": "react-app"
}
}
I was expecting to see some ancient version of webpack or babel, but everything seems quite fresh.
Post a link to the repo, I’ll try on my computer.
I don’t think it’s normal. I’ve got 20 seconds on my stopwatch when just I changed some letter and hit save
@camperextraordinaire
Try to edit some files and see how long recompiling takes. For me initial start is about 15s, recompiling 10…15s, which is too long.
@axon7
It looks like an ejected crate-react-app, and probably someone did some modificatons in config files.
Easiest way would be to create a new app with create-react-app and just copy the src files
EDIT:
Found it. config > webpack.config.dev.js, Line 29 change to ‘development’
2 Likes
Hurray! Thank you