npm install node_module –save自动更新dependencies字段值
npm install node_module –save-dev自动更新devDependencies字段值
看下面的一个package.json文件
{
"private": true,
"version": "0.0.1",
"description": "YOUR DESCRIPTION - Generated by generator-react-webpack",
"main": "",
"scripts": {
"clean": "rimraf dist/*",
"copy": "copyfiles -f ./src/index.html ./src/favicon.ico ./dist",
"dist": "npm run copy & webpack --env=dist",
},
"repository": "",
"keywords": [],
"author": "Your name here",
"devDependencies": {
"babel-core": "^6.0.0",
"babel-eslint": "^6.0.0",
"babel-loader": "^6.0.0",
"babel-polyfill": "^6.3.14",
"babel-preset-es2015": "^6.0.15",
"babel-preset-react": "^6.0.15",
"babel-preset-stage-0": "^6.5.0",
"bower-webpack-plugin": "^0.1.9",
"chai": "^3.2.0",
"copyfiles": "^1.0.0",
"css-loader": "^0.23.0",
"eslint": "^3.0.0",
"eslint-loader": "^1.0.0",
"eslint-plugin-react": "^6.0.0",
"file-loader": "^0.9.0",
"mocha": "^3.0.0",
"null-loader": "^0.1.1",
"open": "0.0.5",
"phantomjs-prebuilt": "^2.0.0",
"react-addons-test-utils": "^15.0.0",
"react-hot-loader": "^1.2.9",
"rimraf": "^2.4.3",
"style-loader": "^0.13.0",
"url-loader": "^0.5.6",
"webpack": "^1.12.0",
"webpack-dev-server": "^1.12.0"
},
"dependencies": {
"core-js": "^2.0.0",
"normalize.css": "^4.0.0",
"react": "^15.0.0",
"react-dom": "^15.0.0"
}
}
相信你已经找到了区别：
devDependencies只用于开发阶段完成集成测试等功能模块依赖；（例如eslint，webpack的loader）
dependencies 实际生产环境所需要模块依赖；（例如：react框架的核心文件）
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