例如一组vue项目的package.json
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75{ "name": "test-project", "version": "1.0.0", "description": "A Vue.js project", "main": "src/main.js", "private": true, "scripts": { "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js", "start": "npm run dev", "unit": "jest --config test/unit/jest.conf.js --coverage", "test": "npm run unit", "lint": "eslint --ext .js,.vue src test/unit", "build": "node build/build.js" }, "dependencies": { "vue": "^2.5.2" }, "devDependencies": { "autoprefixer": "^7.1.2", "babel-core": "^6.22.1", "babel-eslint": "^8.2.1", "babel-helper-vue-jsx-merge-props": "^2.0.3", "babel-jest": "^21.0.2", "babel-loader": "^7.1.1", "babel-plugin-dynamic-import-node": "^1.2.0", "babel-plugin-syntax-jsx": "^6.18.0", "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0", "babel-plugin-transform-runtime": "^6.22.0", "babel-plugin-transform-vue-jsx": "^3.5.0", "babel-preset-env": "^1.3.2", "babel-preset-stage-2": "^6.22.0", "chalk": "^2.0.1", "copy-webpack-plugin": "^4.0.1", "css-loader": "^0.28.0", "eslint": "^4.15.0", "eslint-config-airbnb-base": "^11.3.0", "eslint-friendly-formatter": "^3.0.0", "eslint-import-resolver-webpack": "^0.8.3", "eslint-loader": "^1.7.1", "eslint-plugin-import": "^2.7.0", "eslint-plugin-vue": "^4.0.0", "extract-text-webpack-plugin": "^3.0.0", "file-loader": "^1.1.4", "friendly-errors-webpack-plugin": "^1.6.1", "html-webpack-plugin": "^2.30.1", "jest": "^22.0.4", "jest-serializer-vue": "^0.3.0", "node-notifier": "^5.1.2", "optimize-css-assets-webpack-plugin": "^3.2.0", "ora": "^1.2.0", "portfinder": "^1.0.13", "postcss-import": "^11.0.0", "postcss-loader": "^2.0.8", "postcss-url": "^7.2.1", "rimraf": "^2.6.0", "semver": "^5.3.0", "shelljs": "^0.7.6", "uglifyjs-webpack-plugin": "^1.1.1", "url-loader": "^0.5.8", "vue-jest": "^1.0.2", "vue-loader": "^13.3.0", "vue-style-loader": "^3.0.1", "vue-template-compiler": "^2.5.2", "webpack": "^3.6.0", "webpack-bundle-analyzer": "^2.9.0", "webpack-dev-server": "^2.9.1", "webpack-merge": "^4.1.0" }, "engines": { "node": ">= 6.0.0", "npm": ">= 3.0.0" }, "browserslist": ["> 1%", "last 2 versions", "not ie <= 8"] }
这里有很多东西:
- name 设置了应用程序/软件包的名称。
- version 表明了当前的版本。
- description 是应用程序/软件包的简短描述。
- main 设置了应用程序的入口点。
- private 如果设置为 true,则可以防止应用程序/软件包被意外地发布到 npm。
- scripts 定义了一组可以运行的 node 脚本。
- dependencies 设置了作为依赖安装的 npm 软件包的列表。
- devDependencies 设置了作为开发依赖安装的 npm 软件包的列表。
- engines 设置了此软件包/应用程序在哪个版本的 Node.js 上运行。
- browserslist 用于告知要支持哪些浏览器(及其版本)。
以上所有的这些属性都可被 npm 或其他工具使用。
http://nodejs.cn/learn/the-package-json-guide
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