4.4 package.json 指南
如果使用 JavaScript、或者曾经与 JavaScript 项目、Node.js 或前端项目进行过交互,则肯定会遇到过 package.json 文件。
它有什么用途?应该了解它的什么,可以使用它完成哪些有趣的事情?
package.json 文件是项目的清单。 它可以做很多完全互不相关的事情。 例如,它是用于工具的配置中心。 它也是 npm 和 yarn 存储所有已安装软件包的名称和版本的地方。
文件结构
这是一个示例的 package.json 文件:
{}
它是空的! 对于应用程序,package.json 文件中的内容没有固定的要求。 唯一的要求是必须遵守 JSON 格式,否则,尝试以编程的方式访问其属性的程序则无法读取它。
如果要构建要在 npm 上分发的 Node.js 软件包,则必须具有一组可帮助其他人使用它的属性。 稍后会详细介绍。
这是另一个 package.json:
{
"name": "nodejs_cn"
}
它定义了 name 属性,用于告知应用程序或软件包的名称。
这是一个更复杂的示例,该示例是从 Vue.js 应用程序示例中提取的:
{
"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"]
}
本文是原创文章,采用 CC BY-NC-ND 4.0 协议,完整转载请注明来自 Eternal Night
评论
匿名评论
隐私政策
你无需删除空行,直接评论以获取最佳展示效果