以vue的package.json为例：
{
// 名称
"name": "vue",
// 版本
"version": "2.6.10",
// 描述
"description": "Reactive, component-oriented view layer for modern web interfaces.",
// npm包项目的主要入口文件，必须的
"main": "dist/vue.runtime.common.js",
// rollup 打包需要的入口文件
"module": "dist/vue.runtime.esm.js",
// npm 上所有的文件都开启 cdn 服务地址
"unpkg": "dist/vue.js",
// jsdelivr cdn公共库
"jsdelivr": "dist/vue.js",
// TypeScript 的入口文件
"typings": "types/index.d.ts",
// 当你发布package时，具体那些文件会发布上去
"files": [
"src",
"dist/*.js",
"types/*.d.ts"
],
// 声明该模块是否包含 sideEffects（副作用），从而可以为 tree-shaking 提供更大的优化空间。
"sideEffects": false,
"scripts": {
"dev": "rollup -w -c scripts/config.js --environment TARGET:web-full-dev",
"dev:cjs": "rollup -w -c scripts/config.js --environment TARGET:web-runtime-cjs-dev",
"dev:esm": "rollup -w -c scripts/config.js --environment TARGET:web-runtime-esm",
"dev:test": "karma start test/unit/karma.dev.config.js",
"dev:ssr": "rollup -w -c scripts/config.js --environment TARGET:web-server-renderer",
"dev:compiler": "rollup -w -c scripts/config.js --environment TARGET:web-compiler ",
"dev:weex": "rollup -w -c scripts/config.js --environment TARGET:weex-framework",
"dev:weex:factory": "rollup -w -c scripts/config.js --environment TARGET:weex-factory",
"dev:weex:compiler": "rollup -w -c scripts/config.js --environment TARGET:weex-compiler ",
"build": "node scripts/build.js",
"build:ssr": "npm run build -- web-runtime-cjs,web-server-renderer",
"build:weex": "npm run build -- weex",
"test": "npm run lint && flow check && npm run test:types && npm run test:cover && npm run test:e2e -- --env phantomjs && npm run test:ssr && npm run test:weex",
"test:unit": "karma start test/unit/karma.unit.config.js",
"test:cover": "karma start test/unit/karma.cover.config.js",
"test:e2e": "npm run build -- web-full-prod,web-server-basic-renderer && node test/e2e/runner.js",
"test:weex": "npm run build:weex && jasmine JASMINE_CONFIG_PATH=test/weex/jasmine.js",
"test:ssr": "npm run build:ssr && jasmine JASMINE_CONFIG_PATH=test/ssr/jasmine.js",
"test:sauce": "npm run sauce -- 0 && npm run sauce -- 1 && npm run sauce -- 2",
"test:types": "tsc -p ./types/test/tsconfig.json",
"lint": "eslint src scripts test",
"flow": "flow check",
"sauce": "karma start test/unit/karma.sauce.config.js",
"bench:ssr": "npm run build:ssr && node benchmarks/ssr/renderToString.js && node benchmarks/ssr/renderToStream.js",
"release": "bash scripts/release.sh",
"release:weex": "bash scripts/release-weex.sh",
"release:note": "node scripts/gen-release-note.js",
"commit": "git-cz"
},
// 代码质量检查
"gitHooks": {
"pre-commit": "lint-staged",
"commit-msg": "node scripts/verify-commit-msg.js"
},
// 代码检查
"lint-staged": {
"*.js": [
"eslint --fix",
"git add"
]
},
// git仓库所在位置
"repository": {
"type": "git",
"url": "git+https://github.com/vuejs/vue.git"
},
// 关键词
"keywords": [
"vue"
],
// 作者
"author": "Evan You",
// 开源协议
"license": "MIT",
// bug地址
"bugs": {
"url": "https://github.com/vuejs/vue/issues"
},
// 主页
"homepage": "https://github.com/vuejs/vue#readme",
// 依赖
"devDependencies": {
"@babel/core": "^7.0.0",
"@babel/plugin-proposal-class-properties": "^7.1.0",
"@babel/plugin-syntax-dynamic-import": "^7.0.0",
"@babel/plugin-syntax-jsx": "^7.0.0",
"@babel/plugin-transform-flow-strip-types": "^7.0.0",
"@babel/preset-env": "^7.0.0",
"@babel/register": "^7.0.0",
"@types/node": "^10.12.18",
"@types/webpack": "^4.4.22",
"acorn": "^5.2.1",
"babel-eslint": "^10.0.1",
"babel-helper-vue-jsx-merge-props": "^2.0.3",
"babel-loader": "^8.0.4",
"babel-plugin-istanbul": "^5.1.0",
"babel-plugin-transform-vue-jsx": "^4.0.1",
"babel-preset-flow-vue": "^1.0.0",
"buble": "^0.19.3",
"chalk": "^2.3.0",
"chromedriver": "^2.45.0",
"codecov": "^3.0.0",
"commitizen": "^2.9.6",
"conventional-changelog": "^1.1.3",
"cross-spawn": "^6.0.5",
"cz-conventional-changelog": "^2.0.0",
"de-indent": "^1.0.2",
"es6-promise": "^4.1.0",
"escodegen": "^1.8.1",
"eslint": "^5.7.0",
"eslint-plugin-flowtype": "^2.34.0",
"eslint-plugin-jasmine": "^2.8.4",
"file-loader": "^3.0.1",
"flow-bin": "^0.61.0",
"hash-sum": "^1.0.2",
"he": "^1.1.1",
"http-server": "^0.11.1",
"jasmine": "^2.99.0",
"jasmine-core": "^2.99.0",
"karma": "^3.1.1",
"karma-chrome-launcher": "^2.1.1",
"karma-coverage": "^1.1.1",
"karma-firefox-launcher": "^1.0.1",
"karma-jasmine": "^1.1.0",
"karma-mocha-reporter": "^2.2.3",
"karma-phantomjs-launcher": "^1.0.4",
"karma-safari-launcher": "^1.0.0",
"karma-sauce-launcher": "^2.0.2",
"karma-sourcemap-loader": "^0.3.7",
"karma-webpack": "^4.0.0-rc.2",
"lint-staged": "^8.0.0",
"lodash": "^4.17.4",
"lodash.template": "^4.4.0",
"lodash.uniq": "^4.5.0",
"lru-cache": "^5.1.1",
"nightwatch": "^0.9.16",
"nightwatch-helpers": "^1.2.0",
"phantomjs-prebuilt": "^2.1.14",
"puppeteer": "^1.11.0",
"resolve": "^1.3.3",
"rollup": "^1.0.0",
"rollup-plugin-alias": "^1.3.1",
"rollup-plugin-buble": "^0.19.6",
"rollup-plugin-commonjs": "^9.2.0",
"rollup-plugin-flow-no-whitespace": "^1.0.0",
"rollup-plugin-node-resolve": "^4.0.0",
"rollup-plugin-replace": "^2.0.0",
"selenium-server": "^2.53.1",
"serialize-javascript": "^1.3.0",
"shelljs": "^0.8.1",
"terser": "^3.10.2",
"typescript": "^3.1.3",
"webpack": "~4.28.4",
"weex-js-runtime": "^0.23.6",
"weex-styler": "^0.3.0",
"yorkie": "^2.0.0"
},
// 设置一些用于npm包的脚本命令会用到的配置参数
"config": {
"commitizen": {
"path": "./node_modules/cz-conventional-changelog"
}
}
}
另外还有3个字段比较重要：
// 本node包依赖的其他依赖包
"peerDependencies": {
"vue": "^2.5.2"
},
// 指明了该项目所需要的node.js版本
"engines": {
"node": ">=8.9.1",
"npm": ">=5.5.1",
"yarn": ">=1.3.2"
},
// 支持的浏览器
"browserslist": [
"last 3 Chrome versions",
"last 3 Firefox versions",
"Safari >= 10",
"Explorer >= 11",
"Edge >= 12",
"iOS >= 10",
"Android >= 6"
]