qap_install

npminstall

Let npm install fast and easy.

Use as Cli

Install

$ npm install npminstall -g

Usage

In cnpm

It is integrated in cnpm.

$ npm install cnpm -g
$ cnpm install  // will use npminstall

npminstall

Usage:

  npminstall
  npminstall <pkg>
  npminstall <pkg>@<tag>
  npminstall <pkg>@<version>
  npminstall <pkg>@<version range>
  npminstall <folder>
  npminstall <tarball file>
  npminstall <tarball url>
  npminstall <git:// url>
  npminstall <github username>/<github project>

Can specify one or more: npm install ./foo.tgz bar@stable /some/folder
If no argument is supplied, installs dependencies from ./package.json.

Options:

  --production: won't install devDependencies
  --save, --save-dev, --save-optional: save installed dependencies into package.json
  -g, --global: install devDependencies to global directory which specified in '$ npm config get prefix'
  -r, --registry: specify custom registry
  -c, --china: specify in china, will automatically using chinses npm registry and other binary's mirrors
  -d, --detail: show detail log of installation
  --trace: show memory and cpu usages traces of installation
  --ignore-scripts: ignore all preinstall / install and postinstall scripts during the installation
  --forbidden-licenses: forbit install packages which used these licenses
  --engine-strict: refuse to install (or even consider installing) any package that claims to not be compatible with the current Node.js version.
  --flatten: flatten dependencies by matching ancestors' dependencies

npmuninstall

Usage:

  npmuninstall <pkg>
  npmuninstall <pkg>@<version>
  npmuninstall <pkg>@<version> [<pkg>@<version>]

npmlink

Usage:

  npmlink <folder>

Use as Lib

Install

$ npm install npminstall --save

Usage

const co = require('co');
const npminstall = require('npminstall');

co(function* () {
  yield npminstall({
    // install root dir
    root: process.cwd(),
    // optional packages need to install, default is package.json's dependencies and devDependencies
    // pkgs: [
    //   { name: 'foo', version: '~1.0.0' },
    // ],
    // install to specific directory, default to root
    // targetDir: '/home/admin/.global/lib',
    // link bin to specific directory (for global install)
    // binDir: '/home/admin/.global/bin',
    // registry, default is https://registry.npmjs.org
    // registry: 'https://registry.npmjs.org',
    // debug: false,
    // storeDir: root + 'node_modules',
    // ignoreScripts: true, // ignore pre/post install scripts, default is `false`
    // forbiddenLicenses: forbit install packages which used these licenses
  });
}).catch(err => {
  console.error(err.stack);
});

Support Features

• all types of npm package
  • a) a folder containing a program described by a package.json file (npm install file:eslint-rule)
  • b) a gzipped tarball containing (a) (npm install ./rule.tgz)
  • c) a url that resolves to (b) (npm install https://github.com/indexzero/forever/tarball/v0.5.6)
  • d) a @ that is published on the registry with (c)
  • e) a @ (see npm-dist-tag) that points to (d)
  • f) a that has a "latest" tag satisfying (e)
  • g) a that resolves to (a) (npm install git://github.com/timaschew/cogent#fix-redirects)
• All platform support
• global install (-g, --global)
• preinstall, install, postinstall scripts
• node-gyp
  • node-pre-gyp
• bin (yo@1.6.0, fsevents@1.0.6)
• scoped package
• bundleDependencies / bundledDependencies (node-pre-gyp@0.6.19, fsevents@1.0.6)
• optionalDependencies (pm2@1.0.0)
• peerDependencies (co-defer@1.0.0, co-mocha@1.1.2, estraverse-fb@1.3.1)
• deprecate message
• --production mode
• save, save-dev, save-optional
• support ignore-scripts
• uninstall

Different with NPM

This project is inspired by pnpm, and has a similar store structure like pnpm. You can read pnpm vs npm to see the different with npm.

Limitations

• You can't install from shrinkwrap(and don't want to support for now).
• Peer dependencies are a little trickier to deal with(see rule 1 below).
• You can't publish npm modules with bundleDependencies managed by npminstall(because of rule 2 below).
• npminstall will collect all postinstall scripts, and execute them until all dependencies installed.
• If last install failed, better to cleanup node_modules directory before retry.

node_modules directory

Two rules:

• The latest version of modules will link at options.storeDir's node_modules.
• Module's dependencies will link at module's node_modules.

e.g.:

• app: { "dependencies": { "debug": "2.2.0" } } (root)
• debug@2.2.0: { "dependencies": { "ms": "0.7.1" } }

app/
├── package.json
└── node_modules
    ├── .2.2.0@debug
    │   ├── node_modules
    │   │   └── ms -> ../../.0.7.1@ms
    ├── .0.7.1@ms
    ├── debug -> .2.2.0@debug
    └── ms -> .0.7.1@ms # for peerDependencies

flattened vs nested

npminstall will always try to install the maximal matched version of semver:

root/
  koa@1.1.0
  mod/
    koa@~1.1.0
# will install tow different version of koa when use npminstall.

you can enable flatten mode by --flatten flag, in this mod, npminstall will try to use ancestors' dependencies to minimize the dependence-tree.

root/
  koa@1.1.0
  mod/
    koa@~1.1.0

root/
  koa@1.1.0
  mod/
    koa@^1.1.0
# both the same version: 1.1.0

root/
  koa@~1.1.0
  mod/
    koa@^1.1.0
# both the same version: 1.1.2

root/
  mod/
    koa@^1.1.0
  moe/
    koa@~1.1.0
# tow different versions

npminstall will always treat n.x and n.m.x as flattened

root/
  koa@1.1.0
  mod/
    koa@1.1.x
both the same version: 1.1.0

root/
  koa@~1.1.0
  mod/
    koa@1.x
both the same version: 1.1.2

Benchmarks

cnpmjs.org install

• npminstall@1.2.0
• pnpm@0.18.0
• npm@2.14.12

cli	real	user	sys
npminstall	0m10.908s	0m8.733s	0m4.282s
npminstall with cache	0m8.815s	0m7.492s	0m3.644s
npminstall --no-cache	0m10.279s	0m8.255s	0m3.932s
pnpm	0m13.509s	0m11.650s	0m4.443s
npm	0m28.171s	0m26.085s	0m8.219s
npm with cache	0m20.939s	0m19.415s	0m6.302s

pnpm benchmark

see https://github.com/rstacruz/pnpm#benchmark

npminstall babel-preset-es2015 browserify chalk debug minimist mkdirp
    real	0m8.929s       user	0m5.606s       sys	0m2.913s

pnpm i babel-preset-es2015 browserify chalk debug minimist mkdirp
    real	0m12.998s      user	0m8.653s       sys	0m3.362s

npm i babel-preset-es2015 browserify chalk debug minimist mkdirp
    real	1m4.729s       user	0m55.589s      sys	0m23.135s

License

MIT