Install npm pacakges from a list

npm-one-by-one.js

// Installs NPM packages from a generated list
// 1. Generate the list with ls node_modules > modules.txt
// 2. Run node npm-one-by-one.js
// This is primarily useful for populating a Nexus proxy when npm install sometimes fails

const fs = require('fs')
const cp = require('child_process')

// The maximum time we try to install any package before giving an error
const TIMEOUT_SECONDS = 30

const modules = fs.readFileSync('modules.txt', 'utf8').split('\n')

modules.forEach(moduleName => {
  let fsStat = null
  try {
    fsStat = fs.statSync('node_modules/' + moduleName)
  } catch (e) {
    // Do nothing, all the logic is following
  }

  if (fsStat !== null) {
    console.log('Skipping ' + moduleName)
    return
  }

  if (moduleName.startsWith('@')) {
    return
  }

  console.log('Installing ' + moduleName)
  let output = cp.spawnSync('npm', ['install', moduleName], {timeout: TIMEOUT_SECONDS * 1000})
  if (output.status !== 0) {
    console.log('Install failed')
    console.log(output.stderr.toString())
  } else {
    console.log('Install done')
  }
})