`Lerna link` and `patch-package`

README.md

For anyone who stuck after run lerna link, patch-package will not be executed at lerna bootstrap

1. At root path (same location with lerna.json), edit package.json as below

// ...
  "devDependencies": {
    "@lerna/child-process": "^4.0.0",
    "@lerna/project": "^4.0.0",
    // ...
  },
  "scripts": {
    "postinstall": "node bootstrap.js"
  }

2. Create bootstrap.js at root path

// bootstrap.js
const fs = require('fs')
const path = require('path')
const { getPackagesSync } = require('@lerna/project')
const { spawnStreaming } = require('@lerna/child-process')

const packages = getPackagesSync()
packages
  .forEach(pkg => {
    const patches = path.join(pkg.location, 'patches')
    if (fs.existsSync(patches)) {
      spawnStreaming('node', [require.resolve('patch-package'), '--patch-dir', path.relative(__dirname, patches)], { shell: true })
    }
  })