build/generate-contributors.js

const { exec } = require('child_process')
const fs = require('fs')

const dir = './contents'

const entries = {}
const paths = []

const loopDir = path => {
  if (path.match(/\.DS_Store$/)) {
    return
  }
  if (fs.lstatSync(path).isDirectory()) {
    const children = fs.readdirSync(path)
    children.forEach(child => loopDir([path, child].join('/')))
  } else {
    paths.push(path)
  }
}

loopDir(dir)

for (let i = 0; i < paths.length; ++i) {
  const cmd = `git log --pretty=format:"%an%x09" ${paths[i]} | sort | uniq`
  ;(i => {
    exec(cmd, (err, stdout) => {
      if (err) {
        console.error(err)
      } else {
        const key = paths[i].slice(2)
        entries[key] = stdout
          .trim()
          .split('\n')
          .map(name => name.trim())
      }
      if (i === paths.length - 1) {
        const text =
          'export default ' + JSON.stringify(entries, null, '    ') + ';'
        fs.writeFileSync('components/helper/contributors.ts', text)
      }
    })
  })(i)
}