A hack to use `react-docgen` to iterate over all React component files in a directory tree.

walkReactComponentFiles.js

'use strict'

const reactDocs = require('react-docgen')
const dir = require('node-dir')

export default function walkReactComponentFiles(path, pattern, handleFilename, done) {
  const iterator = function(error, content, filename, next) {
    if(error) {
      throw error
    }
    try {
      reactDocs.parse(content)
    } catch(parseError) {
      return next() // Skip non-components.
    }
    handleFilename(filename)
    return next()
  }
  dir.readFiles(path, {match: pattern}, iterator, done)
}