simple regex-based script to find factory usages

find-react-factories.js

const fs = require('fs')
const path = require('path')

let files = 0
let lines = 0
function rd(dir) {
  for (const dirent of fs.readdirSync(dir, { withFileTypes: true })) {
    const fname = path.join(dir, dirent.name)
    if (dirent.isDirectory()) {
      rd(fname)
    } else if (dirent.isFile()) {
      if (fname.endsWith('.sketch') || fname.endsWith('.png') || fname.endsWith('.jpg')) continue
      const matches = fs
        .readFileSync(fname, 'utf-8')
        .matchAll(/(?<![a-zA-Z0-9.])(?<!new )(?<!function )[A-Z][a-zA-Z]+\(/g)
      let first = true
      for (const match of matches) {
        if (
          [
            'List(',
            'Boolean(',
            'Map(',
            'Number(',
            'Set(',
            'String(',
            'Record(',
            'OrderedSet(',
            'OrderedMap(',
            'Array(',
            'LinePart(',
          ].includes(match[0])
        ) {
          continue
        }
        if (first) {
          first = false
          console.log(fname + ':' + getLineNumber(match))
          files++
        }
        console.log('  ' + getLine(match))
        lines++
      }
    }
  }
}
rd('modules')
console.log({ files, lines })

function getLineNumber(match) {
  let index = match.index
  while (index > 0) {
    if (match.input[index] === '\n') {
      const tail = match.input.slice(index + 1)
      const head = match.input.slice(0, index)
      return head.split('\n').length + 1
    }
    index--
  }
}

function getLine(match) {
  let index = match.index
  while (index > 0) {
    if (match.input[index] === '\n') {
      const tail = match.input.slice(index + 1)
      const head = match.input.slice(0, index)
      return head.split('\n').length + 1 + ': ' + tail.slice(0, tail.indexOf('\n')).trim()
    }
    index--
  }
}