cli.js

#!/usr/bin/env node

import fs from 'node:fs'
import { argv } from 'node:process'
import { copyRules, dedupeAliases } from './index.js'

let [inputFile = 0, outputFile = 1, watch = ''] = argv.slice(2)

transform()
if (watch.includes('-w')) {
  let debounceId = 0
  fs.watch(inputFile, () => {
    clearTimeout(debounceId)
    debounceId = setTimeout(transform, 100)
  })
}

function transform() {
  let input = fs.readFileSync(inputFile, 'utf-8')
  let [output, aliases] = dedupeAliases(input)
  let [final, rules] = copyRules(output)
  fs.writeFileSync(outputFile, final, 'utf-8')
  console.error(`Aliases: ${aliases.initial} -> ${aliases.final}, rules: ${rules.initial} -> ${rules.final}`)
}