Convert a bunch of ppts to txt files

proc.js

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

let inDir = 'raw-ppts'
let outDir = 'out'

fs.readdirSync(inDir).forEach(n=>{
  if(n.endsWith('.ppt')) {
    let inFile = path.join(inDir, n)
    let outFile = path.join(outDir, 
      n.replace(/\s*\(\w*\).*beta/g, '')
      .replace(/_*beta/g, '')
      .replace('.ppt', '.txt')
      .replace(/\s+/g, '-')
      .toLowerCase()
    );

    fs.writeFileSync(outFile, ppt.utils.to_text(ppt.readFile(inFile)).join('\n'))
  }
})