Simple progress bar in TS

progressBar.ts

export default (prc: number) => {
  const cols = process.stdout.columns - 7
  
  const oneBar = cols / 100
  
  let i = 0
  
  let progressBar = '['
  
  const prcCrc = prc * oneBar
  
  while (true) {
    if (i === cols) {
      break
    }
  
    if (i <= prcCrc) {
      progressBar += '='
    } else {
      progressBar += '-'
    }
  
    i++
  }
  
  progressBar = progressBar + `] ${('    ' + prc).slice(-3)}%`
  
  return progressBar
}