progress-reporter.js

const argv = process.execArgv.join();
const isDebug = argv.includes('inspect') || argv.includes('debug');

class ProgressReporter {
  constructor(prefix) {
    this.prefix = prefix;
    this.lastProgress = 0;
  }

  printProgress(percent, isFinal) {
    if (percent === 0) this.lastProgress = 0;
    if (percent > this.lastProgress) {
      const output = `${this.prefix}: Progress: ${percent}%`;
      if (isDebug) {
        console.log(output);
      } else {
        process.stdout.clearLine();
        process.stdout.cursorTo(0);
        process.stdout.write(output);
        if (isFinal) {
          process.stdout.write('\n');
        }
      }
      this.lastProgress = percent;
    }
  }
}

module.exports = (prefix) => {
  return new ProgressReporter(prefix);
}