docs: function Writer (metaint, opts) {
    if (!(this instanceof Writer)) {
      return new Writer(metaint, opts);
    }
    if (!isFinite(metaint)) {
      throw new Error('Writer requires a "metaint" number');
    }
    Transform.call(this, opts);
  
    this.metaint = +metaint;
  
    this._queue = [];
  
    this._passthrough(this.metaint, this._inject);
  }