code: function webp (options) {
    if (is.object(options) && is.defined(options.quality)) {
      if (is.integer(options.quality) && is.inRange(options.quality, 1, 100)) {
        this.options.webpQuality = options.quality;
      } else {
        throw new Error('Invalid quality (integer, 1-100) ' + options.quality);
      }
    }
    if (is.object(options) && is.defined(options.alphaQuality)) {
      if (is.integer(options.alphaQuality) && is.inRange(options.alphaQuality, 0, 100)) {
        this.options.webpAlphaQuality = options.alphaQuality;
      } else {
        throw new Error('Invalid webp alpha quality (integer, 0-100) ' + options.alphaQuality);
      }
    }
    if (is.object(options) && is.defined(options.lossless)) {
      this._setBooleanOption('webpLossless', options.lossless);
    }
    if (is.object(options) && is.defined(options.nearLossless)) {
      this._setBooleanOption('webpNearLossless', options.nearLossless);
    }
    return this._updateFormatOut('webp', options);
  }
docs: Use these WebP options for output image.
  
  @example
  // Convert any input to lossless WebP output
  const data = await sharp(input)
  .webp({ lossless: true })
  .toBuffer();
  
  @param {Object} [options] - output options
  @param {Number} [options.quality=80] - quality, integer 1-100
  @param {Number} [options.alphaQuality=100] - quality of alpha layer, integer 0-100
  @param {Boolean} [options.lossless=false] - use lossless compression mode
  @param {Boolean} [options.nearLossless=false] - use near_lossless compression mode
  @param {Boolean} [options.force=true] - force WebP output, otherwise attempt to use input format
  @returns {Sharp}
  @throws {Error} Invalid options