Method valueFromOption

lib/option.js:297–305

* Did the value come from the option, and not from possible matching dual option? * * @param {*} value * @param {Option} option * @returns {boolean}

(value, option)

   * @returns {boolean}
   */
  valueFromOption(value, option) {
    const optionKey = option.attributeName();
    if (!this.dualOptions.has(optionKey)) return true;

    // Use the value to deduce if (probably) came from the option.
    const preset = this.negativeOptions.get(optionKey).presetArg;
    const negativeValue = preset !== undefined ? preset : false;
    return option.negate === (negativeValue === value);
  }
}

/**