src/main/options-normalizer.js/FlagSchema/preprocess
class FlagSchema:  preprocess(value, utils) {
    if (
      typeof value === "string" &&
      value.length !== 0 &&
      !this._flags.includes(value)
    ) {
      const suggestion = this._flags.find((flag) => leven(flag, value) < 3);
      if (suggestion) {
        utils.logger.warn(
          [
            `Unknown flag ${chalk.yellow(utils.descriptor.value(value))},`,
            `did you mean ${chalk.blue(utils.descriptor.value(suggestion))}?`,
          ].join(" ")
        );
        return suggestion;
      }
    }
    return value;
  }