Method getErrorMessage

lib/command.js:2105–2113

(option)

    };

    const getErrorMessage = (option) => {
      const bestOption = findBestOptionFromValue(option);
      const optionKey = bestOption.attributeName();
      const source = this.getOptionValueSource(optionKey);
      if (source === 'env') {
        return `environment variable '${bestOption.envVar}'`;
      }
      return `option '${bestOption.flags}'`;
    };

    const message = `error: ${getErrorMessage(option)} cannot be used with ${getErrorMessage(conflictingOption)}`;
    this.error(message, { code: 'commander.conflictingOption' });