Function processArgumentConfig

lib/cli.js:667–685

(argConfig, config, value, index)

 * @returns {LocalProblem | null} a problem if any
 */
const processArgumentConfig = (argConfig, config, value, index) => {
	if (index !== undefined && !argConfig.multiple) {
		return {
			type: "multiple-values-unexpected",
			path: argConfig.path
		};
	}
	const parsed = parseValueForArgumentConfig(argConfig, value);
	if (parsed === undefined) {
		return {
			type: "invalid-value",
			path: argConfig.path,
			expected: getExpectedValue(argConfig)
		};
	}
	const problem = setValue(config, argConfig.path, parsed, index);
	if (problem) return problem;
	return null;
};

/**
 * Gets expected value.