Function checkBooleanOption

lib/stdio/type.js:111–115

(value, optionName)

};

export const checkBooleanOption = (value, optionName) => {
	if (value !== undefined && typeof value !== 'boolean') {
		throw new TypeError(`The \`${optionName}\` option must use a boolean.`);
	}
};

const isGenerator = value => isAsyncGenerator(value) || isSyncGenerator(value);
export const isAsyncGenerator = value => Object.prototype.toString.call(value) === '[object AsyncGeneratorFunction]';