How to use filename-reserved-regex - 3 common examples

const validFilename = string => {
	if (!string || string.length > 255) {
		return false;
	}

	if (filenameReservedRegex().test(string) || filenameReservedRegex.windowsNames().test(string)) {
		return false;
	}

	if (/^\.\.?$/.test(string)) {
		return false;
	}

	return true;
};

const replacement = options.replacement === undefined ? '!' : options.replacement;

	if (filenameReservedRegex().test(replacement) && reControlChars.test(replacement)) {
		throw new Error('Replacement string cannot contain reserved filename characters');
	}

	string = string.replace(filenameReservedRegex(), replacement);
	string = string.replace(reControlChars, replacement);
	string = string.replace(reRelativePath, replacement);

	if (replacement.length > 0) {
		string = trimRepeated(string, replacement);
		string = string.length > 1 ? stripOuter(string, replacement) : string;
	}

	string = filenameReservedRegex.windowsNames().test(string) ? string + replacement : string;
	string = string.slice(0, typeof options.maxLength === 'number' ? options.maxLength : MAX_FILENAME_LENGTH);

	return string;
};

export const validFileName = name => {
  return name.replace(fileNameRex(), '').replace(fileNameRex.windowsNames(), '')
}