import filenameReservedRegex, {windowsReservedNameRegex} from 'filename-reserved-regex'; export default function isValidFilename(string) { if (!string || string.length > 255) { return false; } if (filenameReservedRegex().test(string) || windowsReservedNameRegex().test(string)) { return false; } if (string === '.' || string === '..') { return false; } return true; }