Function isFileTypeAllowed

utils/upload.ts:1296–1305

(file: File)

}

export function isFileTypeAllowed(file: File): boolean {
    const allowed = getAllowedExtensions();
    if (!allowed) return true;

    const dotIndex = file.name.lastIndexOf(".");
    if (dotIndex < 1 || dotIndex === file.name.length - 1) return false;

    const ext = file.name.slice(dotIndex + 1).toLowerCase();
    return allowed.has(ext);
}

function getFilenameExtension(filename: string): string | undefined {
    const dotIndex = filename.lastIndexOf(".");