export function canEncode(extension: string): boolean { const supported = [ "mkv", "avi", "mp4", "wmv", "webm", "mov" ] const found = supported.find((item) => item === extension) return (found) ? true : false; } export function canExtract(extension: string): boolean { const supported = [ "mkv" ] const found = supported.find((item) => item === extension) return (found) ? true : false; } export function canConvert(extension: string): boolean { const supported = [ "ass", "srt", "vtt", "smi" ] const found = supported.find((item) => item === extension) return (found) ? true : false; }