Check if a value is base32 encoded

JavaScript version
const isBase32 = (value) => value.length % 8 === 0 && /^[A-Z2-7]+=*$/.test(value);
TypeScript version
const isBase32 = (value: string): boolean => value.length % 8 === 0 && /^[A-Z2-7]+=*$/.test(value);