tweetnacl-ts/src/validate.ts

Port of TweetNaCl cryptographic library to TypeScript (and ES6)

export function validateBase64(s: string) {
    if (!/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$/.test(s)) {
        throw new TypeError('invalid base64 string');
    }
}

export function validateHex(s: string) {
    if (!/^(?:[A-Fa-f0-9]{2})+$/.test(s)) {
        throw new TypeError('invalid hex string');
    }
}