import * as base64 from "./base64.ts";
export function addPaddingToBase64url(base64url: string): string { if (base64url.length % 4 === 2) return base64url + "=="; if (base64url.length % 4 === 3) return base64url + "="; if (base64url.length % 4 === 1) { throw new TypeError("Illegal base64url string!"); } return base64url;}
function convertBase64urlToBase64(b64url: string): string { if (!/^[-_A-Z0-9]*?={0,2}$/i.test(b64url)) { throw new TypeError("Failed to decode base64url: invalid character"); } return addPaddingToBase64url(b64url).replace(/\-/g, "+").replace(/_/g, "/");}
function convertBase64ToBase64url(b64: string): string { return b64.replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_");}
export function encode(data: ArrayBuffer | string): string { return convertBase64ToBase64url(base64.encode(data));}
export function decode(b64url: string): Uint8Array { return base64.decode(convertBase64urlToBase64(b64url));}