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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import * as base64 from "./base64.ts";
/* * Some variants allow or require omitting the padding '=' signs: * https://en.wikipedia.org/wiki/Base64#URL_applications * @param base64url */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 {  return addPaddingToBase64url(b64url).replace(/\-/g, "+").replace(/_/g, "/");}
function convertBase64ToBase64url(b64: string): string {  return b64.replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_");}
/** * Encodes a given Uint8Array into a base64url representation * @param uint8 */export function encode(uint8: Uint8Array): string {  return convertBase64ToBase64url(base64.encode(uint8));}
/** * Converts given base64url encoded data back to original * @param b64url */export function decode(b64url: string): Uint8Array {  return base64.decode(convertBase64urlToBase64(b64url));}