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- import { base64 } from "./base64.js";
- const BASE64URL_REGEX = /^[A-Za-z0-9_-]*$/;
- export function normalize(text) {
- return text.replace(/[\n\r\t ]/g, "");
- }
- export function is(text) {
- return typeof text === "string" && BASE64URL_REGEX.test(normalize(text));
- }
- export function encode(data, _options) {
- return base64.encode(data).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/g, "");
- }
- export function decode(text, _options) {
- const normalized = normalize(text);
- if (!is(normalized)) {
- throw new TypeError("Input is not valid Base64Url text");
- }
- return base64.decode(base64.pad(normalized.replace(/-/g, "+").replace(/_/g, "/")));
- }
- export const base64url = { encode, decode, is, normalize };
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