import type { Uint8Array_ } from "./_types.ts";
export type { Uint8Array_ };
/**
 * Convert data into a base64url-encoded string.
 *
 * @see {@link https://www.rfc-editor.org/rfc/rfc4648.html#section-5}
 *
 * @param data The data to encode.
 * @returns The base64url-encoded string.
 *
 * @example Usage
 * ```ts
 * import { encodeBase64Url } from "base64url.ts";
 * import { assertEquals } from "../assert/mod.ts";
 *
 * assertEquals(encodeBase64Url("foobar"), "Zm9vYmFy");
 * ```
 */
export declare function encodeBase64Url(
  data: ArrayBuffer | Uint8Array | string,
): string;
/**
 * Decodes a given base64url-encoded string.
 *
 * @see {@link https://www.rfc-editor.org/rfc/rfc4648.html#section-5}
 *
 * @param b64url The base64url-encoded string to decode.
 * @returns The decoded data.
 *
 * @example Usage
 * ```ts
 * import { decodeBase64Url } from "base64url.ts";
 * import { assertEquals } from "../assert/mod.ts";
 *
 * assertEquals(
 *   decodeBase64Url("Zm9vYmFy"),
 *   new TextEncoder().encode("foobar")
 * );
 * ```
 */
export declare function decodeBase64Url(b64url: string): Uint8Array_;