polkadot-js/common

// Copyright 2017-2024 @polkadot/util-crypto authors & contributors
// SPDX-License-Identifier: Apache-2.0

import { base64 } from '@scure/base';

import { createDecode, createEncode, createIs, createValidate } from '../base32/helpers.js';

const config = {
  chars: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/',
  coder: base64,
  type: 'base64',
  withPadding: true
};

/**
 * @name base64Validate
 * @summary Validates a base64 value.
 * @description
 * Validates that the supplied value is valid base64
 */
export const base64Validate = /*#__PURE__*/ createValidate(config);

/**
 * @name isBase64
 * @description Checks if the input is in base64, returning true/false
 */
export const isBase64 = /*#__PURE__*/ createIs(base64Validate);

/**
 * @name base64Decode
 * @summary Decodes a base64 value.
 * @description
 * From the provided input, decode the base64 and return the result as an `Uint8Array`.
 */
export const base64Decode = /*#__PURE__*/ createDecode(config, base64Validate);

/**
 * @name base64Encode
 * @summary Creates a base64 value.
 * @description
 * From the provided input, create the base64 and return the result as a string.
 */
export const base64Encode = /*#__PURE__*/ createEncode(config);