Base64 without Buffer (#891)

packages/util-crypto/src/base64/decode.ts

@@ -1,7 +1,7 @@
 // Copyright 2017-2021 @polkadot/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { bufferToU8a } from '@polkadot/util';
+import base64 from 'base64-js';
 
 import { base64Validate } from './validate';
 
@@ -14,5 +14,5 @@ import { base64Validate } from './validate';
 export function base64Decode (value: string): Uint8Array {
   base64Validate(value);
 
-  return bufferToU8a(Buffer.from(value, 'base64'));
+  return base64.toByteArray(value);
 }

packages/util-crypto/src/base64/encode.ts

@@ -1,7 +1,9 @@
 // Copyright 2017-2021 @polkadot/util-crypto authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import { u8aToBuffer, u8aToU8a } from '@polkadot/util';
+import base64 from 'base64-js';
+
+import { u8aToU8a } from '@polkadot/util';
 
 /**
  * @name base64Encode
@@ -10,5 +12,5 @@ import { u8aToBuffer, u8aToU8a } from '@polkadot/util';
  * From the provided input, create the base64 and return the result as a string.
  */
 export function base64Encode (value: Uint8Array | string | Buffer | number[]): string {
-  return u8aToBuffer(u8aToU8a(value)).toString('base64');
+  return base64.fromByteArray(u8aToU8a(value));
 }