Move to protobufjs in ts/groups.ts

ts/context/Bytes.ts

@@ -0,0 +1,57 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+/* eslint-disable class-methods-use-this */
+
+import { Buffer } from 'buffer';
+
+export class Bytes {
+  public fromBase64(value: string): Uint8Array {
+    return Buffer.from(value, 'base64');
+  }
+
+  public fromHex(value: string): Uint8Array {
+    return Buffer.from(value, 'hex');
+  }
+
+  // TODO(indutny): deprecate it
+  public fromBinary(value: string): Uint8Array {
+    return Buffer.from(value, 'binary');
+  }
+
+  public fromString(value: string): Uint8Array {
+    return Buffer.from(value);
+  }
+
+  public toBase64(data: Uint8Array): string {
+    return Buffer.from(data).toString('base64');
+  }
+
+  public toHex(data: Uint8Array): string {
+    return Buffer.from(data).toString('hex');
+  }
+
+  // TODO(indutny): deprecate it
+  public toBinary(data: Uint8Array): string {
+    return Buffer.from(data).toString('binary');
+  }
+
+  public toString(data: Uint8Array): string {
+    return Buffer.from(data).toString();
+  }
+
+  public concatenate(list: ReadonlyArray<Uint8Array>): Uint8Array {
+    return Buffer.concat(list);
+  }
+
+  public isEmpty(data: Uint8Array | null | undefined): boolean {
+    if (!data) {
+      return true;
+    }
+    return data.length === 0;
+  }
+
+  public isNotEmpty(data: Uint8Array | null | undefined): data is Uint8Array {
+    return !this.isEmpty(data);
+  }
+}