feat: wrap public key in a class

web3.js/test/publickey.test.js

@@ -0,0 +1,51 @@
+// @flow
+import {PublicKey} from '../src/publickey';
+
+test('invalid', () => {
+  expect(() => {
+    new PublicKey([
+      3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    ]);
+  }).toThrow();
+
+  expect(() => {
+    new PublicKey('0x300000000000000000000000000000000000000000000000000000000000000000000');
+  }).toThrow();
+
+  expect(() => {
+    new PublicKey('135693854574979916511997248057056142015550763280047535983739356259273198796800000');
+  }).toThrow();
+});
+
+test('equals', () => {
+  const arrayKey = new PublicKey([
+    3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  ]);
+  const hexKey = new PublicKey('0x300000000000000000000000000000000000000000000000000000000000000');
+  const decimalKey = new PublicKey('1356938545749799165119972480570561420155507632800475359837393562592731987968');
+
+  expect(arrayKey.equals(hexKey)).toBeTruthy();
+  expect(arrayKey.equals(decimalKey)).toBeTruthy();
+});
+
+test('isPublicKey', () => {
+  const key = new PublicKey('0x100000000000000000000000000000000000000000000000000000000000000');
+  expect(PublicKey.isPublicKey(key)).toBeTruthy();
+  expect(PublicKey.isPublicKey({})).toBeFalsy();
+});
+
+test('toBase58', () => {
+  const key = new PublicKey('0x300000000000000000000000000000000000000000000000000000000000000');
+  expect(key.toBase58()).toBe('CiDwVBFgWV9E5MvXWoLgnEgn2hK7rJikbvfWavzAQz3');
+});
+
+test('toBuffer', () => {
+  const key = new PublicKey('0x300000000000000000000000000000000000000000000000000000000000000');
+  expect(key.toBuffer()).toHaveLength(32);
+  expect(key.toBase58()).toBe('CiDwVBFgWV9E5MvXWoLgnEgn2hK7rJikbvfWavzAQz3');
+
+  const key2 = new PublicKey('0x000000000000000000000000000000000000000000000000000000000000000');
+  expect(key2.toBuffer()).toHaveLength(32);
+  expect(key2.toBase58()).toBe('11111111111111111111111111111111');
+});
+