Initial rebrand: @polkadot -> @pezkuwi (14 packages)

- Package namespace: @polkadot/* -> @pezkuwi/*
- Repository: polkadot-js/common -> pezkuwichain/pezkuwi-common
- Author: Pezkuwi Team <team@pezkuwichain.io>

Core packages:
- @pezkuwi/util (utilities)
- @pezkuwi/util-crypto (crypto primitives)
- @pezkuwi/keyring (account management)
- @pezkuwi/networks (chain metadata)
- @pezkuwi/hw-ledger (Ledger hardware wallet)
- @pezkuwi/x-* (10 polyfill packages)

Total: 14 packages
Upstream: polkadot-js/common v14.0.1

packages/util/src/test/performance.ts

@@ -0,0 +1,92 @@
+// Copyright 2017-2025 @polkadot/util authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+/// <reference types="@polkadot/dev-test/globals.d.ts" />
+
+/* global it, expect */
+
+import { formatDecimal, formatNumber, stringify } from '../index.js';
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+type ExecFn = (...params: any[]) => unknown;
+
+const NUM_PAD = 16;
+const PRE_PAD = 32;
+
+function loop (exec: ExecFn, count: number, inputs: readonly unknown[][]): [number, unknown[]] {
+  const start = performance.now();
+  const results = new Array<unknown>(inputs.length);
+
+  for (let i = 0; i < count; i++) {
+    const result = exec(...inputs[i % inputs.length]);
+
+    if (i < inputs.length) {
+      results[i] = result;
+    }
+  }
+
+  return [performance.now() - start, results];
+}
+
+export function formatFixed (value: number): string {
+  const [a, b] = value.toFixed(2).split('.');
+
+  return [formatDecimal(a), b].join('.');
+}
+
+export function formatOps (count: number, time: number): string {
+  const micro = (time * 1000) / count;
+  const ops = 1_000_000 / micro;
+
+  return `
+${formatFixed(ops).padStart(NUM_PAD + PRE_PAD + 1)} ops/s
+${formatFixed(micro).padStart(NUM_PAD + PRE_PAD + 1)} μs/op`;
+}
+
+export function perf (name: string, count: number, inputs: readonly unknown[][], exec: ExecFn, withLog?: boolean): void {
+  const test = process.env['GITHUB_REPOSITORY']
+    ? it.skip
+    : it;
+
+  test(`performance: ${name}`, (): void => {
+    const [time, results] = loop(exec, count, inputs);
+
+    console.error(`
+performance run for ${name} completed with ${formatNumber(count)} iterations.
+
+${`${name}:`.padStart(PRE_PAD)} ${time.toFixed(2).padStart(NUM_PAD)} ms${formatOps(count, time)}
+`);
+
+    if (withLog) {
+      console.log(results);
+    }
+  });
+}
+
+export function perfCmp (name: string, [first, second]: [string, string], count: number, inputs: readonly unknown[][], exec: ExecFn): void {
+  const test = process.env['GITHUB_REPOSITORY']
+    ? it.skip
+    : it;
+
+  test(`performance: ${name}`, (): void => {
+    const [[t1, r1], [t2, r2]] = [false, true].map((flag) =>
+      loop(exec, count, inputs.map((values) =>
+        [...values, flag]
+      ))
+    );
+
+    console.error(`
+performance run for ${name} completed with ${formatNumber(count)} iterations.
+
+${`${first}:`.padStart(PRE_PAD)} ${t1.toFixed(2).padStart(NUM_PAD)} ms ${t1 < t2 ? '(fastest)' : `(slowest, ${(t1 / t2).toFixed(2)}x)`}${formatOps(count, t1)}
+
+${`${second}:`.padStart(PRE_PAD)} ${t2.toFixed(2).padStart(NUM_PAD)} ms ${t1 > t2 ? '(fastest)' : `(slowest, ${(t2 / t1).toFixed(2)}x)`}${formatOps(count, t2)}
+`);
+
+    expect(
+      r1.filter((_, i) =>
+        stringify(r1[i]) !== stringify(r2[i])
+      )
+    ).toHaveLength(0);
+  });
+}