Initial rebrand: @polkadot -> @pezkuwi (3 packages)

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

Packages:
- @pezkuwi/dev (build tools, linting, CI scripts)
- @pezkuwi/dev-test (test runner)
- @pezkuwi/dev-ts (TypeScript build)

Upstream: polkadot-js/dev v0.83.3

packages/dev/src/rootJs/index.ts

@@ -0,0 +1,53 @@
+// Copyright 2017-2025 @polkadot/dev authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+/** This should appear as-is in the output with: 1. extension added, 2. augmented.d.ts correct */
+import './augmented.js';
+
+/** This import should appear as-in in the ouput (cjs without asserts) */
+import testJson from '@pezkuwi/dev/rootJs/testJson.json' assert { type: 'json' };
+
+/** Double double work, i.e. re-exports */
+export { Clazz } from './Clazz.js';
+
+/** Function to ensure that BigInt does not have the Babel Math.pow() transform */
+export function bigIntExp (): bigint {
+  // 123_456n * 137_858_491_849n
+  return 123_456_789n * (13n ** 10n);
+}
+
+/** Function to ensure that dynamic imports work */
+export async function dynamic (a: number, b: number): Promise<number> {
+  // NOTE we go via this path so it points to the same location in both ESM
+  // and CJS output (a './dynamic' import would be different otherwise)
+  const { sum } = await import('@polkadot/dev/rootJs/dynamic.mjs');
+
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-return
+  return sum(a, b);
+}
+
+/** Function to ensure we have json correctly imported */
+export function json (): string {
+  return testJson.test.json;
+}
+
+/** Check support for the ?? operator */
+export function jsOpExp (a?: number): number {
+  const defaults = {
+    a: 42,
+    b: 43,
+    c: 44
+  };
+
+  return a ?? defaults.a;
+}
+
+/** This is an actual check to ensure PURE is all-happy */
+export const pureOpExp = /*#__PURE__*/ jsOpExp();
+
+const fooA = 1;
+const fooB = 2;
+const fooC = 3;
+const fooD = 4;
+
+export { fooA, fooB, fooC, fooD };