feat: refactor plugin internals and stabilize isolation:none (#8)

* feat: optimize react testing runtime and add prettier

* fix: update test scripts

* chore: removed unused var and function

* Refactor plugin internals and harden isolation-none flow

* format: fix

* format: fix

Author: Lojhan

CHANGELOG.md

@@ -2,17 +2,15 @@
 
 ## [1.1.0](https://github.com/Lojhan/poku-react-testing/compare/v1.0.1...v1.1.0) (2026-03-31)
 
-
 ### Features
 
-* optimize react testing runtime and add prettier ([#6](https://github.com/Lojhan/poku-react-testing/issues/6)) ([424194b](https://github.com/Lojhan/poku-react-testing/commit/424194b2c5bdc5f8c3d3c7a41bc91b50d51dd38c))
+- optimize react testing runtime and add prettier ([#6](https://github.com/Lojhan/poku-react-testing/issues/6)) ([424194b](https://github.com/Lojhan/poku-react-testing/commit/424194b2c5bdc5f8c3d3c7a41bc91b50d51dd38c))
 
 ## [1.0.1](https://github.com/Lojhan/poku-react-testing/compare/v1.0.0...v1.0.1) (2026-03-31)
 
-
 ### Bug Fixes
 
-* add repository metadata required for npm provenance ([#4](https://github.com/Lojhan/poku-react-testing/issues/4)) ([f20b16a](https://github.com/Lojhan/poku-react-testing/commit/f20b16a9ab72bb957743c7739a926d0bfb851f68))
+- add repository metadata required for npm provenance ([#4](https://github.com/Lojhan/poku-react-testing/issues/4)) ([f20b16a](https://github.com/Lojhan/poku-react-testing/commit/f20b16a9ab72bb957743c7739a926d0bfb851f68))
 
 ## 1.0.0 (2026-03-31)
 

benchmark/REPORT.md

@@ -1,49 +1,49 @@
 # React Testing Framework Benchmark Report
 
-> Generated: Tue, 31 Mar 2026 21:00:50 GMT
+> Generated: Wed, 01 Apr 2026 12:41:50 GMT
 
 ## Environment
 
-| Property | Value |
-|---|---|
-| Node.js | v22.5.1 |
-| Platform | darwin 25.4.0 |
-| CPU | Apple M3 Pro |
-| CPU Cores | 12 |
-| Total RAM | 18.0 GB |
-| Runs/scenario | 7 (trim ±1) |
+| Property      | Value         |
+| ------------- | ------------- |
+| Node.js       | v22.5.1       |
+| Platform      | darwin 25.4.0 |
+| CPU           | Apple M3 Pro  |
+| CPU Cores     | 12            |
+| Total RAM     | 18.0 GB       |
+| Runs/scenario | 7 (trim ±1)   |
 
 ## Scenarios
 
 Each scenario runs the **same 9 React tests** across 5 test files:
 
-| Test File | Tests |
-|---|---|
-| 'counter.test.jsx' | 1 — stateful counter, event interaction |
-| 'hooks.test.jsx' | 2 — custom hook harness + `renderHook` |
-| 'lifecycle.test.jsx' | 2 — `rerender`, `unmount` + effect cleanup |
-| 'context.test.jsx' | 1 — `createContext` + wrapper injection |
-| 'concurrency.test.jsx' | 2 — React 19 `use()` + `useTransition` |
+| Test File              | Tests                                      |
+| ---------------------- | ------------------------------------------ |
+| 'counter.test.jsx'     | 1 — stateful counter, event interaction    |
+| 'hooks.test.jsx'       | 2 — custom hook harness + `renderHook`     |
+| 'lifecycle.test.jsx'   | 2 — `rerender`, `unmount` + effect cleanup |
+| 'context.test.jsx'     | 1 — `createContext` + wrapper injection    |
+| 'concurrency.test.jsx' | 2 — React 19 `use()` + `useTransition`     |
 
 ### Frameworks under test
 
-| Combination | DOM layer | Assertion style |
-|---|---|---|
-| poku + poku-react-testing | happy-dom | `assert.strictEqual` |
-| poku + poku-react-testing | jsdom | `assert.strictEqual` |
-| jest 29 + @testing-library/react | jsdom (jest-environment-jsdom) | `expect().toBe()` |
-| vitest 3 + @testing-library/react | jsdom | `expect().toBe()` |
-| vitest 3 + @testing-library/react | happy-dom | `expect().toBe()` |
+| Combination                       | DOM layer                      | Assertion style      |
+| --------------------------------- | ------------------------------ | -------------------- |
+| poku + poku-react-testing         | happy-dom                      | `assert.strictEqual` |
+| poku + poku-react-testing         | jsdom                          | `assert.strictEqual` |
+| jest 29 + @testing-library/react  | jsdom (jest-environment-jsdom) | `expect().toBe()`    |
+| vitest 3 + @testing-library/react | jsdom                          | `expect().toBe()`    |
+| vitest 3 + @testing-library/react | happy-dom                      | `expect().toBe()`    |
 
 ## Results
 
 | Scenario           | Mean   | Min    | Max    | Stdev  | Peak RSS | vs poku+happy-dom |
-|--------------------|--------|--------|--------|--------|----------|-------------------|
-| poku + happy-dom   | 1.073s | 0.996s | 1.230s | 0.085s | 163.3 MB | *(baseline)*      |
-| poku + jsdom       | 1.060s | 1.007s | 1.177s | 0.060s | 163.4 MB | -1%               |
-| jest + jsdom       | 0.859s | 0.779s | 0.929s | 0.050s | 206.2 MB | -20%              |
-| vitest + jsdom     | 0.964s | 0.950s | 0.987s | 0.017s | 148.0 MB | -10%              |
-| vitest + happy-dom | 0.838s | 0.812s | 0.864s | 0.021s | 116.3 MB | -22%              |
+| ------------------ | ------ | ------ | ------ | ------ | -------- | ----------------- |
+| poku + happy-dom   | 0.560s | 0.515s | 0.600s | 0.033s | 154.3 MB | _(baseline)_      |
+| poku + jsdom       | 0.444s | 0.429s | 0.451s | 0.008s | 157.1 MB | -21%              |
+| jest + jsdom       | 1.040s | 0.975s | 1.135s | 0.056s | 203.4 MB | +86%              |
+| vitest + jsdom     | 1.193s | 1.129s | 1.269s | 0.057s | 152.3 MB | +113%             |
+| vitest + happy-dom | 1.041s | 0.990s | 1.126s | 0.047s | 117.1 MB | +86%              |
 
 > **Wall-clock time** is measured with `performance.now()` around the child-process spawn.
 > **Peak RSS** is captured via `/usr/bin/time -l` on macOS (bytes → MB).
@@ -53,44 +53,44 @@ Each scenario runs the **same 9 React tests** across 5 test files:
 
 ### Overall ranking (mean wall-clock time)
 
-1. **vitest + happy-dom** — 0.838s
-2. **jest + jsdom** — 0.859s
-3. **vitest + jsdom** — 0.964s
-4. **poku + jsdom** — 1.060s
-5. **poku + happy-dom** — 1.073s
+1. **poku + jsdom** — 0.444s
+2. **poku + happy-dom** — 0.560s
+3. **jest + jsdom** — 1.040s
+4. **vitest + happy-dom** — 1.041s
+5. **vitest + jsdom** — 1.193s
 
 ### Speed comparison
 
-- poku+happy-dom vs jest+jsdom: jest is **-20% faster**
-- poku+happy-dom vs vitest+jsdom: vitest is **-10% faster**
-- jest+jsdom vs vitest+jsdom: vitest is **12% slower** than jest
+- poku+happy-dom vs jest+jsdom: jest is **86% slower**
+- poku+happy-dom vs vitest+jsdom: vitest is **113% slower**
+- jest+jsdom vs vitest+jsdom: vitest is **15% slower** than jest
 
 ### DOM adapter impact
 
-- **poku**: happy-dom vs jsdom — jsdom is **-1% faster**
+- **poku**: happy-dom vs jsdom — jsdom is **-21% faster**
 - **vitest**: happy-dom vs jsdom — jsdom is **15% slower**
 
 ### Memory footprint
 
-- **vitest + happy-dom**: 116.3 MB peak RSS
-- **vitest + jsdom**: 148.0 MB peak RSS
-- **poku + happy-dom**: 163.3 MB peak RSS
-- **poku + jsdom**: 163.4 MB peak RSS
-- **jest + jsdom**: 206.2 MB peak RSS
+- **vitest + happy-dom**: 117.1 MB peak RSS
+- **vitest + jsdom**: 152.3 MB peak RSS
+- **poku + happy-dom**: 154.3 MB peak RSS
+- **poku + jsdom**: 157.1 MB peak RSS
+- **jest + jsdom**: 203.4 MB peak RSS
 
 ### Consistency (lower stdev = more predictable)
 
-- **vitest + jsdom**: σ = 0.017s
-- **vitest + happy-dom**: σ = 0.021s
-- **jest + jsdom**: σ = 0.050s
-- **poku + jsdom**: σ = 0.060s
-- **poku + happy-dom**: σ = 0.085s
+- **poku + jsdom**: σ = 0.008s
+- **poku + happy-dom**: σ = 0.033s
+- **vitest + happy-dom**: σ = 0.047s
+- **jest + jsdom**: σ = 0.056s
+- **vitest + jsdom**: σ = 0.057s
 
 ## Key findings
 
-- **Fastest**: vitest + happy-dom — 0.838s mean
-- **Slowest**: poku + happy-dom — 1.073s mean
-- **Speed spread**: 28% difference between fastest and slowest
+- **Fastest**: poku + jsdom — 0.444s mean
+- **Slowest**: vitest + jsdom — 1.193s mean
+- **Speed spread**: 169% difference between fastest and slowest
 
 ### Interpretation
 
@@ -100,6 +100,7 @@ processes with minimal bootstrap — means cold-start overhead is proportional t
 files, not to the framework's own initialization.
 
 **jest** carries the heaviest startup cost due to:
+
 1. Babel transformation of every TSX file on first run (no persistent cache in this benchmark)
 2. 'jest-worker' process pool initialisation
 3. JSDOM environment setup per test file

benchmark/package-lock.json

@@ -1,9 +1,12 @@
 import { defineConfig } from 'poku';
 import { reactTestingPlugin } from 'poku-react-testing/plugin';
 
-const configuredDom = process.env.POKU_REACT_TEST_DOM;
-const dom = configuredDom === 'jsdom' ? 'jsdom' : 'happy-dom';
+const dom = process.env.POKU_REACT_TEST_DOM;
+if (!dom) {
+  throw new Error('POKU_REACT_TEST_DOM environment variable is not set');
+}
 
 export default defineConfig({
   plugins: [reactTestingPlugin({ dom })],
+  isolation: 'none',
 });

benchmark/poku.config.js

@@ -1,5 +1,5 @@
 {
-  "timestamp": "2026-03-31T21:00:50.386Z",
+  "timestamp": "2026-04-01T12:41:50.774Z",
   "system": {
     "nodeVersion": "v22.5.1",
     "platform": "darwin 25.4.0",
@@ -14,68 +14,68 @@
   "results": [
     {
       "label": "poku + happy-dom",
-      "mean": 1073.1924668,
-      "min": 995.5031250000002,
-      "max": 1229.6369170000003,
-      "stddev": 84.66710558647982,
-      "meanRss": 171232460.8,
-      "meanUserCpu": 4396,
-      "meanSysCpu": 1584,
+      "mean": 559.9537916000002,
+      "min": 515.060708,
+      "max": 599.9880840000001,
+      "stddev": 33.06234198220535,
+      "meanRss": 161808384,
+      "meanUserCpu": 672,
+      "meanSysCpu": 202,
       "runs": 7,
       "validRuns": 7,
       "failures": 0
     },
     {
       "label": "poku + jsdom",
-      "mean": 1060.1384749999997,
-      "min": 1007.1474579999995,
-      "max": 1176.5342500000006,
-      "stddev": 60.012456221527664,
-      "meanRss": 171294720,
-      "meanUserCpu": 3228,
-      "meanSysCpu": 1440,
+      "mean": 443.6319584000001,
+      "min": 428.5047089999998,
+      "max": 450.59829100000024,
+      "stddev": 7.9857833050707905,
+      "meanRss": 164767334.4,
+      "meanUserCpu": 432,
+      "meanSysCpu": 92,
       "runs": 7,
       "validRuns": 7,
       "failures": 0
     },
     {
       "label": "jest + jsdom",
-      "mean": 858.7310334000001,
-      "min": 778.734042,
-      "max": 929.1150420000013,
-      "stddev": 50.38267849622563,
-      "meanRss": 216186880,
-      "meanUserCpu": 778,
-      "meanSysCpu": 176,
+      "mean": 1040.1169332000002,
+      "min": 975.1540420000001,
+      "max": 1134.9154159999998,
+      "stddev": 56.06532298235639,
+      "meanRss": 213300019.2,
+      "meanUserCpu": 936,
+      "meanSysCpu": 228,
       "runs": 7,
       "validRuns": 7,
       "failures": 0
     },
     {
       "label": "vitest + jsdom",
-      "mean": 964.3196584000004,
-      "min": 949.5501660000009,
-      "max": 986.9945420000004,
-      "stddev": 16.60550682561403,
-      "meanRss": 155179417.6,
-      "meanUserCpu": 3336,
-      "meanSysCpu": 1102,
+      "mean": 1192.7835997999996,
+      "min": 1129.2755830000006,
+      "max": 1268.7202919999982,
+      "stddev": 56.83080807294834,
+      "meanRss": 159652249.6,
+      "meanUserCpu": 3798,
+      "meanSysCpu": 1380,
       "runs": 7,
       "validRuns": 7,
       "failures": 0
     },
     {
       "label": "vitest + happy-dom",
-      "mean": 837.8697498000001,
-      "min": 812.1916249999995,
-      "max": 864.1250409999993,
-      "stddev": 20.924101623413893,
-      "meanRss": 121916620.8,
-      "meanUserCpu": 2942,
-      "meanSysCpu": 1006,
+      "mean": 1041.3667920000007,
+      "min": 990.0950420000008,
+      "max": 1126.3293750000012,
+      "stddev": 47.26983715919258,
+      "meanRss": 122814464,
+      "meanUserCpu": 3346,
+      "meanSysCpu": 1156,
       "runs": 7,
       "validRuns": 7,
       "failures": 0
     }
   ]
-}
+}

benchmark/results.json

@@ -9,7 +9,7 @@ const ResourceView = ({ resource }) => {
   return <h2>{value}</h2>;
 };
 
-test('renders a resolved use() resource under Suspense', () => {
+test('renders a resolved use() resource under Suspense', async () => {
   const value = 'Loaded from use() resource';
   const resolvedResource = {
     status: 'fulfilled',
@@ -30,7 +30,7 @@ test('renders a resolved use() resource under Suspense', () => {
   );
 });
 
-await test('runs urgent and transition update pipeline', async () => {
+test('runs urgent and transition update pipeline', async () => {
   const TransitionPipeline = () => {
     const [urgentState, setUrgentState] = useState('idle');
     const [deferredState, setDeferredState] = useState('idle');

benchmark/tests/poku/concurrency.test.jsx

@@ -11,7 +11,7 @@ const ThemeLabel = () => {
   return <p>Theme: {theme}</p>;
 };
 
-test('injects context values via wrapper', () => {
+test('injects context values via wrapper', async () => {
   const ThemeWrapper = ({ children }) => (
     <ThemeContext.Provider value='dark'>{children}</ThemeContext.Provider>
   );

benchmark/tests/poku/context.test.jsx

@@ -17,7 +17,7 @@ const Counter = ({ initialCount = 0 }) => {
   );
 };
 
-test('renders and updates a React component', () => {
+test('renders and updates a React component', async () => {
   render(<Counter initialCount={1} />);
 
   assert.strictEqual(

benchmark/tests/poku/counter.test.jsx

@@ -32,7 +32,7 @@ const HookHarness = () => {
   );
 };
 
-test('tests custom hooks through a component harness', () => {
+test('tests custom hooks through a component harness', async () => {
   render(<HookHarness />);
 
   assert.strictEqual(
@@ -46,7 +46,7 @@ test('tests custom hooks through a component harness', () => {
   );
 });
 
-test('tests hook logic directly with renderHook', () => {
+test('tests hook logic directly with renderHook', async () => {
   const { result } = renderHook(({ initial }) => useToggle(initial), {
     initialProps: { initial: true },
   });