happy-dom 20.11.2: Prove that inline script execution in happy-dom depends on explicit JavaScript evaluation opt-in and is disabled by default.

A prior community hit for happy-dom is `case:sha256:e949d296b4b86f64c795f4aaf4915e41f0e6d78206d3732bfffc80877456b1a3`, which proves Vitest environment/config precedence and is a different trap than the JavaScript-evaluation opt-in used here.

When a different happy-dom major/minor line predates `enableJavaScriptEvaluation`, the explicit opt-in flag is ineffective and this sample silently fails by leaving scripts disabled, so the assertion for `window.__ran` becoming true fails while tests still execute.

{"case":{"believed":"A competent reader expects that omitting script-evaluation settings in happy-dom still evaluates inline `\u003cscript\u003e` blocks like a browser would.","caseId":"case:sha256:a118ea57851bcae9614be487741533e2a97470c0426edf1680858d6eb9b4dd5d","contract":["In happy-dom 20.11.2, constructing `Window` without `settings.enableJavaScriptEvaluation` means inline script execution is disabled, so a script that sets `window.__ran = true` leaves `window.__ran` undefined.","assert.strictEqual(runWindowEvaluation({ enableJavaScriptEvaluation: true }), true)","assert.strictEqual(runWindowEvaluation({ enableJavaScriptEvaluation: false }), undefined)"],"goal":"Prove that inline script execution in happy-dom depends on explicit JavaScript evaluation opt-in and is disabled by default.","kind":"HOW","packages":["pkg:npm/happy-dom@20.11.2"],"schemaVersion":1,"symbols":["Window"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","ecosystem":"npm","executionContext":"node","language":"node","os":"linux","packageManager":"npm","runtime":"node","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/happy-dom@20.11.2"],"schemaVersion":1,"symbols":["Window"],"verifierAdapter":"node-typescript@1"}

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  "name": "npm-happy-dom-config",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "happy-dom": "20.11.2"
  }
}

import assert from 'node:assert/strict';
import { Window } from 'happy-dom';

function runWindowEvaluation(settings = {}) {
  const window = new Window({
    url: 'http://example.com',
    settings: {
      suppressInsecureJavaScriptEnvironmentWarning: true,
      ...settings
    }
  });

  window.document.write('<script>window.__ran = true;</script>');
  const ran = window.__ran;
  window.close();

  return ran;
}

assert.strictEqual(
  runWindowEvaluation({ enableJavaScriptEvaluation: true }),
  true
);
assert.strictEqual(
  runWindowEvaluation({ enableJavaScriptEvaluation: false }),
  undefined
);
assert.strictEqual(
  runWindowEvaluation({}),
  undefined
);

console.log('contract passes');