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Configure TypeScript and Babel standalone to load separately from the bundle (via <script async>) #340

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Configure TypeScript and Babel standalone to load separately from the bundle (via <script async>) #340

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62 changes: 60 additions & 2 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -5,11 +5,69 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="icon" href="/favicon.ico" type="image/x-icon" sizes="16x16">
<title>tscircuit Snippets</title>

<!-- Load Prettier -->
<script async src="https://unpkg.com/[email protected]/standalone.js"></script>
<script async src="https://unpkg.com/[email protected]/parser-typescript.js"></script>

<!-- Load TypeScript Standalone from CDN -->
<script async src="https://cdnjs.cloudflare.com/ajax/libs/typescript/5.0.4/typescript.min.js"></script>

<!-- Load Babel Standalone from CDN -->
<script async src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/7.21.5/babel.min.js"></script>
</head>
<body>
<div id="root"></div>

<!-- Main script for your app -->
<script type="module" src="/src/main.tsx"></script>
<script async src="https://unpkg.com/[email protected]/standalone.js"></script>
<script async src="https://unpkg.com/[email protected]/parser-typescript.js"></script>

<script>
// Function to wait for TypeScript and Babel to load
function waitForLibraries() {
return new Promise((resolve, reject) => {
const checkInterval = setInterval(() => {
// Check if both TypeScript and Babel are loaded
if (typeof window.ts !== 'undefined' && typeof window.Babel !== 'undefined') {
clearInterval(checkInterval); // Stop checking once both are loaded
resolve(); // Resolve the promise once both are available
}
}, 100); // Check every 100ms if both are loaded
});
}

// When the page loads, we wait for TypeScript and Babel to be available
window.onload = async () => {
try {
// Wait until TypeScript and Babel are available
await waitForLibraries();
console.log('TypeScript and Babel are loaded!');

// Example usage of TypeScript in the browser
const tsCode = `
let message: string = "Hello from TypeScript!";
console.log(message);
`;

// Transpile TypeScript to JavaScript using TypeScript compiler
const jsCode = window.ts.transpile(tsCode);

// Create a new script tag to execute the transpiled JavaScript
const script = document.createElement('script');
script.textContent = jsCode;
document.body.appendChild(script); // Inject and execute the JavaScript

} catch (error) {
console.error('Failed to load TypeScript or Babel:', error);
}

// Debugging: Check if TypeScript and Babel are available
if (typeof window.ts !== 'undefined' && typeof window.Babel !== 'undefined') {
console.log("Both TypeScript and Babel are loaded successfully!");
} else {
console.log("Error: TypeScript and/or Babel are not loaded.");
}
};
</script>
</body>
</html>
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