TypeScript Online IDE
TypeScript with zero config.
Write TypeScript and run it directly — no tsconfig.json, no build step, no waiting for tsc. We use tsx for instant execution with full type support.
main.ts
Features
Why YaliCode for TypeScript
Instant execution
Runs via tsx — no compilation step. Write TypeScript, hit run, see results immediately.
Type checking
Monaco editor provides real-time IntelliSense, type errors, and autocompletion as you type.
Modern features
Full support for generics, decorators, enums, interfaces, and the latest TypeScript syntax.
Framework ready
Build typed React or Next.js apps with WebContainers. Full TypeScript support in templates.
Use cases
What you can build
Type-safe scriptsAPI prototypingReact + TypeScript appsAlgorithm practiceLibrary testing
main.ts
// Generic stack implementation
class Stack<T> {
private items: T[] = [];
push(item: T) { this.items.push(item); }
pop(): T | undefined { return this.items.pop(); }
peek(): T | undefined { return this.items.at(-1); }
}
const stack = new Stack<number>();
[10, 20, 30].forEach(n => stack.push(n));
console.log("Top:", stack.peek());
Output:
Top: 30
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YaliCode supports 24 languages and 14 frontend framework templates. Pick your stack.
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