Blog

Mert Özen's blog posts on software development, backend, frontend, and DevOps.

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Angular 31 JavaScript Basics 19 JavaScript Intermediate 18 JavaScript Advanced 16 TypeScript Basics 14 TypeScript Intermediate 14 TypeScript Advanced 12

2 posts found #async-await

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Frontend PART 10

Asynchronous Code in TypeScript: Typing Promise, async and fetch Responses

We look at Promise<T> and async return types, why a fetch response is any, runtime validation with unknown and hand-written type guards, and the types of Promise.all and allSettled.

3 Nov 2026 10 min 0

Frontend PART 10

JavaScript async/await: Readable Async Code, Error Handling and Waiting in Parallel

We see why async functions always return promises, how await waits without freezing the page, catching errors with try/catch, sequential versus parallel waiting, the await-in-a-loop trap and top-level await.

3 Nov 2026 8 min 4