Blog

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

Series

.NET Core Web API 36 Angular 31 JavaScript Basics 19 JavaScript Intermediate 18 JavaScript Advanced 16 TypeScript Basics 14 TypeScript Intermediate 14 TypeScript Advanced 12

14 posts found

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Frontend PART 13

TypeScript Enums, Namespaces and Parameter Properties: Syntax That Isn't Erasable

We examine numeric and string enums, const enum, namespaces and parameter properties through their compiled output, and see why they aren't erasable, erasableSyntaxOnly, and the as const alternative.

3 Nov 2026 8 min 2

Frontend PART 14

TypeScript Declaration Files: .d.ts, @types, declare and Global Augmentation

We look at what .d.ts files are, @types and DefinitelyTyped, writing your own declarations with declare module, ambient declarations, global augmentation with declare global, and generating .d.ts with declaration: true.

3 Nov 2026 8 min 2