---
title: "Discussion on \"Typescript Type Narrowing And Assertions\" | Hashnode"
description: "Discussion on \"Typescript Type Narrowing And Assertions\". A guide to better type safety"
url: "https://hashnode.com/posts/typescript-type-narrowing-and-assertions/682308daa21dc7ea6d7bc40b"
---

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# [Typescript Type Narrowing And Assertions](https://articles.dotmh.dev/typescript-type-narrowing-and-assertions?utm_source=hashnode&utm_medium=feed)

A guide to better type safety

May 13, 2025 · 8 min read · articles.dotmh.dev  
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-   [#typescript](https://hashnode.com/tag/typescript)
-   [#typesafety](https://hashnode.com/tag/typesafety)
-   [#assertion](https://hashnode.com/tag/assertion)

## Written by

[Martin Haynes](https://hashnode.com/@dotmh)

@dotmh · UK

  
[View profile](https://hashnode.com/@dotmh)

Full Stack Javascript and Typescript Developer and Web Designer

I am a Platform Lead Engineer with over 17 years of experience. I have worked in a variety of industries, providing technical and design work and technical leadership.

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