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Ivan Sevilla

Hi! I'm a JavaScript developer. I like to create web products and write things that I think are interesting.

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April 22, 2022

TypeScript - Avoid Errors Using Unknown Type

It's common to use any type in typescript when you don't know or you are not sure about the correct type to use. In this post I'll recommend you to use unkown type and explain why is a better approach

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September 15, 2021

How Test Works in JavaScript

Is difficult to become an expert in something if you don't know how really works under the hood. So, in this post, I'll show you how assertions libraries and testing frameworks work in JavaScript meanwhile we build a little one.