Carl Hallén Jansson
Carl Hallén Jansson

Carl Hallén Jansson

Carl Hallén Jansson

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I am a web developer who writes about my process learning Web3.0, serverless, JAMstack, and general web development topics.

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Login to MetaMask with ethers

Dec 2, 20213 min read

Login to MetaMask with ethers Okay, this might seem really straight forward, but I actually had some problems figuring this out. I just started learning how to build dapps and found myself ripping my hair out because I couldn't figure out such a simp...

Set up Fauna GQL Upload with Fauna Dev

Mar 15, 20215 min read

I recently published v2.0.0 of Fauna GQL Upload, an npm package for managing FaunaDB resources inside your project, a sort infrastructure as code (IaC) tool. The new version added the possibility of setting custom endpoints for the FaunaDB driver and...

Reducing Lambda size when using googleapis module

Feb 23, 20213 min read

So this is going to be a short one. I was going to deploy a lambda function that made use of the googleapis package, but it was way too large. The problem As you probably know, your Lambda functions should be below 5 MB to get acceptable cold start t...

Generate HTML Emails with React on the Server

Dec 28, 20208 min read

This might seem strange and some questions probably popped up in your head. Why would you want to use JSX for emails? Can you actually render JSX on the server? Why JSX? So... JSX is really good for templating. You can simply do something like this: ...

Generate HTML Emails with React on the Server

Dark theme in Pure CSS

Nov 16, 20206 min read

Okay... making a dark theme in CSS is not difficult. The Pure CSS part mainly refers to not having to toggle the dark theme on your website. To actually make a dark theme toggle, you'd need to use some JS. There are also more ways to achieve a dark ...

Dark theme in Pure CSS

Skeleton Loader in Pure CSS

Nov 9, 20205 min read

As promised in the last article, I'll be making a skeleton loader in this one. What is a skeleton loader? There are other names for this type of loader, but I think Skeleton Loader is quite fitting. It is basically the skeleton version of a component...

Skeleton Loader in Pure CSS