jest-image-snapshot VS rescript-compiler

You can give a try about visual testing. I think about Cypress components and Cypress Image snapshot or Jest Image snapshot (not DOM testing)

puppeteer + jest-image-snapshot

A combination of https://github.com/americanexpress/jest-image-snapshot and whichever of https://www.npmjs.com/search?q=keywords:pdf%20to%20png renders your PDF the best should work.

We liked matcher functionality provided by jest-image-snapshot, so we just took this solution and adopted for jasmine and Karma.

Github repository of Jest-image-snapshot: https://github.com/americanexpress/jest-image-snapshot

Snapshot testing itself is a built-in feature of Jest, and when searching specifically for image snapshots, you'll quickly find jest-image-snapshot, which does great work comparing and updating image snapshots. It also provides convenience features like a base64 diff output, which allows us to view the diff from a CI environment (since the diff image file cannot be saved or viewed).

ReScript is a fully typed language with an easy to understand JS like syntax, blazing fast compiler, that compiles to JavaScript. You can easily drop it into an existing project, and there is even a way to generate TypeScript types if you want to add it to a TypeScript project!

If you’re a front-end developer, you should checkout ReScript[1], supposedly a JS-oriented successor of ReasonML and developed by the ReasonML team.

[1] https://rescript-lang.org/

ReScript is "Fast, Simple, Fully Typed JavaScript from the Future". What that means is that ReScript has a lightning fast compiler, an easy to learn JS like syntax, strong static types, with amazing features like pattern matching and variant types. Until 2020 it was called "BuckleScript" and is closely related to ReasonML.

As another commenter has already suggested, ReasonML has a lot of what you described here.

However, modern JS-oriented toolchain for ReasonML is called ReScript and you can learn more here: https://rescript-lang.org/

ReScript (before BuckleScript) https://rescript-lang.org/ is a functional language that can also use OOP. Ideal for Javascript and Typescript projects, React and servers. It integrates perfectly with Javascript and Typescript code https://rescript-lang.org/docs/react/latest/introduction

Thank you!

We invited Gabriel because we think what he's building is pretty cool. It showcases so much about EdgeDB: its type system, data model, query language, composability, introspection, etc.

I'm not a ReScript user myself. What I know is that it's a functional programming language somewhat heavily inspired by OCaml. Their website goes into details [1]

[1] https://rescript-lang.org/

You might want to look into ReScript (https://rescript-lang.org/). It has strong static typing with type inference, and it is very fast.

This is because a “Tagged Union”, another word for TypeScript’s Discriminated Union, is a way to “tag which one is in use right now… we check the tag to see”. Just like when you’re shopping and check the tag of a piece of clothing to see what the price is, what size it is, or what material it’s made out of. Languages like ReScript compile many of their Unions (called Variants) to JavaScript Objects that have a tag property.

ReScript is "Fast, Simple, Fully Typed JavaScript from the Future". Let's take a look at how we can add it to an existing React project.