ReScript Calculator

Learning ReScript with a practical example.

ReScript

The most non-JavaScript-way to write JavaScript.

ReScript is the language for folks who don't necessarily love JavaScript, but who still acknowledge its importance. - ReScript Introduction

Review

2021. 07.17

• No official DOM APIs. Only types.
• Immature VSCode extension. It asks me to rebuild every time I load each .res file.
• Documentations are great but still hard to figure out how to integrate ReScript into the existing projects.
• Unlike other superset languages, ReScript offers less syntax and compiles to human-readable, well-written, performant JavaScript. And here is a question. What is the purpose of human-readable artifacts? ReScript team says anyone who knows JavaScript can directly modify the outputs when there is an emergency situation. Doesn't make sense. ReScript should be a single source of truth, and loosing sync between the source and built one may cause a big problem.
• ReScript is not for experienced JavaScript programmers.
• ReScript team recommends to compile in-source. It's really messy.
• Too frequent rebrandings. Reason, BuckleScript, ReScript. Still too many bs prefix. It's confusing.

Installation

npm install

Dev

npm run re:dev

npm run dev

Run two scripts sequentially at the same time. You can use tools like concurrently, npm-run-all, or just use two shells.

Build

npm run build