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webbureaucrat

from legacy to functional and very little in between.

Tagged “reasonml”

  1. Writing Service Workers in ReScript

    Does your SPA work fully offline? Would you like to define a caching strategy in an exhaustively type-safe way? If so, you might be interested in this Service Worker binding for ReScript (formerly BuckleScript / ReasonML). This article documents the binding by example, including two different caching strategies and a service worker registration example.


  2. Setting Up Webpack for ReScript

    As much as I strongly prefer ES6 modules, using them with ReScript (formerly BuckleScript / ReasonML) and ServiceWorkers just isn't practical right now. I'm writing this article so that I can easily grab the configuration the next time I need it. This is a beginner's guide because I am a webpack beginner, and, well, everyone is a ReScript beginner right now.


  3. Displaying Notifications in ReScript

    This article will serve to document and demonstrate the rescript-notifications npm package, a complete set of bindings for the JavaScript-compiling ReScript language (formerly BuckleScript/ReasonML). At the close of this article, the reader should be able to enable and display notifications in an entirely type safe and functional way.


  4. Writing Elm Ports in ReScript

    This is a post-rebrand update to my previous post, "How to Write Elm Ports in ReasonML." I rewrote the package in the new ReScript syntax so that people who aren't familiar with the old syntax can still read it. Recently I've published an npm package called res-elm and put it into production on a couple of projects. It's documented briefly by its README, but I think it deserves a full post. This post will walk through how to set up ports both into and out of an elm 0.19 project using ReScript.


  5. Parsing JSON in ReScript Part III: Getting to the Point

    After having established some requirements and some basic utilities, we're ready for the fun part: putting the pieces together. At the end of this post, we will have our working parser.


  6. Parsing JSON in ReScript Part II: Building Blocks

    This is the second in a series of articles on how to build one's own, general-purpose parsing library. After having established a few expectations in the previous post, we are ready to begin building our utilities for our library. Let's start with some highly generalized utilities for functional programming.


  7. Parsing JSON in ReScript Part I: Prerequisites and Requirements

    There are few things more satisfying than a slick, readable, and safe JSON parser. It's one of the joys of functional programming. Using a good JSON parsing pipeline can feel like magic. This series seeks to lift the veil and empower readers (and, importantly, my future self) to build their own customizable and extensible parsing libraries. This article, the first of several, will be a skimmable introduction to the subject as I see it.


  8. How to Upgrade from BuckleScript to ReScript

    I have a weakness: I have never seen an update I didn't want to adopt immediately. Betas? No thanks. Give me the nightly build. New major version of the Linux kernel? I'll just run the installation without stopping to grab my charger. So when BuckleScript announced a whole new language syntax (along with a rebrand to "ReScript"), I got excited and immediately wanted to transpile everything. This post will document the simple process step-by-step.


  9. ReScript: The Module or File Can't Be Found, Unabridged

    If you work with BuckleScript, now ReScript, you'll likely come across the common build error message, "The module or file $name can't be found" followed by a few helpful suggestions for how to properly install a ReScript module. It's a good error message, but I've found it underestimates me in my ability to get things wrong, especially if I'm the one who wrote the missing module to begin with. I'm going to write a guide while one of these problems is still fresh in my mind so that I have a checklist to go through the next time I get frustrated.


  10. How to Write Elm Ports in ReasonML

    Recently I've published an npm package called bs-elm-es6 and put it into production on a couple of projects. It's documented briefly by its README, but I think it deserves a full post. This post will walk through how to set up ports both into and out of an elm 0.19 project using BuckleScript 7. (If you're curious, I'm deferring decisions about the rebrand/new syntax until we get the new npm package.)


  11. Dynamic Options and Optional Parameters in ReasonML

    The next type I want to bind from the JavaScript ServiceWorker API is Cache. At first glance, Cache doesn't have any dependencies on any JavaScript interfaces we don't already have access to, but its methods do use dynamic JavaScript options parameters, and the way we deal with this in typed languages is to name and create new specialized types. In this post, I will implement types for these options and the functions that use them.


  12. ReasonML Journey Part IV: Publishing BuckleScript Packages on NPM

    In the previous post, we finished wrapping ExtendableEvent in ReasonML. In this post I will publish our type on npm.


  13. ReasonML Journey Part III: Generics, Promises, and ExtendableEvent.waitUntil()

    This post continues the quest of trying to recreate the JavaScript service worker class ExtendableEvent in ReasonML. In this post I will show how to extend the subtype of event to include ExtendableEvent's waitUntil method, which takes a generic Promise as a parameter.


  14. ReasonML Journey Part I: Getting Started with BuckleScript

    ReasonML is, at the time of this post, a very young language and, as such, very much underdocumented. It's also missing a lot of the JavaScript standard libraries. I see both of these things as an opportunity to contribute both to the foundational documentation and to the libraries that haven't been written yet. This blog series will serve mainly as a resource to me as an absolute beginner trying to retrace my steps, but I hope that someone else may someday find it useful as well.


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