guywaldman / bs-rebel

A toolkit for collections for bsb-native and bsb aimed at bundle size and performance

bs-rebel

Rebel is a toolkit for collection APIs that work with both bsb-native and bsb.

When you're aiming to write libraries with BuckleScript you're often made to choose between using convenient APIs that only work when compiling to JS, like Js.Array or to include more bs-platform/lib code, like Array or Belt.

Think of Rebel as a standard library wrapper. It aims to use JS built-ins as often as possible, but falls back to using the BuckleScript standard library on native.

(Its name comes from "Re" as in "Reason" and "bel" as in "belt")

Getting Started

Install the library from npm:

yarn add bs-rebel
# or for npm
npm install --save bs-rebel

And add bs-rebel to your bsconfig.json

{
  "name": "<your name>",
  "version": "0.1.0",
  "sources": ["src"],
  "bsc-flags": ["-bs-super-errors"],
  "bs-dependencies": [
+    "bs-rebel"
  ]
}

All of Rebel's module are namespaced as Rebel, so for instance to access the MutableQueue module use: Rebel.MutableQueue

Supported APIs

MutableQueue

See Belt.MutableQueue for this module's signature.

In JS, this module uses externals to mirror as many functions from the Belt module as possible. The only functions that don't completely compile away (but are rather small) are reduce, reduceU, and transfer.

It also adds an addMany function that does compile away, but isn't part of the standard Belt.MutableQueue module.

MutableStack

See Belt.MutableStack for this module's signature.

In JS, this module uses externals to mirror as many functions from the Belt module as possible. The only functions that don't completely compile away (but are rather small) are isEmpty and top.

It does not implement dynamicPopIterU and dynamicPopIter.

Array

See Rebel_types.re for this module's signature. Unfortunately there are no auto-generated docs yet.

This module slightly diverges from Array, Js.Array, and Belt.Array. It tries to match the implementation of the JS Array methods as closely as possible. However, there are some in-place modification methods that are not implemented in Belt.Array and are thus not included in Rebel.Array.

Other methods like filter and removeCount are present though.

The JS externals that don't compile away completely are:

• set (as opposed to setUnsafe which compiles away)
• reverse (as opposed to reverseInPlace which compiles away)
• remove (as opposed to removeInPlace which compiles away)
• removeCount (as opposed to removeCountInPlace which compiles away)
• shuffle
• shuffleInPlace
• make
• set
• includes

Some JS-only methods are for completeness' sake still included in Rebel.Array.Js, but they won't be available during native compilation!