Eyepiece NPM | npm.io

Eyepiece 🔭

WORK-IN-PROGRESS !!!

Eyepiece is a simple JavaScript/TypeScript utility library inspired by functional optics that focuses on manipulating nested data within objects/arrays.

It can be used generally but was designed with Hyperapp usage in mind.

// TODO:

Here's an introductory example using TypeScript:

// introductory example thingy

Yeah But Why?

// TODO:

If we want to immutably update an object...

Installation

// TODO:

Guide

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API Reference

// TODO:

`get()`

`set()`

Since functions within a focus path will get executed many path construction possibilities.

Alternatives

Both shades and Optix are more feature-rich alternatives. However, Eyepiece is intentionally more narrow in scope. Originally, Eyepiece took some inspiration from shades both philosophically and syntactically. Nowadays Eyepiece also borrows from Optix.