immutable-js
htm
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immutable-js | htm | |
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38 | 42 | |
32,863 | 8,554 | |
0.1% | - | |
7.0 | 0.0 | |
10 days ago | 3 months ago | |
TypeScript | JavaScript | |
MIT License | Apache License 2.0 |
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immutable-js
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Yet another introduction to Functional Programming
immutable for JavaScript.
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Imutability, react and typescrip: how to do it the clean way?
Check out Object.freeze. There's also Immutable.js for working with immutable data.
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How To Scale Your React Applications
Use immutability to manage state updates When updating state in your React application, it's important to ensure that you are not mutating the original state object. Instead, you should create a new copy of the state object with the updated values. Immutability makes it easier to manage state updates and ensures that the updates are performed in a predictable and safe manner. Libraries like Immutable.js provide a set of functions that simplify working with immutable data in React applications.
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Is it possible to strongly type properties of class dynamically added in the constructor?
We're wanting to get rid of immutable so I'm trying to replicate what it is about the Record functionality and types that allow this dynamic property access to work. After pulling my hair out looking through the [email protected] type definitions and the actual code, to me it looks like the types are just kind of lying about what's going on ... and it's just working. Does anyone have any ideas how I can replicate this dynamic property access with strong typings?
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Functional immutable game state
The Immutable.js README has a much more complete description of immutability and why you might want to use the library. Also worth mentioning that Immer is an alternative which is a bit easier to get started with.
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"console.log" Sometimes Print Wrong Data
Examples: immutable-js Immer
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Immutable Collections should be Your Default
I can't speak to C# and Java, but the suggestion in this post: ImmutableJS already uses Persistent data structures. (It's the second sentence of their introduction)
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How do I type reduce when Im reducing an array to count elements?
Avoiding mutation is just never modifiyng an object, ever. There are tons of implementations of this pattern, notably immutable.js (https://immutable-js.com/), Redux is also an example of this philosophy.
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Alan Perlis and the Evolution of Programming Languages
JavaScript is most programers' first introduction to map, filter, and reduce. Easy lambdas made those higher-order functions a staple of a lot of JS code.
Meanwhile, immutable.js[0] is at 10 million downloads per week and rising.
I would add that it's not just the ease of use of lambdas, but the fact that in JavaScript functions really are first class citizens. Most of the other widely used languages that people start on have lambda functions added in as a bit of a hack and only treat some functions as real values.
[0] https://www.npmjs.com/package/immutable
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immutable-js VS riux - a user suggested alternative
2 projects | 12 Aug 2022
htm
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VanJS: A 0.9KB JavaScript UI framework
The preact team also dislikes transpiling jsx so they've developed an alternative using tagged template literals: https://github.com/developit/htm
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React SSR web-server from scratch
So getting this to work without bundler magic is very hard. It's not surprising why NextJS is investing in a bundler. Though one thing that really sticks out is how much complexity we add for just miniscule dev ergonomics. Not using JSX and using something like htm would make all this easier (removing the bundler entirely), it's a lot of overhead to avoid a couple of quotes. React should really have a tagged-template mode. Also all of this is indirection is actually bad for dev ergonomics too! One of the reasons I did this is because I'm absolutely sick of magic caches and sorting through code that's been crushed by a bundler into something I don't recognize and can't easily debug. While we can't get rid of this completely (ts/jsx) this preserves the module import graph completely on the client-side making it easy to find things as you are working and preserving line numbers. This obviously is not useful for a production build and there's a lot of work that would need to go in to support both modes over the same code, but it's depressing no tools really work like this for local development.
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HTML Web Components
You can also do JSX and skip the build step with preact + htm : https://github.com/developit/htm#example
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Service Worker Templating Language (SWTL)
While I was able to achieve this fairly easily, the developer experience of manually stitching strings together wasnt great. Being myself a fan of buildless libraries, such as htm and lit-html, I figured I'd try to take a stab at implementing a DSL for component-like templating in Service Workers myself, called Service Worker Templating Language (SWTL), here's what it looks like:
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Gaseous - Yet Another Games Manager
I would however highly recommend https://github.com/developit/htm
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Create and Hydrate HTML with HTM
I thought the same thing, but apparently "HTM" is a JSX like javascript string template representation of HTML, and it can be found here: https://github.com/developit/htm
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Anyone using React from just a CDN, barbarian style?
If you're going to do a no-build approach, assume modern JS (so you don't have to transpile the JS syntax). Also, you can use https://github.com/developit/htm as a nearly-identical equivalent to JSX syntax, also without transpiling.
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Simple Modern JavaScript Using JavaScript Modules and Import Maps
This seems like a case of caring way too much about something that's hardly very different. JSX versus tagged template strings can be incredibly similar to one another.
The examples in this article are using vanilla template strings to author raw html, but that only misses a couple of nicities JSX has. There are tagged template string libraries like htm[1] that do include some of the few nicities JSX has, but which are actually compatible with the official language.
[1] https://github.com/developit/htm
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A few programming language features I’d like to see
The first one exists in JavaScript and is called Tagged Template Literals. I agree with the author that its a nice feature. It's the perfect construct to use for prepared SQL statements, LINQ-style queries, or reimplementing a JSX-like syntax (see HTM https://github.com/developit/htm).
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Using React without JSX == no build
There is however a library that is closer to JSX (HTML-like feel) but yet does not require a build step. htm. HTM uses tagged templates to leverage template literal as native Javascript template strings. If you have not played with tagged templates, I encourage you to check this out, it's a quite powerful feature, that has recently become a part of Javascript.
What are some alternatives?
Immer - Create the next immutable state by mutating the current one
jsx - The JSX specification is a XML-like syntax extension to ECMAScript.
mori - ClojureScript's persistent data structures and supporting API from the comfort of vanilla JavaScript
Preact - ⚛️ Fast 3kB React alternative with the same modern API. Components & Virtual DOM.
ramda - :ram: Practical functional Javascript
esbuild-plugin-alias - esbuild plugin for path aliases
lodash - A modern JavaScript utility library delivering modularity, performance, & extras.
babel-plugin-react-html-attrs - Babel plugin which transforms HTML and SVG attributes on JSX host elements into React-compatible attributes
RxJS
vim-jsx-pretty - :flashlight: [Vim script] JSX and TSX syntax pretty highlighting for vim.
immutability-helper - mutate a copy of data without changing the original source
lit - Lit is a simple library for building fast, lightweight web components.