just
ecma262
just | ecma262 | |
---|---|---|
12 | 22 | |
5,807 | 14,730 | |
- | 0.2% | |
4.1 | 9.0 | |
3 months ago | 8 days ago | |
JavaScript | HTML | |
MIT License | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
just
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🚀 The Fast, Accurate, JavaScript Objects Diffing & Patching Library
just-diff
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TC39: Add Object.groupBy and Map.groupBy
You can roll your own or use a utility library. A simple zero-dependency library would be something like just-group-by [1]. Although I now prefer remeda [2] as it seems to have the best typescript support, especially the strict variants such as `grouBy.strict`.
[1] https://github.com/angus-c/just#just-group-by
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No Lodash
Tree-shaking doesn't help much when the tree-shaken implementation is so bloated.
Here's the one you referenced, lodash.chunk: https://unpkg.com/lodash.chunk – 140 lines after removing comments and whitespace.
That's pretty small compared to a lot of the lodash utilities. Try spot-checking a few on unpkg.
I prefer angus's `just` utilities: https://github.com/angus-c/just
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Snap.js - A competitor to Lodash
I absolutely love this. When I need some Lodash alternative I'll usually reference angus-c/just but I am definitely bookmarking this for next time.
- [AskJS] Which utility libraries are in your opinion so good they are basicaly mandatory?
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[AskJS] Which JS libraries and packages are currently your favourites?
The just set of utility functions are really nice to use. https://github.com/angus-c/just
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A Typescript-first alternative to Lodash/Underscore
Just doesn't have everything but it's pretty good
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/svu - svultimate svelte svutilities
One of my favourite "libraries" are the "just" packages, where each part of the library is it's own simple package with zero dependencies (https://github.com/angus-c/just) so you essentially just npm install the specific thing you want - which is generally a single function.
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What is the best memoization library?
If the code should, as you say, be 5 lines, why take on a dependency at all? By doing so, you end up with a catch-all solution that does almost nothing other than JSON.stringify your args, which is extremely poorly optimized to handle many situations, e.g. one of your args is a primitive and the other is a large config object.
- Over 200 Malicious NPM Packages Caught Targeting Azure Developers
ecma262
- TC39: Add Object.groupBy and Map.groupBy
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The "well-known" Symbols in JavaScript
These aren't valid JavaScript (@@iterator would throw an error). They are actually internal Symbols used in JavaScript. They are used to implement features like iteration, instanceOf, and such internally. They actually might get removed or changed
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📦🔓Closures in JavaScript decoded
Note that in previous editions, the ECMAScript® Language Specification used the term "lexical environment" before it decided to rename it to "Environment Record" so you might encounter this term in other definitions and tutorials.
- Document.all Willful Violation
- ES2023 Candidate source code + specification
- ES2023 candidate source code + spec
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The Evolution of JavaScript
For a new specification to be written, you need two things, a_ technical committee_, and a standard. The standard specification for JavaScript is called ECMA-262, and the technical committee is Technical Committee-39(TC39).
- Why Async/Await Is More Than Just Syntactic Sugar
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Show HN: We are trying to (finally) get tail-calls into the WebAssembly standard
4. Proposed something else [ https://github.com/tc39/proposal-ptc-syntax ]
While apple is against Syntactic tail calls, they’re mainly just opposed to versions of it that would remove/unrequire the tail-call optimisation they already do: https://github.com/tc39/ecma262/issues/535
For the version of it that is backwards compatible, they wouldn’t need to do anything other than recognise it as valid syntax. Their main concern is that it "could add confusion with very little benefit."
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What happened to proper tail calls in JavaScript? (2021)
The spec for STC has a critique of PTC:
- performance
- developer tools
- Error.stack
- cross-realm tail calls
- developer intent
See: https://github.com/tc39/proposal-ptc-syntax#issues-with-ptc
Apple's 2016 response as to why they won't implement STC is here: https://github.com/tc39/ecma262/issues/535
- STC is part of the spec and will take too long to change.
- Now that they've implemented support for PTC, they don't want to regress web pages that rely on it.
- They don't want to discourage vendors from implementing PTC by agreeing to STC.
- They don't want to introduce confusion.
Some of these arguments about confusion and delays seem wrong hindsight, since on every point things would have been better if they'd just agreed to the compromise of STC.
- It would have been part of the spec years ago
- STC would have had a clear way for web pages to know when tail calls could be relied on (and PTC would have been optional)
- Other vendors didn't implement PTC in any case, despite no agreement on STC
- There's even more confusion as things are now
What are some alternatives?
You-Dont-Need-Lodash-Underscore - List of JavaScript methods which you can use natively + ESLint Plugin
proposal-pattern-matching - Pattern matching syntax for ECMAScript
dom-examples - Code examples that accompany various MDN DOM and Web API documentation pages
spec - WebAssembly specification, reference interpreter, and test suite.
uptime-kuma.
proposal-ptc-syntax - Discussion and specification for an explicit syntactic opt-in for Tail Calls.
lodash - A modern JavaScript utility library delivering modularity, performance, & extras.
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
yoha - A practical hand tracking engine.
io-ts - Runtime type system for IO decoding/encoding
svu - Svultimate Svelte(Kit) Svutilities
uwm-masters-thesis - My thesis for my Master's in Computer Science degree from the University of Wisconsin - Milwaukee.