neverthrow
fp-ts
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neverthrow | fp-ts | |
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16 | 96 | |
2,399 | 10,386 | |
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5.3 | 7.5 | |
1 day ago | 7 days ago | |
TypeScript | TypeScript | |
MIT License | MIT License |
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neverthrow
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Error Handling Patterns
Very timely, was just trying to understand how to improve error handling with typescript recently and came across neverthrow (https://github.com/supermacro/neverthrow) which looks promising…
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Ask HN: What is the “proper” way to do error-handling in TypeScript?
On my team we use Rust-style Result/Option types for any unrecoverable exceptions.
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The gotcha of unhandled promise rejections
I was happy when Promise became available, but in retrospect I'd wish we would have skipped ahead and gotten Observable (e.g: https://rxjs.dev/) instead to enable more powerful functionality and composition etc.
In Typescript dealing with rejection is also painful since rejection reasons can't be guaranteed to be Error even when you always take care of that. And it can't help you guarantee that you're handling all types of errors thrown. For that purpose I'm thinking of using https://github.com/supermacro/neverthrow#readme or https://swan-io.github.io/boxed.
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How has learning Rust been a benefit to you in other programming areas?
I highly recommend the neverthrow library for bringing Result to Typescript.
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How to know if a function throws in Typescript?
What do you think of neverthrow?
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ts-results - a lightweight result wrapper to exhibit success/failure instead of using/throwing exceptions.
I use https://github.com/supermacro/neverthrow for this
- Why doesn't typescript have a throws type to annotate functions that can throw an error?
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what's the recommended way to handle error in TS?
I use Neverthrow. Same idea, concurrent projects...
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I created a package that adds Rust-like features to TypeScript
You might also be interested in neverthrow https://github.com/supermacro/neverthrow
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Simple and maintainable error-handling in TypeScript
It's very easy to build your own versions of the above error handling yourself, and in fact, I'd recommend it as a learning exercise if you want to become more familiar with TypeScript. But of course, there are many packages out there to help you. Some examples — in no particular order — include, purify-ts, fp-ts, and neverthrow. You’ll notice that a couple of those examples are functional programming libraries, this is because errors can be well-modelled with monads.
fp-ts
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Type-Safe Printf() in TypeScript
While I certainly agree, I've found that this is often an indication of too-complex an architecture, and a fundamental re-think being necessary. I've had projects that depend on [fp-ts], which end up incredibly generic-heavy, but still make it entirely through a typecheck(not build- typescript's just worse at that than other tools like esbuild) in seconds-at-worse.
Obviously depends on your organization/project/application, but I do like these things as complexity-smells.
[fp-ts]: https://gcanti.github.io/fp-ts/
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Introducing fp-utils a functional utility library for Deno / Node
Unlike more comprehensive functional libraries like fp-ts, each module can be imported and resolved separately. If you just need options, simply add the option module and you're good to go.
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Blog post: graphs and monads with Typescript
While it's quite abstract, I believe it may be useful to those of you who is interested to learn more about functional programming [in Typescript] and also get more intuition on diverse programming ideas. I use fp-ts as a functional programming library there.
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Functional Programming Library for Golang by IBM
The library for TypeScript that this is influenced by is here:
https://github.com/gcanti/fp-ts
Interesting how both languages with this library converge to a similar syntax, due to heavy use of functions.
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Is Scala worth learning in 2023?
Learn something that pays the bill first - nowadays it's Golang/Rust react/typescript. Then you can try some pure fp libs like fp-ts and fp-core.rs, and look through existing scala cats docs. If you'll feel bad about it - that's totally fine and expectable, fp takes a paradigm shift and not that many dev able to shift their brains way of thought due to basic psychological rigidity) (inability to change habits and to modify concepts/attitudes once developed). And that's purely a staffing and management issue - folks hired randoms out of the blue, and called 'em a team.
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Application Bootstrapping with fp-ts
fp-ts, a library that caters to functional programming in TypeScript, comes with some micro-abstractions that already solve a few of our needs.
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Error Handling Patterns
looks like more ergonomic/focused version of fp-ts[1]
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To`class` or not to `class`?
The approach of checked errors is making a comeback. See Swift, Rust, Kotlin + Arrow.kt, and several takes on it in TypeScript: purify, fp-ts, etc.
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For Production Users: Haskell in an age of Rust and Python
Yeah, TypeScript is shockingly good for a language that is so compatible with JavaScript. For example fp-ts. The main problem with TypeScript is pervasive mutability and side-effects.
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Why I use Typescript nominal types [3via series part 3]
Back at my last job I was lucky enough to stumble upon some pretty awesome colleagues thanks to which I found even greater depths in Typescript which cemented the love even more. We used FP-TS to rewrite a legacy Feathers.js application and I learned many principles I later applied to my own full-stack "framework".
What are some alternatives?
effect - A fully-fledged functional effect system for TypeScript with a rich standard library
ramda - :ram: Practical functional Javascript
ts-results - A typescript implementation of Rust's Result object.
proposal-pattern-matching - Pattern matching syntax for ECMAScript
purescript - A strongly-typed language that compiles to JavaScript
io-ts - Runtime type system for IO decoding/encoding
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
immutable-js - Immutable persistent data collections for Javascript which increase efficiency and simplicity.
oxide.ts - Rust's Option<T> and Result<T, E>, implemented for TypeScript.
eslint-plugin-functional - ESLint rules to disable mutation and promote fp in JavaScript and TypeScript.
zod - TypeScript-first schema validation with static type inference
ts-toolbelt - 👷 TypeScript's largest type utility library