proposal-record-tuple
typescript-is
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proposal-record-tuple | typescript-is | |
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73 | 9 | |
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4 months ago | 9 months ago | |
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- | MIT License |
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proposal-record-tuple
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Union, intersection, difference, and more are coming to JavaScript Sets
relevant issue, which is at the crux of this problem: https://github.com/tc39/proposal-record-tuple/issues/387
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The Everything NPM Package
There are still so many basic things that aren't in the JS stdlib, though. A good example is Map - if you need to use a tuple of two values as a key, you're SOL because there's no way to customize key comparisons. Hopefully we'll get https://tc39.es/proposal-record-tuple/ eventually, but meanwhile languages ranging from C++ to Java to Python have had some sensible way to do this for over 20 years now.
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Deep Cloning Objects in JavaScript, the Modern Way
If you’re reaching for structuredClone, what you really want is native immutable Record and Tuple syntax, and the companion “deep path properties” syntax which allows for efficient and ergonomic immutable updates:
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Cool language features that Rust is missing?
It will be called "record" in JavaScript which will swing the popularity back the other way I guess (currently a language proposal)
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Why doesn't TypeScript properly type Object.keys?
I suspect considering the strong desire to maintain consistency with JavaScript, we will eventually see something that when the Record proposal passes through tc39
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ES2023 features list!
I hope the Record and Tuple proposal makes it through
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[AskJS] Is JavaScript missing some built-in methods?
Record and tuple is at stage 2
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[AskJS] Which utility libraries are in your opinion so good they are basicaly mandatory?
Can't wait until we get records and tuples and you won't have to resort to shenanigans like this just to check if data is equal to other data
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Pipe Operator (|>) For JavaScript
I hope Records & Tuples[0] land before this does. It would have meaningful and far reaching positive effects for the language, without much controversy. Like most of these things, it takes about 5-7 years for it to permeate through enough of the engines to be meaningfully useful in the day to day of web developers (node / deno typically 12-18 months tops). It would drastically speed up existing code once wide adoption is gained though.
I don't think the Pipe Operator would be as useful in comparison
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Which Language in your opinion is well designed?
You might be interested in the Stage 2 Tuples and Records proposal. It's one of the proposals I'm most excited about, but there will be interesting discussions on how TypeScript will integrate those into their type system.
typescript-is
- Good bye "typescript-is" (ancestor of "typia", 20,000x faster validator)
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Typing for JSON Payloads
I'll throw https://github.com/woutervh-/typescript-is in the mix as well.
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Handling json input in an express app
I'm a fan of typescript-is. Provides both compile time and run time validations
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What can I *use* Rust for?
For what it's worth, thanks to TypeScript transformers (a feature baked into the compiler), one can create a transformer library that verifies an object is valid for any TypeScript type and conveys that information to the typechecker. And indeed, it's already been made. It allows to parse unknown into a given T. This is nice, because one can generate a JSON schema out of a TS type, for other languages/codebases to integrate safely.
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TypeScript runtime type-checking - designed for simple use, through to enforcing API payload schema
Then there's also typescript-is, which is pretty neat because it converts actual compile-time type definitions to runtime type checks, so it doesn't require changing the type definitions.
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JSON Schema === Runtime Type System for TypeScript
typescript-is. This uses a compile-time transformer to generate code for type-checking. You'll need to use ttypescript instead of typescript to compile your code (I recommend setting this up with ts-patch). It won't work if your build pipeline is actually using something like esbuild or Babel to transpile TS->JS.
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How an Anti-TypeScript “JavaScript developer” like me became a TypeScript fan
If you're not using a bunch of generics, check out typescript-is [1]. It takes little work to get it setup, but it generates run time type checks for you. I understand why typescript decided to not add this functionality to the core of the language, but it's starting to feel like the largest missing piece of typescript is a built-in way to generate run-time type-checks for user-defined types from just the type definition.
The happy medium we've found with that module is using the runtime type-check on anything "unsafe" to bless the result using typescript-is's equals functionality, but still allowing programmers to use casting with a comment justifying its necessity. For us our list of unsafe is results pulled from the db, anything parsed from JSON, and incoming request bodies (which can be a special case of parsing from JSON, but not always).
What are some alternatives?
runtypes - Runtime validation for static types
class-transformer - Decorator-based transformation, serialization, and deserialization between objects and classes.
class-validator - Decorator-based property validation for classes.
zod - TypeScript-first schema validation with static type inference
typebox - Json Schema Type Builder with Static Type Resolution for TypeScript
ts-node - TypeScript execution and REPL for node.js
ajv - The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)
Immer - Create the next immutable state by mutating the current one
typescript-eslint - :sparkles: Monorepo for all the tooling which enables ESLint to support TypeScript
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
typescript-json-schema - Generate json-schema from your Typescript sources