class-validator
typescript-runtime-type-benchmarks
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class-validator | typescript-runtime-type-benchmarks | |
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28 | 33 | |
10,386 | 540 | |
1.8% | - | |
9.3 | 9.8 | |
7 days ago | 7 days ago | |
TypeScript | TypeScript | |
MIT License | - |
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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.
class-validator
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[DDD] Tactical Design Patterns Part 3: Presentation/Infrastructure Layer
This is the request body when creating a new task. The IsString decorator provided by class-validator rejects all types other than strings, including undefined or null. The task name value object does not consider the possibility of values other than strings.
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Show HN: Graphweaver – Instant GraphQL API on Postgres, MySQL, SQLite and More
We add validation using https://github.com/typestack/class-validator.
I will make sure we get this documented.
- [Nestia] Boost up your NestJS server much faster and easier (maximum 20,000x faster)
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How can I declare, integrate a JSON (or similar type that is supposed to be data sent from a server) file into my Angular app, and use it;s data to display the array of Devices within it?
Also OP can check out class-transformer + class-validator if he want to properly instantiate objects and validate them with precise and verbose output of potential format errors. OP can even go the god tier way by setting up a custom RxJS operator that does that for him easily.
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NestJS GraphQL image upload into a S3 bucket
Start by installing the class-transformer and class-validator packages for dto validation (see more in the docs), sharp for image optimization, and the S3 client packages.
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NestJS vs. Ditsmod: auto-validation
The description of the request body model in NestJS is similar to the description of Ditsmod models, but NestJS uses decorators provided by the utility class-validator. In NestJS, it is customary to name the request body model with the ending *Dto (this is an abbreviation of Data transfer object):
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Is there any reason not to use typescript?
You could use Zod or Superstruct to validate the types of values, or use typestack/class-validator if it makes sense.
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I found 10,000x faster TypeScript validator library
Also, title of before article was I made 1,000x faster TypeScript validator library, but today's benchmark is showing that typescript-json is maximum 6,500x times faster. It's just because I added a new library class-validator in the benchmark and it is much slower than previous zod. Of course, I've continuously tuned the performance, but it just improved the performance about 2x times only.
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TypeScript-based REST API template to quickly bootstrap your next project
Hello, In the last month I built a REST API template in Typescript to quickly bootstrap new projects, I tried to use the most updated modules available, I've also included a "todo" sample just to showcase how all the things work together, the main modules that I've used are: - expressjs + tsoa that allows to easily generate the OpenAPI spec without any additional steps (just declare your controllers via typescript) - class-validator to validate body requests (this is also useful as the OpenAPI will be automatically generated based on the classes that you define) - Jest for testing, I've included also unit and integrations test samples with an in-memory database
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Validator in js
Package Feature Merit Demerit Link Zod TypeScript-first schema validation with static type inference Method chaining and easy to get ts type Newer package zod.dev joi This is almost same to zod Have many plugins Doesn't support static type inference https://github.com/sideway/joi Yup This is almost same to zod Have many plugins Missing some feature, function, deep object, promise... ... https://github.com/jquense/yup class-validator Validate class properties Have many features Code isn't clean https://github.com/typestack/class-validator ajv Validate by json scheme Enable to share schem to other languages Not supported typescript https://ajv.js.org/
typescript-runtime-type-benchmarks
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TypeScript please give us types
Has been heavily optimized, both in terms of its types and runtime performance. Even including the static parser, many types are about an order of magnitude more efficient than equivalent Zod. Early results show it as marginally faster than any validator currently published to typescript-runtime-type-benchmarks, not including more complex cases where (2) would give ArkType a much more significant advantage.
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What are some of the best libraries you cannot work without?
Zod is a bit of an underdog but it is not fast, AJV which is slightly more common can validate and generate types too but requires using JSON syntax, TypeBox offers familiar syntax to Zod while still being JSON syntax in the background.
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[AskTS] What do you think will be the future of runtime type checking?
First, they're not fast (runtime type checking benchmarks).
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Typescript really hits the middle ground between extremely rigid statically typed languages on one extreme and no types at all dynamic languages on another extreme. Best type system
Aha, so you're using a library in Java for this. You know about libraries in TS for this, there are plenty of them btw, but you don't use them because it's so easy. Express has `any` type for `req.body` because authors don't care about this either and it's so easy. And TypeScript is the one to blame in that you prefer to work with `any` type for incoming data rather than validating it.
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TypeBox: Runtime Type System Built on Industry Standards
It is so much faster than Zod that Zod basically doesn't show, https://moltar.github.io/typescript-runtime-type-benchmarks/ and according to bundlejs, https://bundlejs.com/?q=zod%2Czod%2C%40sinclair%2Ftypebox&treeshake=%5B*%5D%2C%5B%7B+default+%7D%5D%2C%5B*%5D&config=%7B%22analysis%22%3Atrue%7D, it is even smaller. I genuinely have no clue why Zod is this popular in 2023.
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TypeBox: Template Literals + Conditional Types at Runtime
TypeBox is a bit different to other libraries in this space where it's mostly intended to be used with a auxiliary JSON Schema validator. Although it provides a built in JSON Schema compiler (which is currently the fastest (not-AOT) runtime validator available for JavaScript today), it's equally intended to be used with validators like Ajv (or any other standards compliant validator)
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Introducing ArkType: The first isomorphic type system for TS/JS
I do plan to add some direct comparisons to https://github.com/moltar/typescript-runtime-type-benchmarks as well but haven't had a chance yet.
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Is using zod as the primary source of truth for Typescript types sensible/sustainable?
I think it's more of a case of the extremely low performance bar that's been set by the status quo (for even the simplest of validation structures). There's been a lot of focus on the TS type inference, and less on the runtime performance (which actually matters more as it does reduce operational costs). It probably wouldn't be such an issue if the performance was reasonable, but I mean here's the full breakdown https://moltar.github.io/typescript-runtime-type-benchmarks/.
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Best schema validator for intellisense performance?
I found a benchmark for runtime performance, but I haven't found any for intellisense/editor performance.
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TypeBox surpasses Joi, Yup and Zod as most downloaded NPM validation library
In terms of performance, TypeBox currently ranks 3rd in terms of overall performance benchmarks here, with 1st and 2nd place given to AOT solutions (ones that require TS compiler transforms). TypeBox (like Ajv) provides a JIT solution as well as a dynamic type checking solution for applications under code evaluation constraints.
What are some alternatives?
zod - TypeScript-first schema validation with static type inference
joi - The most powerful data validation library for JS [Moved to: https://github.com/hapijs/joi]
class-transformer - Decorator-based transformation, serialization, and deserialization between objects and classes.
TypeORM - ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.
ajv - The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)
io-ts - Runtime type system for IO decoding/encoding
typebox - Json Schema Type Builder with Static Type Resolution for TypeScript
FluentValidation - A popular .NET validation library for building strongly-typed validation rules.
openapi-typescript-validator - Generate typescript with ajv validation based on openapi schemas
schema-builder - A typescript JSON Schema library that creates a schema and its type at the same time
typescript-is
napi-rs - A framework for building compiled Node.js add-ons in Rust via Node-API