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Top 23 TypeScript Decorator Projects
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Project mention: How to Validate a Number with Specific Decimal Places in TypeScript? | dev.to | 2025-05-04
class-validator is a powerful library that allows you to apply constraints and validations on class properties. It’s beneficial in various scenarios, especially for validating user inputs in your applications. Using decorators, you can easily express validation rules, enabling your code to be more readable and maintainable.
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Take GraphQL as an example—REST APIs have a similar challenge, often using something like OpenAPI as the "schema." If you want your code to be the source of truth, you can use something like TypeGraphQL, which generates the GraphQL schema based on decorators in your classes. On the other hand, you can use the reference GraphQL server implementation (graphql-js) with raw Schema Definition Files as your contract—then generate TypeScript types using something like GraphQL Codegen.
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Project mention: Stop Spaghetti Code! How Clean Architecture Saves Next.js Projects | dev.to | 2025-05-02
For connecting layers we uses DI(dependency-injection) by tsyringe.
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Ts.ED
:triangular_ruler: Ts.ED is a Node.js and TypeScript framework on top of Express to write your application with TypeScript (or ES6). It provides a lot of decorators and guideline to make your code more readable and less error-prone. ⭐️ Star to support our work!
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Netanel Basal Explains new and more intermediate concepts hands-on.
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injection-js
Dependency injection library for JavaScript and TypeScript in 5.1K. It is an extraction of the Angular's ReflectiveInjector which means that it's well designed, feature complete, fast, reliable and well tested.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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ioc
:unicorn: lightweight (<1kb) inversion of control javascript library for dependency injection written in typescript (by owja)
Project mention: ioc VS vorarbeiter - a user suggested alternative | libhunt.com/r/owja/ioc | 2025-02-02 -
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awesome-typescript-examples
✨ Awesome TypeScript Examples with complete show cases of how to take advantage of the language potential.
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fastify-resty
⚔️ Declarative NodeJS web framework with REST API route auto-generation, DI, and decorators, build on top of Fastify and TypeScript.
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ts-jackson
A typescript library to deserialize and serialize json into classes. You can use different path pattern to resolve deeply nested structures. Every path pattern provided by lodash/get|set object is supported. Check out src/examples as a reference.
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lemondi
🍋 LemonDI is a decorator-based Dependency Injection (DI) framework for TypeScript 💉. By leveraging decorators, it simplifies the setup and management of application components, allowing developers to easily create and manage complex applications.
Project mention: Typescript deserves a better dependency injection framework 💉 | dev.to | 2025-01-19What I'm trying to achieve with LemonDI is to move beyond the limitations of reflect-metadata and take full advantage of TypeScript’s type system, making dependency injection in TypeScript more powerful, flexible, and type-safe.
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react-decorated-text
Unstyled React component to apply multiple text highlight/decorations within a larger body of text.
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
TypeScript Decorators discussion
TypeScript Decorators related posts
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How to Validate a Number with Specific Decimal Places in TypeScript?
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Typescript deserves a better dependency injection framework 💉
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Writing a Node.js and Express app with decorators based routing and DI
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NestJS + class-validator
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Migrating From until-destroy To Angular takeUntilDestroyed
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DRY Principle in Your AWS SAM Application with Middlewares
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[Nestia] Boost up your NestJS server much faster and easier (maximum 20,000x faster)
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A note from our sponsor - Stream
getstream.io | 9 Jul 2025
Index
What are some of the best open-source Decorator projects in TypeScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | class-validator | 11,460 |
| 2 | TypeGraphQL | 8,086 |
| 3 | tsyringe | 5,556 |
| 4 | Ts.ED | 2,984 |
| 5 | sequelize-typescript | 2,817 |
| 6 | until-destroy | 1,751 |
| 7 | injection-js | 1,248 |
| 8 | discordx | 689 |
| 9 | rxweb | 401 |
| 10 | vue-facing-decorator | 390 |
| 11 | ioc | 302 |
| 12 | utils-decorators | 228 |
| 13 | awesome-typescript-examples | 186 |
| 14 | fastify-resty | 91 |
| 15 | meta-controller | 30 |
| 16 | ts-jackson | 27 |
| 17 | TypeManager.TS | 26 |
| 18 | react-decorate-form | 19 |
| 19 | nestjs-custom-injector | 11 |
| 20 | lemondi | 9 |
| 21 | decotix | 7 |
| 22 | react-decorated-text | 5 |
| 23 | node-decorators | 4 |
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