$ npm install ts-toolbelt
๐ฉ All the types you need for TypeScript
Explore the docs ยป
๐ฎ View Demo
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๐ Report Bug
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๐ฉ Request Feature
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๐ค Ask Questions
ts-toolbelt brings new capabilities to TypeScript with a collection of more than 200 tested types. This makes it the largest, and most reliable type collection out there. On a higher level, it abstracts the complexity & knowledge you would need to properly type your software - you can stay focused.
Its goal is to improve type correctness while adding a whole new set of features to TypeScript. It uses the type system itself for TypeScript to compute more complex types. In other words, its API exposes types that trade CPU & RAM for higher type safety.
You'll find all the types you can ever need in this single and well organized place.
Here's some of the most useful features:
TIP
If you don't find the type you are looking for, you are welcome to open a feature request!
Lowest TypeScript support starts at v3.5
npm install typescript@^3.6.0 --save-dev
For best results, add this to your tsconfig.json
// Optional, recommended
{
"compilerOptions": {
// ...
"strict": true
}
}
npm install ts-toolbelt --save
import {Object} from 'ts-toolbelt'
// Check the docs below for more
// Merge two `object` together
type merge = Object.MergeUp<{name: string}, {age?: number}>
TIP
You can also grab the demo over here
The project is organized around TypeScript's main concepts:
Any | Boolean | Class | Function | Iteration | Number |
Object | Object.P | String | Tuple | Union | Test |
TIP
match the type kind you need to operate on with the above categories
The documentation is complete but needs more examples. So feel free to ask for examples, and I will update the docs.
There are many ways to import the types into your project:
Explicit
import {Any, Boolean, Class, Function, Iteration, Number, Object, String, Tuple, Union} from 'ts-toolbelt'
Compact
import {A, B, C, F, I, N, O, S, T, U} from 'ts-toolbelt'
Portable
import tb from 'ts-toolbelt'
If you're interested to learn how the internals work, this tutorial will get you on track to start writing your own types.
Access older docs at https://pirix-gh.github.io/ts-toolbelt/version/
In this wiki, you'll find some extra resources for your learning & understanding.
It is incremental and it will be completed on demand, you can ask for this below.
Are you missing something? Participate to the open-wiki by posting your questions right here.
Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated. There are many ways to contribute to the project:
Fork the project
Clone your fork
Create a pr/feature branch
git checkout -b pr/CoolFeature
Commit your changes
You must follow the conventional commit to be able to commit
git commit -m 'feat(name): Added this CoolFeature'
Push your changes
npm run release -- --no-tags
Open a pull request
The money will be transparently split with an issue's assignees.
To run the lint
& type
tests, simply run:
npm test
Want to test your own types? Let's get started:
import {Number, Test} from 'ts-toolbelt'
const {checks, check} = Test
checks([
check<Number.Plus<'1', '30'>, '31', Test.Pass>(),
check<Number.Plus<'5', '-3'>, '2', Test.Pass>(),
])
TIP
Place it in a file that won't be executed, it's just for TypeScript to test types
The releases are done with Travis CI in stages & whenever a branch or PR is pushed:
npm test
If you wrote tests & would like your project to be tested too, please open an issue.
The project is maintained to adapt to the constant changes of TypeScript:
ts-toolbelt | typescript |
---|---|
4.x.x | ^3.6.x |
2.x.x | ^3.5.x |
3.x.x | ^3.5.x |
1.x.x | ~3.5.x |
Major version numbers will upgrade whenever TypeScript had breaking changes (it happened that TS had breaking changes on minor versions). Otherwise, the release versions will naturally follow the semantic versioning.
Available as part of the Tidelift Subscription.
The maintainers of ts-toolbelt
and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.
Sponsored issues have higher priority over non-critical issues.
You can either request a new feature or a bug fix then fund it.
# performance is checked manually with
npx tsc --noEmit --extendedDiagnostics
Many, many thanks to all the contributors and:
eledoc
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