Showing 343 open source projects for "type it"

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  • 1
    type-fest

    type-fest

    A collection of essential TypeScript types

    type-fest is a TypeScript utility types library that offers a curated, battle-tested suite of type definitions and type transformations that aren’t included in the TypeScript standard library. It provides types like Except, Merge, LiteralUnion, Writable, Promisable, PartialDeep, JsonObject, and many others that solve everyday typing needs in complex TypeScript codebases.
    Downloads: 2 This Week
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  • 2
    type-challenges

    type-challenges

    Collection of TypeScript type challenges with online judge

    type-challenges is a massive set of TypeScript type-level puzzles that turn the compiler into a playground for metaprogramming. Each challenge is a miniature kata where you implement types that transform other types—parsing strings, inferring tuples, mapping unions—without writing any runtime code. Problems are arranged from warm-ups to brain-twisters, letting developers build intuition about distributive conditional types, inference in extends, variance, and other corner cases of the type system. ...
    Downloads: 0 This Week
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  • 3
    next international

    next international

    Type-safe internationalization (i18n) for Next.js

    Type-safe internationalization (i18n) for Next.js.
    Downloads: 1 This Week
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  • 4
    anti-slop

    anti-slop

    Opinionated Oxlint rules for rejecting low-evidence TypeScript

    Anti-slop is an opinionated Oxlint rule set for rejecting low-evidence TypeScript and JavaScript patterns. It is designed to be copied into a repository and customized rather than consumed as a fixed npm dependency. Its rules target practices such as chained type assertions, unsafe dictionary types, broad object parameters, ad hoc runtime type checks, module mocking, and contracts that return unknown. Type assertions can be required to include a safety comment explaining the checked invariant. An included agent skill can copy the plugin, install Oxlint dependencies, merge configuration, and validate the setup. ...
    Downloads: 4 This Week
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  • 5
    ts-blank-space

    ts-blank-space

    A small, fast, pure JavaScript type-stripper

    ts-blank-space is a fast type-stripping compiler that converts TypeScript to JavaScript. It supports a modern subset of TypeScript by erasing the types and replacing them with whitespace. That's it. It is not a type checker and does not perform any other code transformations. The underlying technique can improve build performance and simplify development. The implementation is pure TypeScript.
    Downloads: 3 This Week
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  • 6
    Pothos GraphQL

    Pothos GraphQL

    Pothos GraphQL is library for creating GraphQL schemas in typescript

    ...It makes building graphql schemas in typescript easy, fast and enjoyable. The core of Pothos adds 0 overhead at runtime, and has graphql as its only dependency. Pothos is the most type-safe way to build GraphQL schemas in typescript, and by leveraging type inference and typescript's powerful type system Pothos requires very few manual type definitions and no code generation. Pothos has a unique and powerful plugin system that makes every plugin feel like its features are built into the core library. Plugins can extend almost any part of the API by adding new options or methods that can take full advantage of the Pothos type system. ...
    Downloads: 0 This Week
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  • 7
    actionlint

    actionlint

    Static checker for GitHub Actions workflow files

    ...It analyzes workflow YAML to catch syntax mistakes, invalid keys, expression errors, incorrect action inputs, and workflow configuration problems before they break CI. The tool also performs strong type checks for GitHub Actions expressions, which helps detect nonexistent properties and type mismatches. It can validate reusable workflows, workflow calls, glob syntax, runner labels, cron syntax, and job dependencies. actionlint also integrates with ShellCheck and pyflakes to inspect scripts written inside run: blocks. It is especially useful for developers and teams that rely heavily on GitHub Actions and want faster, more reliable workflow feedback.
    Downloads: 11 This Week
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  • 8
    cast

    cast

    safe and easy casting from one type to another in Go

    ...Especially when dealing with interface{} or dynamic/reflect-heavy code, it becomes cumbersome to assert types or convert values reliably; cast addresses that by offering a suite of functions to convert from any input to the target type with predictable behaviour. Rather than relying purely on raw type assertions, it offers ToInt, ToString, ToBool, ToTime, etc., and their “error-returning” counterparts like ToIntE. It is particularly useful when dealing with data from YAML, TOML, JSON or other formats where the type can be uncertain. The design choice is to avoid guessing about conversions: e.g., only a string strictly representing an integer can convert to int. ...
    Downloads: 2 This Week
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  • 9
    Valibot

    Valibot

    Modular and type safe schema library for validating structural data

    Valibot is a modular and type-safe schema library for validating structural data. It provides developers with tools to define and enforce data schemas, ensuring data integrity and consistency across applications.​
    Downloads: 0 This Week
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  • 10
    React Router

    React Router

    Declarative routing for React

    ...It enables robust routing experiences across React versions. It supports advanced features in React 19. You can use it maximally as a React framework or minimally as a library with your own architecture. First‑class type safety with automatic type generation for route params and data. It is designed to facilitate migration from React 18 to React 19 with non‑breaking upgrades
    Downloads: 2 This Week
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  • 11
    ArkType

    ArkType

    TypeScript's 1:1 validator, optimized from editor to runtime

    ArkType is a high-performance runtime type validation library for TypeScript. It offers a 1:1 validator optimized from editor to runtime, enabling developers to define and enforce complex type constraints seamlessly.​
    Downloads: 1 This Week
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  • 12
    KMongo

    KMongo

    [deprecated] KMongo - a Kotlin toolkit for Mongo

    KMongo was created in 2016, when there was no official MongoDB Kotlin driver. KMongo features are available via Kotlin extensions - you use transparently the core MongoDB java driver API (both sync and reactive streams (ie async) drivers are supported).
    Downloads: 1 This Week
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  • 13
    Beam

    Beam

    A type-safe, non-TH Haskell SQL library and ORM

    Beam is a Haskell interface to relational databases. Beam uses the Haskell type system to verify that queries are type-safe before sending them to the database server. Queries are written in a straightforward, natural monadic syntax. Combinators are provided for all standard SQL92 features, and a significant subset of SQL99, SQL2003, and SQL2008 features. Beam is standards-compliant but not naive. We recognize that different database backends provide different guarantees, syntaxes, and advantages. ...
    Downloads: 3 This Week
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  • 14
    The Agda standard library

    The Agda standard library

    The Agda standard library

    The standard library aims to contain all the tools needed to write both programs and proofs easily. While we always try and write efficient code, we prioritize ease of proof over type-checking and normalization performance. If computational performance is important to you, then perhaps try agda-prelude instead. Agda is a dependently typed programming language. It is an extension of Martin-Löf’s type theory and is the latest in the tradition of languages developed in the programming logic group at Chalmers. Other languages in this tradition are Alf, Alfa, Agda 1, Cayenne. ...
    Downloads: 4 This Week
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  • 15
    Shapeless

    Shapeless

    Generic programming for Scala

    Shapeless is a powerful generic programming library for Scala, enabling compile-time abstraction and manipulation of types. It provides features such as HLists (heterogenous lists), generic derivation of type class instances, dependent types, and polymorphic functions—allowing developers to write boilerplate-free, type-safe code.
    Downloads: 0 This Week
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  • 16
    OCaml

    OCaml

    The core OCaml system: compilers, runtime system, base libraries

    OCaml is a general-purpose, industrial-strength programming language with an emphasis on expressiveness and safety. OCaml’s powerful type system means more bugs are caught at compile-time, and large, complex codebases are easier to maintain. This makes it a good language for running critical code. At the same time, sophisticated inference makes the type system unobtrusive, creating a smooth developer experience. OCaml has two compilers. One is a bytecode compiler that generates small, portable executables and is very fast. ...
    Downloads: 7 This Week
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  • 17
    env

    env

    A simple and zero-dependencies library to parse environment variables

    ...The downside is that if you do need time in another format, you'll need to create your own type. By default, slice types will split the environment value on ,; you can change this behavior by setting the envSeparator tag. If you set the envExpand tag, environment variables (either in ${var} or $var format) in the string will be replaced according with the actual value of the variable.
    Downloads: 9 This Week
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  • 18
    Scala 2

    Scala 2

    Scala 2 compiler and standard library

    Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries. Scastie is Scala + sbt in your browser! You can use any version of Scala, or even alternate backends such as Dotty, Scala.js, Scala Native, and Typelevel Scala. You can use any published library. You can save and...
    Downloads: 6 This Week
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  • 19
    CppSharp

    CppSharp

    Tools and libraries to glue C/C++ APIs to high-level languages

    ...Such an API can be used to consume an existing native library in your managed code or add managed scripting support to a native codebase. The supported target languages at present are C# and C++/CLI. It can also be used as a library to parse native code into a syntax tree with a rich declaration and type information model. Generates the glue binding code from a syntax tree of the native code. Provides APIs for parsing of C/C++ source code into a syntax tree. Mirrors the Clang's C/C++ AST and type system classes in C# APIs.
    Downloads: 2 This Week
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  • 20
    OpenAPI TypeScript Codegen

    OpenAPI TypeScript Codegen

    NodeJS library that generates Typescript or Javascript clients

    OpenAPI TypeScript Codegen is a tool that generates TypeScript clients from OpenAPI specifications, facilitating type-safe API interactions in TypeScript applications.
    Downloads: 3 This Week
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  • 21
    konform

    konform

    Portable validations for Kotlin

    Portable validations for Kotlin. Kotest provides various matches for use with Konform. They can be used in your tests to assert that a given object is validated successfully or fails validation with specific error messages.
    Downloads: 4 This Week
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  • 22
    Compose Destinations

    Compose Destinations

    Annotation processing library for type-safe Jetpack Compose navigation

    A KSP library that processes annotations and generates code that uses Official Jetpack Compose Navigation under the hood. It hides the complex, non-type-safe and boilerplate code you would have to write otherwise. No need to learn a whole new framework to navigate - most APIs are either the same as with the Jetpack Components or inspired by them.
    Downloads: 0 This Week
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  • 23
    Embedded Template Library (ETL)

    Embedded Template Library (ETL)

    Embedded Template Library

    C++ is a great language to use for embedded applications and templates are a powerful aspect. The standard library can offer a great deal of well-tested functionality, but there are some parts of the standard library that do not fit well with deterministic behavior and limited resource requirements. These limitations usually preclude the use of dynamically allocated memory and containers with open-ended sizes. What is needed is a template library where the user can declare the size, or...
    Downloads: 2 This Week
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  • 24
    do - Dependency Injection

    do - Dependency Injection

    A dependency injection toolkit based on Go 1.18+ Generics

    do - Dependency Injection is a lightweight dependency injection toolkit for Go that implements the DI pattern using the language’s generics system to provide strong type safety and minimal runtime overhead. The library offers a service container that allows developers to register, resolve, and manage application dependencies in a structured and maintainable way. It supports multiple service lifecycles such as eager, lazy, and transient loading, along with circular dependency detection and interface binding. ...
    Downloads: 4 This Week
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  • 25
    Caliban

    Caliban

    Functional GraphQL library for Scala

    ...All interfaces are pure and types are referentially transparent. Schemas are type safe and derived at compile time. No need to manually define a schema for every type in your API. Let the compiler do the boring work. Out-of-the-box support for major HTTP server libraries, effect types, Json libraries and more.
    Downloads: 4 This Week
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