npmjs.org "type-checking" keyword
eslint-plugin-typed-jsdoc 0.1.0
ESLint plugin for JSDoc type accuracy - compares JSDoc to TypeScript inference1 version - Latest release: 30 days ago - 96 downloads last month - 0 stars on GitHub - 1 maintainer
Top 1.8% on npmjs.org
78 versions - Latest release: 6 months ago - 128 dependent packages - 306,916 dependent repositories - 56.4 million downloads last month - 181 stars on GitHub - 1 maintainer
is-what 5.5.0 💰
JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & s...78 versions - Latest release: 6 months ago - 128 dependent packages - 306,916 dependent repositories - 56.4 million downloads last month - 181 stars on GitHub - 1 maintainer
Top 2.0% on npmjs.org
132 versions - Latest release: over 2 years ago - 267 dependent packages - 3,548 dependent repositories - 768 thousand downloads last month - 144 stars on GitHub - 3 maintainers
machine 15.2.3
Build functions in standardized containers.132 versions - Latest release: over 2 years ago - 267 dependent packages - 3,548 dependent repositories - 768 thousand downloads last month - 144 stars on GitHub - 3 maintainers
Top 2.8% on npmjs.org
29 versions - Latest release: over 1 year ago - 85 dependent packages - 87,823 dependent repositories - 35.9 million downloads last month - 25 stars on GitHub - 1 maintainer
typical 7.3.0
Isomorphic, functional type-checking for Javascript29 versions - Latest release: over 1 year ago - 85 dependent packages - 87,823 dependent repositories - 35.9 million downloads last month - 25 stars on GitHub - 1 maintainer
Top 0.7% on npmjs.org
916 versions - Latest release: almost 5 years ago - 1,076 dependent packages - 19,205 dependent repositories - 26.8 million downloads last month - 6,622 stars on GitHub - 1 maintainer
ts-toolbelt 9.6.0 💰
TypeScript's largest utility library916 versions - Latest release: almost 5 years ago - 1,076 dependent packages - 19,205 dependent repositories - 26.8 million downloads last month - 6,622 stars on GitHub - 1 maintainer
function.check 0.11.1
Runtime type checking in plain javascript25 versions - Latest release: almost 8 years ago - 1 dependent package - 1 dependent repositories - 517 downloads last month - 1 stars on GitHub - 1 maintainer
@envchecker/env-validator 1.1.0
A powerful environment variable validator for Node.js applications with schema validation, type c...3 versions - Latest release: about 1 year ago - 5 downloads last month - 1 maintainer
@kevincuadros/react-code 1.3.2
> Pin input component for React3 versions - Latest release: over 3 years ago - 1 dependent package - 1 downloads last month - 0 stars on GitHub - 1 maintainer
@renderorange/class-types 2.0.0
Base class for runtime type checking in JavaScript2 versions - Latest release: 4 days ago - 165 downloads last month - 1 maintainer
@rastopyr/ow 0.13.2 💰
Function argument validation for humans2 versions - Latest release: over 6 years ago - 2 dependent packages - 1 dependent repositories - 4 downloads last month - 3,880 stars on GitHub - 1 maintainer
Top 5.8% on npmjs.org
1 version - Latest release: over 4 years ago - 2 dependent packages - 15 dependent repositories - 27 downloads last month - 3,781 stars on GitHub - 1 maintainer
@tamagui/ow 0.28.1 💰
Function argument validation for humans1 version - Latest release: over 4 years ago - 2 dependent packages - 15 dependent repositories - 27 downloads last month - 3,781 stars on GitHub - 1 maintainer
ow--fork-by-jblew-with-catching 0.13.5 💰
Function argument validation for humans4 versions - Latest release: over 6 years ago - 4 dependent packages - 8 dependent repositories - 24 downloads last month - 3,781 stars on GitHub - 1 maintainer
types-verifier 1.0.0-alpha.2
A super tiny library that verifies types2 versions - Latest release: over 7 years ago - 1 dependent repositories - 11 downloads last month - 0 stars on GitHub - 1 maintainer
reliant-type 2.1.5
A modern TypeScript validation library designed around familiar interface syntax and powerful con...4 versions - Latest release: 3 months ago - 353 downloads last month - 1 maintainer
@protolabo/zenjs 0.2.1
A comprehensive, type-safe utility library for common programming tasks3 versions - Latest release: 4 months ago - 14 downloads last month - 0 stars on GitHub - 1 maintainer
infrared-core 0.0.1
Fast light weight inferred static type checker in real time for JavaScript.1 version - Latest release: over 7 years ago - 1 dependent package - 1 dependent repositories - 13 downloads last month - 47 stars on GitHub - 1 maintainer
@fchauvel/quick-check 0.2.0
Internal DSL to check and convert JSON structures2 versions - Latest release: about 6 years ago - 2 dependent packages - 1 dependent repositories - 8 downloads last month - 1 stars on GitHub - 1 maintainer
ntype 0.0.11
defining interfaces for class structure and auto-type checking in javascript for Node.js5 versions - Latest release: almost 13 years ago - 1 dependent package - 2 dependent repositories - 8 downloads last month - 0 stars on GitHub - 1 maintainer
Top 2.6% on npmjs.org
90 versions - Latest release: over 2 years ago - 511 dependent packages - 1,105,180 dependent repositories - 20.3 million downloads last month - 26 stars on gitlab.com - 1 maintainer
check-types 11.2.3
A little library for asserting types and values, with zero dependencies.90 versions - Latest release: over 2 years ago - 511 dependent packages - 1,105,180 dependent repositories - 20.3 million downloads last month - 26 stars on gitlab.com - 1 maintainer
@omnitron-dev/cuid 0.4.5
CUID implementation6 versions - Latest release: 3 months ago - 34 downloads last month - 1 maintainer
@zhin.js/schema 1.0.28 💰
Configuration validation and schema system for Zhin.js29 versions - Latest release: 4 days ago - 4.43 thousand downloads last month - 126 stars on GitHub - 1 maintainer
tisnthings 1.6.22
Smallish set of things I often use. Favors brevity.5 versions - Latest release: almost 10 years ago - 1 dependent package - 1 dependent repositories - 2 downloads last month - 0 stars on GitHub - 1 maintainer
is-number-checker 1.0.4
An utility to check if a value is a number (allowing string numbers optionally).5 versions - Latest release: about 1 year ago - 8 downloads last month - 1 maintainer
@side-quest/tsc-runner 1.0.3
TypeScript type checker MCP server — structured diagnostics for Claude Code4 versions - Latest release: 4 days ago - 261 downloads last month - 0 stars on GitHub - 1 maintainer
@deebeetech/is-helper 1.0.1
A collection of "is"-style helpers to help solidify if something "is" something else. Has no depe...2 versions - Latest release: 8 months ago - 9 downloads last month - 0 stars on GitHub - 1 maintainer
error-if-not-primitive 1.0.0
Function triggers error if argument is not a primitive type1 version - Latest release: almost 7 years ago - 2 dependent packages - 5 dependent repositories - 4 downloads last month - 0 stars on GitHub - 1 maintainer
@fab1o/check-types 14.4.0
A little library for asserting types and values.4 versions - Latest release: almost 3 years ago - 2 dependent packages - 1 dependent repositories - 15 downloads last month - 0 stars on GitHub - 1 maintainer
@oneisland/validator 0.0.3
A simple tool for validation and type checking of variables in JavaScript3 versions - Latest release: over 6 years ago - 3 dependent packages - 2 dependent repositories - 81 downloads last month - 0 stars on GitHub - 1 maintainer
Top 2.8% on npmjs.org
17 versions - Latest release: over 7 years ago - 9 dependent packages - 3,799 dependent repositories - 78 thousand downloads last month - 75 stars on GitHub - 2 maintainers
upcast 4.0.0
Upcast is a low-level JavaScript type checking and casting library17 versions - Latest release: over 7 years ago - 9 dependent packages - 3,799 dependent repositories - 78 thousand downloads last month - 75 stars on GitHub - 2 maintainers
primitive-predicates 2.1.4
A simple TypeScript library providing type guards for the primitive types in JavaScript.34 versions - Latest release: almost 2 years ago - 3 dependent packages - 1 dependent repositories - 39 downloads last month - 3 stars on GitHub - 1 maintainer
typisch 0.0.0
Set-theory based runtime type system1 version - Latest release: almost 7 years ago - 1 dependent package - 1 dependent repositories - 5 downloads last month - 3 stars on GitHub - 3 maintainers
preid 0.6.0
Unique IDs with prefixes, inspired by Stripe10 versions - Latest release: over 2 years ago - 24 downloads last month - 1 maintainer
@oneshot101/rbxdev-mcp 0.3.4
MCP server for connecting AI tools (Claude, Cursor, etc.) to live Roblox game instances4 versions - Latest release: 11 days ago - 389 downloads last month - 1 stars on GitHub - 1 maintainer
Top 7.9% on npmjs.org
6 versions - Latest release: over 3 years ago - 8 dependent packages - 5 dependent repositories - 1.74 thousand downloads last month - 79 stars on GitHub - 1 maintainer
vite-plugin-vitest-typescript-assert 1.1.4 💰
🔥 TypeScript type assertion plugin for vitest.6 versions - Latest release: over 3 years ago - 8 dependent packages - 5 dependent repositories - 1.74 thousand downloads last month - 79 stars on GitHub - 1 maintainer
type-sentry 0.0.9
A powerful TypeScript library for runtime type checking and validation using decorators9 versions - Latest release: over 1 year ago - 26 downloads last month - 8 stars on GitHub - 1 maintainer
@treedy/pyright-mcp 1.1.8
MCP server exposing Pyright LSP features for Python code intelligence9 versions - Latest release: 28 days ago - 1 maintainer
Top 8.3% on npmjs.org
9 versions - Latest release: over 7 years ago - 10 dependent packages - 6 dependent repositories - 451 downloads last month - 199 stars on GitHub - 2 maintainers
hm-def 1.0.2
Runtime type checking with Hindley Milner signatures9 versions - Latest release: over 7 years ago - 10 dependent packages - 6 dependent repositories - 451 downloads last month - 199 stars on GitHub - 2 maintainers
validated-method 1.0.3
Runtime type checking for JavaScript function parameters4 versions - Latest release: 10 months ago - 94 downloads last month - 0 stars on GitHub - 1 maintainer
wtf-is 0.1.1
Tiny type-checking library2 versions - Latest release: almost 12 years ago - 1 dependent repositories - 32 downloads last month - 0 stars on GitHub - 1 maintainer
@treedy/typescript-lsp-mcp 0.1.7
MCP server providing TypeScript/JavaScript code intelligence using the official TypeScript Langua...6 versions - Latest release: 28 days ago - 377 downloads last month - 1 maintainer
Top 3.4% on npmjs.org
13 versions - Latest release: about 8 years ago - 40 dependent packages - 59 dependent repositories - 48.5 thousand downloads last month - 89 stars on GitHub - 1 maintainer
predicates 2.0.3
Set of various predicates for type checking, assertions, filtering etc13 versions - Latest release: about 8 years ago - 40 dependent packages - 59 dependent repositories - 48.5 thousand downloads last month - 89 stars on GitHub - 1 maintainer
easy-enums 1.1.8
Easy but powerful enums for safer code. e.g. const Fruit = new Enum("apple pear banana"); gives y...10 versions - Latest release: over 5 years ago - 3 dependent packages - 8 dependent repositories - 69 downloads last month - 0 stars on GitHub - 1 maintainer
@maluscat/runtime-type-check 1.1.1
Modular runtime type checker with focus on creating readable and smart error messages3 versions - Latest release: over 1 year ago - 8 downloads last month - 0 stars on GitHub - 1 maintainer
error-if-not-function 1.0.0
Function triggers error if argument is not type 'function'1 version - Latest release: almost 7 years ago - 6 dependent packages - 5 dependent repositories - 8 downloads last month - 0 stars on GitHub - 1 maintainer
@wahfung/is-what 0.0.6
Tiny javescript type check functions3 versions - Latest release: almost 4 years ago - 1 dependent package - 1 downloads last month - 0 stars on GitHub - 1 maintainer
@composi/get-type 1.0.12
Function to get the type of the provided value. This is not the same as 'typeof'. It returns the ...13 versions - Latest release: almost 6 years ago - 3 dependent packages - 4 dependent repositories - 12 downloads last month - 1 stars on GitHub - 1 maintainer
@sounisi5011/ts-utils-is-property-accessible 1.0.3
Check if a value is property accessible4 versions - Latest release: almost 4 years ago - 4 dependent packages - 1 dependent repositories - 65 downloads last month - 5 stars on GitHub - 1 maintainer
dhi 1.1.21
Ultra-fast Zod 4 drop-in replacement - 20x faster average, full API parity, SIMD WASM, 28KB binary26 versions - Latest release: about 1 month ago - 506 downloads last month - 35 stars on GitHub - 1 maintainer
error-if-not-finite-number 2.0.1
Function triggers error if argument is not finite number of type 'number'3 versions - Latest release: over 5 years ago - 17 dependent packages - 21 dependent repositories - 43 downloads last month - 0 stars on GitHub - 1 maintainer
typeguru 0.0.4
TypeGuru is a lightweight TypeScript utility library for type checking. It includes utility funct...4 versions - Latest release: almost 3 years ago - 13 downloads last month - 0 stars on GitHub - 1 maintainer
@arcletjs/alconna 1.0.4
A High-performance, Generality, Humane Command Line Arguments Parser Library.5 versions - Latest release: about 3 years ago - 1 dependent package - 15 downloads last month - 1 stars on GitHub - 1 maintainer
next-routes-typed 0.1.0
Generate type-safe route utilities for Next.js app router1 version - Latest release: over 1 year ago - 8 downloads last month - 1 maintainer
@razinshafayet/typedjs 0.3.0
Runtime type checking for JavaScript7 versions - Latest release: about 1 month ago - 1 maintainer
yatc 0.1.0
Yet Another Type Checker for JavaScript1 version - Latest release: about 11 years ago - 2 dependent packages - 5 dependent repositories - 17 downloads last month - 1 stars on GitHub - 1 maintainer
@produck/type-error 0.1.4
A helper utility to throw type errors using the Produck TypeError template5 versions - Latest release: 7 days ago - 0 stars on GitHub - 4 maintainers
truthify 1.0.0
Helps you confirm the existence of specified falsy values (e.g. 0)1 version - Latest release: over 10 years ago - 1 dependent repositories - 9 downloads last month - 1 maintainer
Top 5.9% on npmjs.org
8 versions - Latest release: about 6 years ago - 6 dependent packages - 7 dependent repositories - 108 downloads last month - 24 stars on GitHub - 1 maintainer
variable-type 1.0.0 💰
Runtime type checking for variable and similar objects.8 versions - Latest release: about 6 years ago - 6 dependent packages - 7 dependent repositories - 108 downloads last month - 24 stars on GitHub - 1 maintainer
sniffly 1.0.2
A lightweight TypeScript utility library for performing common type-safe value checks with type n...3 versions - Latest release: about 1 year ago - 15 downloads last month - 0 stars on GitHub - 1 maintainer
eslint-plugin-no-truthy-collections 1.0.4
ESLint plugin that prevents dangerous boolean coercion of arrays and objects in JavaScript and Ty...5 versions - Latest release: 9 months ago - 2 downloads last month - 0 stars on GitHub - 1 maintainer
@jasonbyrne/dry-types 0.2.12
Reusable utility functions for type conversions and checks19 versions - Latest release: about 2 months ago - 310 downloads last month - 0 stars on GitHub - 1 maintainer
ensure-types 1.0.2
Simple helpers to ensure uncertain interfaces in typescript3 versions - Latest release: over 6 years ago - 1 dependent package - 1 dependent repositories - 8 downloads last month - 0 stars on GitHub - 1 maintainer
lukinto-utils-type-checking 1.0.0
A library of type checking utilities.1 version - Latest release: about 3 years ago - 1 downloads last month - 0 stars on GitHub - 1 maintainer
khyron 0.2.1
Run-time type checking for JavaScript3 versions - Latest release: about 8 years ago - 1 dependent package - 1 dependent repositories - 8 downloads last month - 1 stars on GitHub - 1 maintainer
vuex-store-validator 2.0.7 💰
Validate Vuex Commits with Joi, Superstruct & Yup Schema11 versions - Latest release: almost 5 years ago - 1 dependent package - 70 downloads last month - 4 stars on GitHub - 1 maintainer
@molinit/validator 1.0.2
A flexible, type-safe validation library for TypeScript/JavaScript with declarative schema-based ...2 versions - Latest release: 4 months ago - 1 maintainer
@moon7/inspect 0.1.1
Lightweight, type-safe runtime type checking library for TypeScript and JavaScript2 versions - Latest release: 10 months ago - 10 downloads last month - 0 stars on GitHub - 1 maintainer
@gloch96/typed-getters 2.0.1
Unlike default EcmaScript (JavaScript) constructors such as `String() defaults to '' | Number() d...6 versions - Latest release: over 1 year ago - 49 downloads last month - 0 stars on GitHub - 1 maintainer
envkeeper 2.2.0
🛡️ The most human-friendly environment variable validator for Node.js - Beautiful error messages ...5 versions - Latest release: 5 months ago - 12 downloads last month - 0 stars on GitHub - 1 maintainer
@we-mobius/type-check 0.0.4
Type-checking support.4 versions - Latest release: almost 2 years ago - 9 dependent packages - 1 dependent repositories - 82 downloads last month - 1 maintainer
error-if-not-object 2.0.0
Function triggers error is passed argument is not an object. Arrays are considered objects. Null...2 versions - Latest release: over 5 years ago - 4 dependent packages - 5 dependent repositories - 2 downloads last month - 0 stars on GitHub - 1 maintainer
notmytype 2.0.0
Type-check your function inputs with syntax like T(s, T.string, buf, Buffer, strings, T.list(T.st...13 versions - Latest release: over 10 years ago - 1 dependent package - 2 dependent repositories - 13 downloads last month - 2 stars on GitHub - 1 maintainer
typso 1.0.0
A comprehensive runtime type-checking library for JavaScript, React, Node.js, and Express.1 version - Latest release: over 1 year ago - 1 downloads last month - 0 stars on GitHub - 1 maintainer
sniff-check 0.2.2
🎯 Opinionated TypeScript/Next.js Development Toolkit - Find large files, unused imports, broken i...15 versions - Latest release: 5 months ago - 190 downloads last month - 0 stars on GitHub - 1 maintainer
@scaffit/typescript 1.0.4
TypeScript configuration setup with strict configs for Next.js, React, Vue, Angular, Svelte, Expr...4 versions - Latest release: 4 months ago - 15 downloads last month - 0 stars on GitHub - 1 maintainer
ts-lsp-mcp 0.1.3
MCP server exposing TypeScript LSP-like functionality to AI agents2 versions - Latest release: 3 months ago - 1 maintainer
jstype 0.0.6
Extended and extensible javascript type checking6 versions - Latest release: over 12 years ago - 3 dependent packages - 4 dependent repositories - 7 downloads last month - 2 stars on GitHub - 1 maintainer
redux-action-type-validator 1.1.0
Type validator for redux actions4 versions - Latest release: almost 10 years ago - 1 dependent repositories - 11 downloads last month - 0 stars on GitHub - 1 maintainer
@djodjonx/wiredi 0.0.13
WireDI - Wire your dependency injection with type safety and compile-time validation8 versions - Latest release: about 2 months ago - 1 maintainer
go-types 1.3.1
Type-checking utilities for JavaScript5 versions - Latest release: over 3 years ago - 2 dependent packages - 3.69 thousand downloads last month - 0 stars on GitHub - 1 maintainer
@utilify/core 2.0.5
Modern, strongly typed, and safe utility function library for JavaScript and TypeScript. Includes...7 versions - Latest release: 6 months ago - 1.77 thousand downloads last month - 2 stars on GitHub - 1 maintainer
@noneforge/eslint-config 0.2.9
TypeScript/JavaScript ESLint configuration with strict type checking and modern stylistic rules9 versions - Latest release: about 2 months ago - 647 downloads last month - 0 stars on GitHub - 1 maintainer
type-checking-utils 2.2.0
Type checking utilities.10 versions - Latest release: over 2 years ago - 3 dependent packages - 4 downloads last month - 1 maintainer
@dworthen/bycontract 2.0.8
argument validation library based on JSDOC syntax1 version - Latest release: about 6 years ago - 3 dependent packages - 9 downloads last month - 31 stars on GitHub - 1 maintainer
Top 4.4% on npmjs.org
18 versions - Latest release: almost 5 years ago - 8 dependent packages - 19 dependent repositories - 5.64 thousand downloads last month - 31 stars on GitHub - 1 maintainer
bycontract 2.0.11
argument validation library based on JSDOC syntax18 versions - Latest release: almost 5 years ago - 8 dependent packages - 19 dependent repositories - 5.64 thousand downloads last month - 31 stars on GitHub - 1 maintainer
Top 4.0% on npmjs.org
10 versions - Latest release: over 8 years ago - 9 dependent packages - 14 dependent repositories - 1.35 thousand downloads last month - 93 stars on GitHub - 1 maintainer
typeis 1.1.2
Typeis. it's the smart and simple javascript type check and validation library10 versions - Latest release: over 8 years ago - 9 dependent packages - 14 dependent repositories - 1.35 thousand downloads last month - 93 stars on GitHub - 1 maintainer
clove-lang 2.0.5
A class-oriented programming-language2 versions - Latest release: over 5 years ago - 1 dependent package - 13 downloads last month - 1 maintainer
@liautaud/typezod 2.0.0
Zod-like DSL for comparing TypeScript compiler types against user-defined schemas3 versions - Latest release: 13 days ago - 0 stars on GitHub - 1 maintainer
Top 6.5% on npmjs.org
3 versions - Latest release: over 7 years ago - 4 dependent packages - 468 dependent repositories - 1.73 thousand downloads last month - 2 stars on GitHub - 1 maintainer
typeco 1.0.0 💰
A javascript library which allows to check javascript value types at runtime3 versions - Latest release: over 7 years ago - 4 dependent packages - 468 dependent repositories - 1.73 thousand downloads last month - 2 stars on GitHub - 1 maintainer
@illavv/run_typer 3.0.4
A robust TypeScript class for type checking and validation15 versions - Latest release: 5 months ago - 13 downloads last month - 1 maintainer
@frantisekstanko/assertion 1.0.0
Type-safe assertion library for TypeScript8 versions - Latest release: 5 months ago - 29 downloads last month - 0 stars on GitHub - 1 maintainer
@jmlweb/tsconfig-react 1.0.6
TypeScript configuration for React libraries with JSX support and modern defaults7 versions - Latest release: 2 months ago - 803 downloads last month - 1 maintainer
@jmlweb/tsconfig-base 1.0.5
Base TypeScript configuration with strict type checking and modern defaults6 versions - Latest release: 2 months ago - 1 maintainer
@jmlweb/tsconfig-nextjs 1.1.7
TypeScript configuration for Next.js applications with App Router and Pages Router support7 versions - Latest release: 2 months ago - 348 downloads last month - 1 maintainer
@jmlweb/tsconfig-node 1.0.6
TypeScript configuration for Node.js and CLI projects. Extends @jmlweb/tsconfig-base with Node.js...7 versions - Latest release: 2 months ago - 29 downloads last month - 1 maintainer
@jmlweb/tsconfig-astro 1.1.5
TypeScript configuration for Astro projects with JSX support and modern defaults7 versions - Latest release: 2 months ago - 364 downloads last month - 1 maintainer
@isz/wants 0.0.1
🐾 What does the request want?2 versions - Latest release: 6 months ago - 29 downloads last month - 0 stars on GitHub - 1 maintainer
@isz/content-type-is 0.0.1
🐾 What kind of content is this request/response?2 versions - Latest release: 6 months ago - 4 downloads last month - 0 stars on GitHub - 1 maintainer
lycoris 2.0.1
An object-oriented programming language1 version - Latest release: about 6 years ago - 1 dependent package - 9 downloads last month - 1 maintainer
@wistia/type-guards 0.9.3
Type guards148 versions - Latest release: 3 months ago - 1 dependent package - 305 thousand downloads last month - 3 maintainers
@chingwag/typecheck 1.0.2
TypeScript type checker with full React/library type validation2 versions - Latest release: 3 months ago - 2 downloads last month - 1 maintainer
Related Keywords
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