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144 packages found
A library of pre-condition, post-condition and invariant helpers
Design-by-Contract and Test-by-Contract for JavaScript
Set of functions to make your TypeScript/JavaScript code safer
Design-by-Contract and Test-by-Contract for JavaScript
flow typed nullthrows
Runtime type checking for objects using validate.js
- vtypes-modularized
- vtypes
- validate.js
- validation
- array
- arrayof
- bool
- different
- func
- immutable
- invariant
- json
- objectof
- only
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A tiny invariant function. Forked from https://npmjs.com/package/tiny-invariant
An swc port of facebook's babel-plugin-dev-expression. Replaces __DEV__, wraps warning and invariant calls.
Euler characteristic for simplicial complexes
- topology
- euler
- characteristic
- homology
- cohomology
- betti
- number
- invariant
- mesh
- simplicial
- complex
- triangle
- graph
- tetrahedra
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A decorator warns developers about incorrect usage of Next.js page decorators
typed-invariant
invariant and assert functions with types for React Native
A collection of simple runtime assertions inspired by Facebook's invariant and warning.
- simple
- assertions
- runtime
- runtime assertions
- assert
- invariant
- warning
- error
- safe
- safe assert
- safe invariant
- safe warning
- safe error
- production safe
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- <a target="_blank" rel="noopener noreferrer" href='https://codesandbox.io/s/usefetch-in-nextjs-nn9fm'>Example - Next.js</a> - <a target="_blank" rel="noopener noreferrer" href='https://codesandbox.io/embed/km04k9k9x5'>Examples - create-react-app</a>
- react hook
- react-hook
- use
- isomorphic
- http
- fetch
- hook
- react
- useFetch
- request
- axios
- react-use-fetch
- react-fetch-hook
- use-fetch
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Zero dependency, strongly typed helper library for cryptography, base64 utilities, nested proxy, and invariant.
Type definitions for invariant 2.2.0 from https://www.github.com/DefinitelyTyped/DefinitelyTyped