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3027 packages found
Detect the file type of a file, stream, or data
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
Runtime library to validate data against TypeScript interfaces
A little library for asserting types and values, with zero dependencies.
- type
- types
- type-check
- type-checking
- duck-typing
- arguments
- parameters
- values
- data
- contract
- assert
- check
- verify
- safe
A simple and composable way to validate data in JavaScript (and TypeScript).
>This repository is part of the [Pelias](https://github.com/pelias/pelias) >project. Pelias is an open-source, open-data geocoder originally sponsored by >[Mapzen](https://www.mapzen.com/). Our official user documentation is >[here](https://github.com/pel
- ECMAScript 6
- less.js
- buffers
- cloudfront
- extra
- validation
- 0
- bundling
- cloudwatch
- writable
- has-own
- redux
- promise
- delete
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- less mixins
- concatMap
- stdlib
- look-up
- helpers
- Observables
- stable
- WebSockets
- watcher
- jwt
- time
- ES5
- bundling
- sort
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TypeConformity is a powerful TypeScript/JavaScript library for validating types of values at runtime, enforcing data integrity and preventing erroneous or unexpected data in your systems.
Takes any JavaScript data type or object as an input and returns a string describing the type of the input.
A simple TypeScript library providing type guards for the primitive types in JavaScript.
- type
- types
- type-check
- type-checks
- type-checking
- predicate
- predicates
- type-predicate
- type-predicates
- type-assert
- type-asserting
- type-assertion
- type-assertions
- type-guard
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- Array.prototype.findLastIndex
- styleguide
- mobile
- fs
- time
- writable
- Array
- up
- ast
- Underscore
- call
- core
- optimizer
- deep-copy
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- regular
- gradients css3
- graphql
- command-line
- columns
- Object.entries
- schema
- util
- listeners
- ECMAScript 2018
- length
- query
- buffer
- ES5
- View more
A simple and composable way to validate data in JavaScript (and TypeScript).
A little library for asserting types and values, with zero dependencies. Follower for check-types (archived).
- type
- types
- type-check
- type-checking
- duck-typing
- arguments
- parameters
- values
- data
- contract
- assert
- check
- verify
- safe
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Test if an input value is a supported ndarray data type.
- stdlib
- stdtypes
- types
- base
- ndarray
- dtype
- data
- multidimensional
- array
- utilities
- utility
- utils
- util
- assert
- View more
Test if an input value is a supported array complex-valued floating-point data type.
Test if an input value is a supported array boolean data type.