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4780 packages found
Test if a value is a regular expression string.
- stdlib
- stdassert
- assertion
- assert
- utils
- util
- utilities
- utility
- isregexp
- regular expression
- regexp
- regex
- regular
- expression
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Test if a value is a boolean.
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- get
- autoscaling
- crypt
- ts
- metadata
- serialization
- names
- sorted
- browserslist
- compile less
- agent
- lint
- route53
- typeerror
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simple, flexible, fun test framework
provides snapshot testing like jest
<img alt="rocket" src="rocket.svg" width="120" />
- is
- ES2023
- bound
- fixed-width
- tools
- ES2022
- in
- css variable
- route53
- object
- RFC-6455
- URLSearchParams
- require
- trimEnd
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Test if a value is a Uint8Array.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- uint8array
- uint8
- unsigned
- integer
- int
- uint
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> Safely flatten a nested JavaScript object.
- package manager
- password
- visual
- Function.prototype.name
- Object.entries
- scheme-validation
- yup
- collection
- setPrototypeOf
- unicode
- dataView
- RFC-6455
- await
- bind
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Test if a value is an object.
 [](https://www.npmjs.com/package/@taktikorg/maiores-dolores-aut) [](https://www.npmjs.com/package/@diotoborg/quasi-repellat-odit) [
- Array.prototype.findLastIndex
- styleguide
- mobile
- fs
- time
- writable
- Array
- up
- ast
- Underscore
- call
- core
- optimizer
- deep-copy
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- yup
- toobject
- ArrayBuffer.prototype.slice
- es2018
- types
- Object
- style
- json
- optimizer
- number
- util
- typesafe
- ajax
- guid
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Test if a value is an Error object.
[](https://opensource.org/licenses/MIT)  
- east-asian-width
- moment
- yup
- tdd
- stringifier
- waf
- assertion
- watchFile
- speed
- fast-clone
- karma
- eslintconfig
- typescript
- typed
- View more
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- plugin
- number
- storagegateway
- folder
- logging
- bdd
- qs
- fixed-width
- ES2022
- endpoint
- drop
- RegExp#flags
- eslint-plugin
- fast
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