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1688 packages found
Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.
Does this environment have the ability to get the [[Prototype]] of an object on creation with `__proto__`?
A robust, ES3 compatible, "has own property" predicate.
Check if argv has a specific flag
Style elements relative to other elements in CSS
Iterate over the own and inherited enumerable properties of an object, and return an object with properties that evaluate to true from the callback. Exit early by returning `false`. JavaScript/Node.js
A tiny and fast dynamic type checker/enforcer library
Set nested properties on an object using dot notation.
- bury
- deep-get-set
- deep-object
- deep-property
- deep-set-in
- deep-set
- deephas
- dot-prop
- dot2val
- es5-dot-prop
- get
- getsetdeep
- has
- hasown
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Returns true if a value exists, false if empty. Works with deeply nested values using object paths.
Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.
detect file extensions, check if text or binary file, or get list of text or binary file extensions
- binary
- extensions
- extension
- file
- path
- check
- detect
- is
- browser
- deno
- deno-edition
- deno-entry
- denoland
- es2022
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 [](https://trav
- number
- streams2
- events
- joi
- once
- ECMAScript 2018
- warning
- robust
- auth
- full-width
- fetch
- proto
- classname
- deep
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- ECMAScript 5
- delete
- .env
- define
- reducer
- cache
- slice
- protobuf
- descriptor
- Object.is
- test
- ajax
- ES2021
- indicator
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- mru
- equality
- regular expressions
- directory
- ReactiveExtensions
- option
- lockfile
- recursive
- setter
- Array.prototype.filter
- look-up
- framer
- concatMap
- ES2016
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- parents
- stable
- es2017
- jsdom
- formatting
- setPrototypeOf
- 256
- import
- functions
- middleware
- ECMAScript 2016
- classname
- css less
- keys
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Iterate over the own enumerable properties of an object, and return an object with properties that evaluate to true from the callback. Exit early by returning `false`. JavaScript/Node.js.
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- debugger
- react pose
- slice
- toArray
- superagent
- form-validation
- bluebird
- every
- cache
- handlers
- encryption
- core
- iam
- Int16Array
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