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135 packages found
Script that parses a boolean query to an array with all the possibilities. IE: (a AND (b OR c)) -> [[a, b],[a, c]]
Check if a value is an array `Polyfill`
React hooks to create stateful API's for reusable object patterns
An Angular Library, that gives you a hussle free experience on data operation using pipes
- ngx
- ng
- angular
- pipes
- filters
- library
- ngx pipes
- angular filters
- angular pipes
- pipe
- operation
- string
- array
- object
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Validation utilities.
- validate.io
- validator
- validation
- validate
- valid
- is
- isvalid
- check
- typed
- assert
- expect
- api
- string
- primitive
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Check if a given value is empty in JS extending his "truthy" and "falsy" nature
Transform ES2015 Promise to Stream - specifically, Transform Stream using [through2][]. Works in object mode by default, but you can pass options directly to the [through2][] package.
- always
- array
- boolean
- buffer
- create
- everything
- make
- promise
- promise-stream
- promises
- str
- stream
- string
- through
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Ask for a type, returns a true/false as answer.
checks if value exists in array or string returning boolean
This module is small but easy to use. The purpose of this module is to check if a target value does not equals a source value, it can optionally also do none case sensitive comparing.
retrieve the type of your value by using constructors when possible
compare the type of your value with one or several types
- typeof
- types
- instanceof
- type-of
- test
- check
- typeof-in
- string
- constructor
- name
- number
- object
- array
- function
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Utility to use tuples of booleans (i.e. array of booleans) as filtering mechanism leveraging Bitwise operators 'under the hood'
This module is small but easy to use. The purpose of this module is to check if a value is a array but if it is not an array it will convert the value into an array.
Ask for a type, returns a true/false as answer.
A robust micro library for type checking. Defers to constructs' internal `[[Class]]` property rather than duck typing for excellent type detection and to avoid triggering false positives.
Verify all kind of data using Promises (Object, Array, String, Number, Boolean, Function).
Represent a set of observs as one boolean, saying whether they are all truthy
A Node.js library offering functions to check variable types, including arrays, objects, strings, numbers, booleans, and undefined values.
Random JavaScript value generator for testing or seed data.