Contains Packages

Object properties matcher for Chai

General JavaScript Utilities

test for collision with a circle and point

A small collection of useful array functions.

A module that helps determine if an array has only unique elements

A tool to determine whether an object or an array contains an element

Simulate the browser's classList API for HAST nodes

Curried predicate which checks that a value exists in an array. Generally faster than `indexOf` across JS engines.

Determines whether or not one HTMLElement is or contains another HTMLElement.

Check weather an item exist in array or not

find whether a string (or arr<string>) contains any, or all of another array of strings.

Returns true if the value is present in the list

Creates a virtual context that can hold values with given references.

Ping service for watchmen. Check if the http response contains certain content

turf boolean-contains module

Match URI query parameters with given object

Search key exists, in a deep json object

Check whether string contains another string, or one of many strings. Supports locale and case-sensitive / case-insensitive matching.

1D segment operations

Search by tag will break a tag query into array of strings