🔍 _.haz() is like _.has() but this underscore and/or lodash mixin lets you do deep object key existence checking with a dot denoted string, for example 'a.b.c'

assertion library with reusable guard function

Assert that TypeScript finds an error in your test files.

React Redux chat with settings page

just a helpful assert which I was lacking in jest/chai/jasmine

Simple and lightweight javascript object schema validation library.

Test if two numbers are coprime.

Test if two arguments are both generic arrays and contain respective elements which are approximately equal within a specified number of ULPs (units in the last place).

Assert that two Node-API data types are equal.

Test if a value is an email address.

Test if a value is an array-like object containing only nonpositive numbers.

Test if a value is equal to negative zero.

Usefull libraries in C based on my needs.

Test whether two double-precision complex floating-point numbers are the same value.

Test whether two double-precision complex floating-point numbers are not equal.

Assert for gfortran linux

Test if an object's own property has a data descriptor.

Test if a value is a parseable JSON string.

Test if two arguments are both Uint16Arrays and have equal values.

Test if an object has a specified property, either own or inherited.