  
Standard library assertions
Looks up the first non-whitespace character to the left/right of a given index
Provides assertAccessible API to check DOM for accessibility issues
Minimal assert with type checking
Cross spawn with a completion callback
Test if a value is ndarray-like.
Assertions for library authors.
Test if a value is a BooleanArray.
Take an array of string index ranges, delete/replace the string according to them
Test if an input value is an ndarray order.
Generate random numbers with a seed, useful for reproducible tests
Test if an input value is a supported ndarray index mode.
To compare dom and shadow dom trees. Part of open-wc recommendations
BDD/TDD assertion library for node.js and the browser. Test framework agnostic.
Mini assertion library
DOM assertions for the Chai assertion library using vanilla JavaScript
Test if a value is an array-like object containing only integers.
Standardizer for node's console.assert
Gather string index ranges
Like _.pullAll but with globs (wildcards)
Test if a value is iterator-like.
ES Proposal spec-compliant shim for Promise.withResolvers
Adds a unique suffix to a string with process and thread uniqueness guarantees. Adapted from https://github.com/npm/write-file-atomic