ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.
Helper function for exhaustive checks of discriminated unions in TypeScript
A querystring parser that supports nesting and arrays, with a depth limit
parse SPDX license expressions
Store information about any JS value in a side channel. Uses WeakMap if available.
If available, the `Object.prototype.__proto__` accessor and mutator, call-bound
Does this JS environment support the `name` property on functions?
Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Store information about any JS value in a side channel, using a linked list
Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Store information about any JS value in a side channel, using a Map
A simple browserifiable module for password-encrypting JS objects.
Is this value negative zero? === will lie to you
escape Markdown control characters
Check if the runtime is a web browser.
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Unbox a boxed JS primitive value.
Resolve npm package details, like name and base path, given an absolute path to a file inside a package
test whether SPDX expressions satisfy licensing criteria
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Set a function's length property
BDD/TDD assertion library for node.js and the browser. Test framework agnostic.