Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Test if a double-precision floating-point numeric value is negative zero.

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

append AST into power-assert context

Babel plugin for power-assert

diagram renderer for power-assert context

comparison renderer for power-assert context

Store information about any JS value in a side channel, using a Map

Resolve npm package details, like name and base path, given an absolute path to a file inside a package

escape Markdown control characters

Unbox a boxed JS primitive value.

Is this value negative zero? === will lie to you

Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Assert that a Node-API value is a specified Node-API data type.

Set a function's length property

base renderer for power-assert context

Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

Encourages programming with assertions by providing tools to compile them away

`Iterator.prototype`, or a shared object to use.