Store information about any JS value in a side channel. Uses WeakMap if available.
ES6 spec-compliant RegExp.prototype.flags shim.
Does this JS environment support the `name` property on functions?
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.
Helper function for exhaustive checks of discriminated unions in TypeScript
ES5 spec-compliant shim for String.prototype.trim
ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.
Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Power Assert feature enhancer for assert function/object
Unbox a boxed JS primitive value.
Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
parse SPDX license expressions
Store information about any JS value in a side channel, using a Map
Is this value negative zero? === will lie to you
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
`Iterator.prototype`, or a shared object to use.
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Encode and parse data in the Concise Binary Object Representation (CBOR) data format (RFC8949).
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Set a function's length property
Is this value an ES BigInt?
Determine if a value is an ES6 Symbol or not.