Store information about any JS value in a side channel. Uses WeakMap if available.
Does this JS environment support the `name` property on functions?
If available, the `Object.prototype.__proto__` accessor and mutator, call-bound
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.
ES6 spec-compliant RegExp.prototype.flags shim.
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
Store information about any JS value in a side channel, using a Map
append AST into power-assert context
Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
escape Markdown control characters
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.
Unbox a boxed JS primitive value.
Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
test whether SPDX expressions satisfy licensing criteria
Set a function's length property
Get the ArrayBuffer out of a TypedArray, robustly.
`Array.prototype.concat`, but made safe by ignoring Symbol.isConcatSpreadable
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
`Iterator.prototype`, or a shared object to use.
Determine if a value is an ES6 Symbol or not.
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.