side-channel-weakmap

Store information about any JS value in a side channel. Uses WeakMap if available.

side-channel

Store information about any JS value in a side channel. Uses WeakMap if available.

is-weakmap

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

is-weakset

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