side-channel-weakmap

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

v1.0.2 URL: https://unpkg.com/side-channel-weakmap@1.0.2/index.js

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weakmap map side channel metadata

side-channel

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

v1.1.0 URL: https://unpkg.com/side-channel@1.1.0/index.js

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weakmap map side channel metadata

is-weakmap

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

v2.0.2 URL: https://unpkg.com/is-weakmap@2.0.2/index.js

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map weakmap set weakset collection is robust

internal-slot

ES spec-like internal slots

v1.1.0 URL: https://unpkg.com/internal-slot@1.1.0/index.js

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internal slot internal slot ecmascript es spec private data private data weakmap

which-collection

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

v1.0.2 URL: https://unpkg.com/which-collection@1.0.2/index.js

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map set weakmap weakset collection.es6 es2015