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@krakenjs/cross-domain-safe-weakmap

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@krakenjs/cross-domain-safe-weakmap

Cross domain safe WeakMap.

  • 2.0.3
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decreased by-27.04%
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Cross Domain Safe WeakMap

build status code coverage npm version apache license

WeakMap shim that works with cross-domain windows. Uses native WeakMap when available.

Installation

As of version 2 this package will be published under the @krakenjs scope.

npm install @krakenjs/cross-domain-safe-weakmap

Rationale

Storing references to window objects is memory-expensive, even after those window objects have closed.

Existing WeakMap shims hang an object of the WeakMap key. This poses a problem when dealing with cross-domain windows, where setting or getting any key other than a pre-defined set of readonly values, will throw a cross-origin error.

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Package last updated on 09 Apr 2022

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