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cross-domain-safe-weakmap

v1.0.29

Published

Cross domain safe WeakMap.

Downloads

257,510

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

gregjopagregjopabluepnumebluepnumewsbrunsonwsbrunsonwesteezywesteezy

Keywords

template

Readme

Cross Domain Safe WeakMap

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

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.