Package Exports
- cross-domain-safe-weakmap
- cross-domain-safe-weakmap/src
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (cross-domain-safe-weakmap) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
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.