cross-domain-storage
JSON →cross-domain-storage v2.0.7 enables browser-localStorage sharing across subdomains and parent/child windows via postMessage. Low-maintenance, no new releases since 2016. Ideal for simple cross-origin persistence without server-side setup. Minimal API, uses iframe or window messaging. Lightweight, no external dependencies.
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Resources
packagecross-domain-storage ↗
API endpoints
full doc /v1/registry/cross-domain-storage