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docs: clarify PostMessageTransport target origin #777

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docs: clarify PostMessageTransport target origin #777

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5 changes: 3 additions & 2 deletions src/message-transport.ts
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Expand Up @@ -115,8 +115,9 @@ export class PostMessageTransport implements Transport {
/**
* Send a JSON-RPC message to the target window.
*
* Messages are sent using `postMessage` with `"*"` origin, meaning they are visible
* to all frames. The receiver should validate the message source for security.
* Messages are sent to the `eventTarget` window using `postMessage` with
* `"*"` as `targetOrigin`, allowing delivery regardless of that window's
* origin. The receiver should validate the message source for security.
*
* @param message - JSON-RPC message to send
* @param options - Optional send options (currently unused)
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