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postmessage-library

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A small library to make two-way communication between a VS Code extension host and a React webview simple and type‑safe. Supports both UDF reducer and RPC promises.

  • Updated Jul 4, 2026
  • TypeScript

Promise-based iframe communication for TypeScript. A one-time postMessage handshake hands the iframe a private MessageChannel port; then send() / reply.accept() / reply.decline() over that MessagePort, with timeouts, heartbeat and auto-reconnect. Cross-origin, zero dependencies.

  • Updated Mar 12, 2025
  • TypeScript

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