Fix onhostcontextchanged handler invocation in examples
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`App.onhostcontextchanged` is a setter-only property with no getter. TypeScript doesn't prevent reading from setter-only properties, so `app.onhostcontextchanged?.(ctx)` compiles but silently returns `undefined` at runtime. Extract the handler into a named `handleHostContextChanged()` function and call it directly after `connect()`, matching the pattern used in `basic-server-vanillajs` and other examples. Co-Authored-By: Claude Opus 4.5 <[email protected]>
@modelcontextprotocol/ext-apps
@modelcontextprotocol/server-basic-react
@modelcontextprotocol/server-basic-vanillajs
@modelcontextprotocol/server-budget-allocator
@modelcontextprotocol/server-cohort-heatmap
@modelcontextprotocol/server-customer-segmentation
@modelcontextprotocol/server-map
@modelcontextprotocol/server-pdf
@modelcontextprotocol/server-scenario-modeler
@modelcontextprotocol/server-shadertoy
@modelcontextprotocol/server-sheet-music
@modelcontextprotocol/server-system-monitor
@modelcontextprotocol/server-threejs
@modelcontextprotocol/server-transcript
@modelcontextprotocol/server-video-resource
@modelcontextprotocol/server-wiki-explorer
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jonathanhefner
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ochafik
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Jan 26, 2026
…etter Fix `onhostcontextchanged` handler invocation in examples
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App.onhostcontextchangedis a setter-only property with no getter. TypeScript doesn't prevent reading from setter-only properties, soapp.onhostcontextchanged?.(ctx)compiles but silently returnsundefinedat runtime.Extract the handler into a named
handleHostContextChanged()function and call it directly afterconnect(), matching the pattern used inbasic-server-vanillajsand other examples.