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docs/snippets/wasm/plugins/unregister_plugins.md

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+# Unregister Plugins
+
+Remove registered plugins from the WASM runtime using individual unregister or bulk clear operations.
+
+```typescript title="WASM"
+import init, {
+  registerDocumentExtractor,
+  unregisterDocumentExtractor,
+  listDocumentExtractors,
+  clearDocumentExtractors,
+  registerOcrBackend,
+  unregisterOcrBackend,
+  listOcrBackends,
+  clearOcrBackends,
+  registerPostProcessor,
+  unregisterPostProcessor,
+  listPostProcessors,
+  clearPostProcessors,
+  registerRenderer,
+  unregisterRenderer,
+  listRenderers,
+  clearRenderers,
+  registerValidator,
+  unregisterValidator,
+  listValidators,
+  clearValidators,
+} from "kreuzberg-wasm";
+
+await init();
+
+// Example: register a custom document extractor
+const extractor = {
+  extractBytes: async (bytes, mimeType, config) => {
+    return JSON.stringify({ text: "test", page_count: 1 });
+  },
+  supportedMimeTypes: () => JSON.stringify(["application/x-test"]),
+};
+
+registerDocumentExtractor(extractor);
+console.log("Registered extractors:", listDocumentExtractors());
+
+// Individual unregistration by plugin name
+try {
+  unregisterDocumentExtractor("wasm_bridge");
+  console.log("Extractor unregistered");
+} catch (error) {
+  console.error("Unregister failed:", error);
+}
+
+// Clear all plugins of a type
+clearPostProcessors();
+console.log("After clearPostProcessors:", listPostProcessors());
+
+clearOcrBackends();
+console.log("After clearOcrBackends:", listOcrBackends());
+
+clearRenderers();
+console.log("After clearRenderers:", listRenderers());
+
+clearValidators();
+console.log("After clearValidators:", listValidators());
+
+// Selective re-registration: clear and register only desired plugins
+clearPostProcessors();
+const myProcessor = {
+  processingStage: () => "post-extraction",
+  process: (result) => result, // Pass-through
+};
+registerPostProcessor(myProcessor);
+console.log("After selective re-register:", listPostProcessors());
+
+// Unregister specific plugin by name
+unregisterPostProcessor("wasm_bridge");
+console.log("After selective unregister:", listPostProcessors());
+```
+
+Use `unregister*` to remove individual plugins by name, or `clear*` for bulk removal of all plugins of a type. All custom plugins are registered with the default name `"wasm_bridge"` managed by the bridge.