fix(plugins): keep built plugin loading on one module graph (#48595)

tsdown.config.ts

@@ -1,13 +1,30 @@
 import fs from "node:fs";
 import path from "node:path";
-import { defineConfig } from "tsdown";
+import { defineConfig, type UserConfig } from "tsdown";
 import { buildPluginSdkEntrySources } from "./scripts/lib/plugin-sdk-entries.mjs";
 
+type InputOptionsFactory = Extract<NonNullable<UserConfig["inputOptions"]>, Function>;
+type InputOptionsArg = InputOptionsFactory extends (
+  options: infer Options,
+  format: infer _Format,
+  context: infer _Context,
+) => infer _Return
+  ? Options
+  : never;
+type InputOptionsReturn = InputOptionsFactory extends (
+  options: infer _Options,
+  format: infer _Format,
+  context: infer _Context,
+) => infer Return
+  ? Return
+  : never;
+type OnLogFunction = InputOptionsArg extends { onLog?: infer OnLog } ? NonNullable<OnLog> : never;
+
 const env = {
   NODE_ENV: "production",
 };
 
-function buildInputOptions(options: { onLog?: unknown; [key: string]: unknown }) {
+function buildInputOptions(options: InputOptionsArg): InputOptionsReturn {
   if (process.env.OPENCLAW_BUILD_VERBOSE === "1") {
     return undefined;
   }
@@ -32,11 +49,8 @@ function buildInputOptions(options: { onLog?: unknown; [key: string]: unknown })
 
   return {
     ...options,
-    onLog(
-      level: string,
-      log: { code?: string; message?: string; id?: string; importer?: string },
-      defaultHandler: (level: string, log: { code?: string }) => void,
-    ) {
+    onLog(...args: Parameters<OnLogFunction>) {
+      const [level, log, defaultHandler] = args;
       if (isSuppressedLog(log)) {
         return;
       }
@@ -49,7 +63,7 @@ function buildInputOptions(options: { onLog?: unknown; [key: string]: unknown })
   };
 }
 
-function nodeBuildConfig(config: Record<string, unknown>) {
+function nodeBuildConfig(config: UserConfig): UserConfig {
   return {
     ...config,
     env,
@@ -112,6 +126,33 @@ function listBundledPluginBuildEntries(): Record<string, string> {
 
 const bundledPluginBuildEntries = listBundledPluginBuildEntries();
 
+function buildBundledHookEntries(): Record<string, string> {
+  const hooksRoot = path.join(process.cwd(), "src", "hooks", "bundled");
+  const entries: Record<string, string> = {};
+
+  if (!fs.existsSync(hooksRoot)) {
+    return entries;
+  }
+
+  for (const dirent of fs.readdirSync(hooksRoot, { withFileTypes: true })) {
+    if (!dirent.isDirectory()) {
+      continue;
+    }
+
+    const hookName = dirent.name;
+    const handlerPath = path.join(hooksRoot, hookName, "handler.ts");
+    if (!fs.existsSync(handlerPath)) {
+      continue;
+    }
+
+    entries[`bundled/${hookName}/handler`] = handlerPath;
+  }
+
+  return entries;
+}
+
+const bundledHookEntries = buildBundledHookEntries();
+
 function buildCoreDistEntries(): Record<string, string> {
   return {
     index: "src/index.ts",
@@ -130,33 +171,34 @@ function buildCoreDistEntries(): Record<string, string> {
     "line/accounts": "src/line/accounts.ts",
     "line/send": "src/line/send.ts",
     "line/template-messages": "src/line/template-messages.ts",
+    "plugins/runtime/index": "src/plugins/runtime/index.ts",
+    "llm-slug-generator": "src/hooks/llm-slug-generator.ts",
   };
 }
 
 const coreDistEntries = buildCoreDistEntries();
 
+function buildUnifiedDistEntries(): Record<string, string> {
+  return {
+    ...coreDistEntries,
+    ...Object.fromEntries(
+      Object.entries(buildPluginSdkEntrySources()).map(([entry, source]) => [
+        `plugin-sdk/${entry}`,
+        source,
+      ]),
+    ),
+    ...bundledPluginBuildEntries,
+    ...bundledHookEntries,
+  };
+}
+
 export default defineConfig([
   nodeBuildConfig({
-    // Build the root dist entrypoints together so they can share hashed chunks
-    // instead of emitting near-identical copies across separate builds.
-    entry: coreDistEntries,
-  }),
-  nodeBuildConfig({
-    // Bundle all plugin-sdk entries in a single build so the bundler can share
-    // common chunks instead of duplicating them per entry (~712MB heap saved).
-    entry: buildPluginSdkEntrySources(),
-    outDir: "dist/plugin-sdk",
-  }),
-  nodeBuildConfig({
-    // Bundle bundled plugin entrypoints so built gateway startup can load JS
-    // directly from dist/extensions instead of transpiling extensions/*.ts via Jiti.
-    entry: bundledPluginBuildEntries,
-    outDir: "dist",
+    // Build core entrypoints, plugin-sdk subpaths, bundled plugin entrypoints,
+    // and bundled hooks in one graph so runtime singletons are emitted once.
+    entry: buildUnifiedDistEntries(),
     deps: {
       neverBundle: ["@lancedb/lancedb"],
     },
   }),
-  nodeBuildConfig({
-    entry: ["src/hooks/bundled/*/handler.ts", "src/hooks/llm-slug-generator.ts"],
-  }),
 ]);