fix(lsp): MEMORY LEAK: ensure typescript server uses native project config (#19953)

packages/opencode/test/lsp/index.test.ts

@@ -1,6 +1,8 @@
 import { describe, expect, spyOn, test } from "bun:test"
 import path from "path"
+import fs from "fs/promises"
 import * as Lsp from "../../src/lsp/index"
+import * as launch from "../../src/lsp/launch"
 import { LSPServer } from "../../src/lsp/server"
 import { Instance } from "../../src/project/instance"
 import { tmpdir } from "../fixture/fixture"
@@ -52,4 +54,80 @@ describe("lsp.spawn", () => {
       await Instance.disposeAll()
     }
   })
+
+  test("spawns builtin Typescript LSP with correct arguments", async () => {
+    await using tmp = await tmpdir()
+    
+    // Create dummy tsserver to satisfy Module.resolve
+    const tsdk = path.join(tmp.path, "node_modules", "typescript", "lib")
+    await fs.mkdir(tsdk, { recursive: true })
+    await fs.writeFile(path.join(tsdk, "tsserver.js"), "")
+
+    const spawnSpy = spyOn(launch, "spawn").mockImplementation(
+      () =>
+        ({
+          stdin: {},
+          stdout: {},
+          stderr: {},
+          on: () => {},
+          kill: () => {},
+        }) as any,
+    )
+
+    try {
+      await Instance.provide({
+        directory: tmp.path,
+        fn: async () => {
+          await LSPServer.Typescript.spawn(tmp.path)
+        },
+      })
+
+      expect(spawnSpy).toHaveBeenCalled()
+      const args = spawnSpy.mock.calls[0][1] as string[]
+
+      expect(args).toContain("--tsserver-path")
+      expect(args).toContain("--tsserver-log-verbosity")
+      expect(args).toContain("off")
+    } finally {
+      spawnSpy.mockRestore()
+    }
+  })
+
+  test("spawns builtin Typescript LSP with --ignore-node-modules if no config is found", async () => {
+    await using tmp = await tmpdir()
+
+    // Create dummy tsserver to satisfy Module.resolve
+    const tsdk = path.join(tmp.path, "node_modules", "typescript", "lib")
+    await fs.mkdir(tsdk, { recursive: true })
+    await fs.writeFile(path.join(tsdk, "tsserver.js"), "")
+
+    // NO tsconfig.json or jsconfig.json created here
+
+    const spawnSpy = spyOn(launch, "spawn").mockImplementation(
+      () =>
+        ({
+          stdin: {},
+          stdout: {},
+          stderr: {},
+          on: () => {},
+          kill: () => {},
+        }) as any,
+    )
+
+    try {
+      await Instance.provide({
+        directory: tmp.path,
+        fn: async () => {
+          await LSPServer.Typescript.spawn(tmp.path)
+        },
+      })
+
+      expect(spawnSpy).toHaveBeenCalled()
+      const args = spawnSpy.mock.calls[0][1] as string[]
+
+      expect(args).toContain("--ignore-node-modules")
+    } finally {
+      spawnSpy.mockRestore()
+    }
+  })
 })