Remove inProcess option as it's not used

packages/next-swc/crates/napi/src/turbo_trace_server.rs

@@ -1,17 +1,7 @@
-use std::{path::PathBuf, thread};
-
-use napi::JsBoolean;
+use std::path::PathBuf;
 
 #[napi]
-pub fn start_turbopack_trace_server(path: String, in_process: JsBoolean) -> napi::Result<String> {
+pub fn start_turbopack_trace_server(path: String) {
     let path_buf = PathBuf::from(path);
-    if in_process.get_value()? {
-        turbopack_binding::turbopack::trace_server::start_turbopack_trace_server(path_buf);
-    } else {
-        thread::spawn(move || {
-            turbopack_binding::turbopack::trace_server::start_turbopack_trace_server(path_buf);
-        });
-    }
-
-    Ok("".to_string())
+    turbopack_binding::turbopack::trace_server::start_turbopack_trace_server(path_buf);
 }

packages/next/src/build/swc/index.ts

@@ -161,7 +161,7 @@ export interface Binding {
       options: ProjectOptions,
       turboEngineOptions?: TurboEngineOptions
     ) => Promise<Project>
-    startTurbopackTraceServer: (path: string, inProcess: boolean) => void
+    startTurbopackTraceServer: (path: string) => void
   }
   mdx: {
     compile: any
@@ -1483,14 +1483,11 @@ function loadNative(importPath?: string) {
           },
         },
         createProject: bindingToApi(customBindings ?? bindings, false),
-        startTurbopackTraceServer: (traceFilePath, inProcess) => {
+        startTurbopackTraceServer: (traceFilePath) => {
           Log.warn(
             'Turbopack trace server started. View trace at https://turbo-trace-viewer.vercel.app/'
           )
-          ;(customBindings ?? bindings).startTurbopackTraceServer(
-            traceFilePath,
-            inProcess
-          )
+          ;(customBindings ?? bindings).startTurbopackTraceServer(traceFilePath)
         },
       },
       mdx: {

packages/next/src/cli/internal/turbo-trace-server.ts

@@ -2,5 +2,5 @@ import { loadBindings } from '../../build/swc'
 
 export async function startTurboTraceServerCli(file: string) {
   let bindings = await loadBindings()
-  bindings.turbo.startTurbopackTraceServer(file, true)
+  bindings.turbo.startTurbopackTraceServer(file)
 }