Add more logging around git commit failure (#467)

Help with #464

Co-authored-by: William Chen <will@mac.lan>

src/ipc/handlers/testing_chat_handlers.ts

@@ -18,6 +18,11 @@ const TEST_RESPONSES: Record<string, string> = {
   
   <dyad-add-dependency packages="react-router-dom react-query"></dyad-add-dependency>
   
+  EOM`,
+  write: `Hello world
+  <dyad-write path="src/hello.ts" content="Hello world">
+  console.log("Hello world");
+  </dyad-write>
   EOM`,
   "string-literal-leak": `BEFORE TAG
   <dyad-write path="src/pages/locations/neighborhoods/louisville/Highlands.tsx" description="Updating Highlands neighborhood page to use <a> tags.">

src/ipc/utils/git_utils.ts

@@ -9,6 +9,23 @@ import { readSettings } from "../../main/settings";
 
 const execAsync = promisify(exec);
 
+async function verboseExecAsync(
+  command: string,
+): Promise<{ stdout: string; stderr: string }> {
+  try {
+    return await execAsync(command);
+  } catch (error: any) {
+    let errorMessage = `Error: ${error.message}`;
+    if (error.stdout) {
+      errorMessage += `\nStdout: ${error.stdout}`;
+    }
+    if (error.stderr) {
+      errorMessage += `\nStderr: ${error.stderr}`;
+    }
+    throw new Error(errorMessage);
+  }
+}
+
 export async function gitCommit({
   path,
   message,
@@ -24,7 +41,8 @@ export async function gitCommit({
     if (amend) {
       command += " --amend";
     }
-    await execAsync(command);
+
+    await verboseExecAsync(command);
     const { stdout } = await execAsync(`git -C "${path}" rev-parse HEAD`);
     return stdout.trim();
   } else {