From b4440df0cfdd018373dc8fb33c495636db0ea843 Mon Sep 17 00:00:00 2001
From: Ezira Ashenafi <eazash22@gmail.com>
Date: Wed, 3 Sep 2025 13:48:24 +0300
Subject: [PATCH] chore(cli): generate profiler output file on process exit
 event

---
 .../graphql-codegen-cli/src/generate-and-save.ts    | 13 ++++++++-----
 .../graphql-codegen-cli/src/utils/file-system.ts    |  6 +++++-
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/packages/graphql-codegen-cli/src/generate-and-save.ts b/packages/graphql-codegen-cli/src/generate-and-save.ts
index b95511219b7..9dc20aa452e 100644
--- a/packages/graphql-codegen-cli/src/generate-and-save.ts
+++ b/packages/graphql-codegen-cli/src/generate-and-save.ts
@@ -5,7 +5,7 @@ import { executeCodegen } from './codegen.js';
 import { CodegenContext, ensureContext } from './config.js';
 import { lifecycleHooks } from './hooks.js';
 import { debugLog } from './utils/debugging.js';
-import { mkdirp, readFile, unlinkFile, writeFile } from './utils/file-system.js';
+import { mkdirp, readFile, unlinkFile, writeFile, writeFileSync } from './utils/file-system.js';
 import { createWatcher } from './utils/watcher.js';
 
 const hash = (content: string): string => createHash('sha1').update(content).digest('base64');
@@ -128,6 +128,13 @@ export async function generate(
     return generationResult;
   }
 
+  // Register on exit listener to write profiler output
+  process.on('exit', () => {
+    if (context.profilerOutput) {
+      writeFileSync(join(context.cwd, context.profilerOutput), JSON.stringify(context.profiler.collect()));
+    }
+  });
+
   // watch mode
   if (config.watch) {
     return createWatcher(context, writeOutput).runningWatcher;
@@ -138,10 +145,6 @@ export async function generate(
   await context.profiler.run(() => writeOutput(outputFiles), 'writeOutput');
   await context.profiler.run(() => lifecycleHooks(config.hooks).beforeDone(), 'Lifecycle: beforeDone');
 
-  if (context.profilerOutput) {
-    await writeFile(join(context.cwd, context.profilerOutput), JSON.stringify(context.profiler.collect()));
-  }
-
   return outputFiles;
 }
 
diff --git a/packages/graphql-codegen-cli/src/utils/file-system.ts b/packages/graphql-codegen-cli/src/utils/file-system.ts
index 9fd9b3189ef..93b3c043ba9 100644
--- a/packages/graphql-codegen-cli/src/utils/file-system.ts
+++ b/packages/graphql-codegen-cli/src/utils/file-system.ts
@@ -1,4 +1,4 @@
-import { promises, unlink as fsUnlink } from 'fs';
+import { promises, unlink as fsUnlink, writeFileSync as fsWriteFileSync } from 'fs';
 
 const { access: fsAccess, writeFile: fsWriteFile, readFile: fsReadFile, mkdir } = promises;
 
@@ -10,6 +10,10 @@ export function writeFile(filepath: string, content: string) {
   return fsWriteFile(filepath, content);
 }
 
+export function writeFileSync(filepath: string, content: string) {
+  return fsWriteFileSync(filepath, content);
+}
+
 export function readFile(filepath: string) {
   return fsReadFile(filepath, 'utf-8');
 }