⚡ Switch to async check

packages/cli/src/Server.ts

@@ -30,7 +30,7 @@
 /* eslint-disable no-await-in-loop */
 
 import express from 'express';
-import { readFileSync, existsSync } from 'fs';
+import { readFileSync, promises } from 'fs';
 import { readFile } from 'fs/promises';
 import _, { cloneDeep } from 'lodash';
 import { dirname as pathDirname, join as pathJoin, resolve as pathResolve } from 'path';
@@ -1504,7 +1504,11 @@ class App {
 					const packagesPath = pathJoin(__dirname, '..', '..', '..');
 					const headersPath = pathJoin(packagesPath, 'nodes-base', 'dist', 'nodes', 'headers');
 
-					if (!existsSync(`${headersPath}.js`)) return;
+					try {
+						await promises.access(`${headersPath}.js`);
+					} catch (_) {
+						return; // no headers available
+					}
 
 					try {
 						return require(headersPath);