diff --git a/.changeset/rude-spoons-compete.md b/.changeset/rude-spoons-compete.md
new file mode 100644
index 00000000000..c3ff5ccff7d
--- /dev/null
+++ b/.changeset/rude-spoons-compete.md
@@ -0,0 +1,5 @@
+---
+"@trigger.dev/cli": patch
+---
+
+Bugfix: @trigger.dev/cli init now correctly identifies the App Dir when using JS
diff --git a/packages/cli/src/commands/init.ts b/packages/cli/src/commands/init.ts
index 16b0ae9126d..7bdf7671899 100644
--- a/packages/cli/src/commands/init.ts
+++ b/packages/cli/src/commands/init.ts
@@ -117,7 +117,7 @@ export const initCommand = async (options: InitCommandOptions) => {
     logger.info("📁 Detected use of src directory");
   }
 
-  const nextJsDir = await detectPagesOrAppDir(resolvedPath, usesSrcDir, isTypescriptProject);
+  const nextJsDir = await detectPagesOrAppDir(resolvedPath, usesSrcDir);
 
   const routeDir = pathModule.join(resolvedPath, usesSrcDir ? "src" : "");
 
@@ -283,7 +283,6 @@ async function detectUseOfSrcDir(path: string): Promise<boolean> {
 async function detectPagesOrAppDir(
   path: string,
   usesSrcDir = false,
-  isTypescriptProject = false
 ): Promise<"pages" | "app"> {
   const nextConfigPath = pathModule.join(path, "next.config.js");
   const importedConfig = await import(pathToFileURL(nextConfigPath).toString()).catch(() => ({}));
@@ -296,14 +295,16 @@ async function detectPagesOrAppDir(
     // If so then we return app
     // If not return pages
 
-    const extension = isTypescriptProject ? "tsx" : "js";
+    const extensionsToCheck = ["jsx", "tsx", "js", "ts"];
+    const basePath = pathModule.join(path, usesSrcDir ? "src" : "", "app", `page.`);
 
-    const appPagePath = pathModule.join(path, usesSrcDir ? "src" : "", "app", `page.${extension}`);
+    for (const extension of extensionsToCheck) {
+      const appPagePath = basePath + extension;
+      const appPageExists = await pathExists(appPagePath);
 
-    const appPageExists = await pathExists(appPagePath);
-
-    if (appPageExists) {
-      return "app";
+      if (appPageExists) {
+        return "app";
+      }
     }
 
     return "pages";