Coding⏱️ 2 min read📅 2026-06-03

How to Fix: File 'app/hero.ts' is not a module error in the console, where to store interfaces files in directory structure with angular2?

TS2306 error in Angular2, interface file location.

Quick Answer: Move the interface file to a separate 'models' or 'interfaces' folder within the app directory.

To fix the error 'File 'app/hero.ts' is not a module' in Angular2, you need to understand that interfaces should be defined in separate files and imported into other components.

🛠️ Step-by-Step Verified Fixes

Method 1: Create a Separate Hero Interface File

  1. Step 1: Move the hero interface from app/hero.ts to a new file, e.g., app/hero.interface.ts.

Method 2: Organize Your Interface Files in a Hero Folder

  1. Step 1: Create a new folder named 'hero' inside the 'app' directory.

By following these steps, you will be able to resolve the error and correctly define your interfaces in Angular2.

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