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Express And Typescript Error Stack And Error Status Properties Do Not Exist

Have you encountered an issue where you're coding in Express with TypeScript and got stuck because you can't find the stack and status properties for errors? Fret not, for I'm here to guide you through this common roadblock. In this article, we'll delve into addressing the specific challenge of missing error stack and error status properties in Express and TypeScript.

When you are working with Express and TypeScript, you might have noticed that the error objects in the framework do not have the standard `stack` and `status` properties that you might expect. This can be a bit confusing, especially if you are used to handling errors in other environments where these properties are readily available.

To resolve this issue and regain access to these crucial error properties, you can employ a simple workaround that involves extending the base Error object in TypeScript. By extending the Error class, you can add custom properties like `stack` and `status` to your error instances. This approach allows you to have more control over your error objects and include additional information that might be helpful for debugging and error handling.

To implement this solution, you can create a new class that extends the Error object and defines the extra properties you need. Here's an example of how you can achieve this:

Typescript

class CustomError extends Error {
  constructor(message: string, status: number) {
    super(message);
    this.status = status;
    this.stack = (new Error()).stack;
  }
  status: number;
}

In this code snippet, we define a `CustomError` class that extends the built-in `Error` class. The constructor of the `CustomError` class takes the error message and status code as parameters and assigns them to the instance properties `message`, `status`, and `stack`. By calling `(new Error()).stack`, we retrieve the stack trace of the error instance.

Once you have this custom error class in place, you can utilize it to create error instances with the desired `status` and `stack` properties. This empowers you to handle errors more effectively within your Express application while leveraging the benefits of TypeScript's type checking and error handling capabilities.

By taking this approach, you can enhance the error management process in your Express and TypeScript projects and gain access to critical error information that can aid in troubleshooting and resolving issues more efficiently. So, the next time you face the absence of `stack` and `status` properties in Express with TypeScript, remember to extend the Error class and customize your error objects to suit your needs.

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