I'm trying to enhance the standard JavaScript Error class by adding another property called code, but for some reason, TypeScript is not allowing me to do so. Here is the code snippet:
export class HttpError extends Error {
public message: string
public errorCode: number
constructor(message: string, errorCode: number) {
super(message)
(this as any).code = errorCode
}
}
The error occurs at the super(message) line and it says:
This expression is not callable.
Type 'void' has no call signatures.ts(2349)
Interestingly, I found in the TypeScript documentation that a similar approach is used: https://www.typescriptlang.org/docs/handbook/classes.html
Can anyone spot what might be wrong with my code?