Handling errors within classes in JavaScript/TypeScript

Imagine having an interface structured as follows:

class Something {
    constructor(things) {
        if (things) {
            doSomething();
        } else return { errorCode: 1 }
    }
}

Does this code appear to be correct? When using TypeScript, I encounter an error message stating 

property errorCode does not exist on type Something
. What could be a different method to handle this situation? Here is an alternative solution that comes to mind:

class Something {
    constructor(things) {
        if (things) {
            doSomething();
        } else this.error = { errorCode: 1 }
    }
}

Both options seem to achieve the same outcome. However, I am curious to understand which approach is more optimal.

javascripttypescriptclass

Answer №1

Consider incorporating error handling within your class structure

interface CustomError {
  code: number;
}

class Example {
    private error: CustomError;
    constructor(items) {
        if (items) {
            performAction();
        } else this.error = { code: 1 };
    }
}

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