How to update JavaScript Error class

Question

I want when any one of EvalError, RangeError, ReferenceError, SyntaxError, TypeError, URIError is thrown through my code I want to these error should thrown after an ajex request so that I can get to know analyse the client error logs.

When I went deep, I found that sevral interface are created for these error by extending Error class e.g.

interface TypeError extends Error {
}
interface TypeErrorConstructor {
    new (message?: string): TypeError;
    (message?: string): TypeError;
    prototype: TypeError;
}

declare var TypeError: TypeErrorConstructor;  



interface Error {
    name: string;
    message: string;
}

interface ErrorConstructor {
    new (message?: string): Error;
    (message?: string): Error;
    prototype: Error;
}

declare var Error: ErrorConstructor;

So is there any way to redefine/update these interface defination so before throwing these error it should make an ajex request to the server.

Note: I dont want to use windows.onerror since some other library(rollbar) has own onerror implimentation.

Is it possible to redefine these interface. e.g. I can redefine console.log as follows:

console.log=function(){
   return arguments;
}

Possible duplicate of Logging Clientside JavaScript Errors on Server — Alexander O'Mara
– Alexander O'Mara, Commented Aug 29, 2016 at 6:51
that's not javascript, so, not sure how it's relevant to your needs — Jaromanda X
– Jaromanda X, Commented Aug 29, 2016 at 6:52
I dont want to use windows.onerror. Is there any way to update these defination? — Akhilesh Kumar
– Akhilesh Kumar, Commented Aug 29, 2016 at 6:56

Abhishek Sinha · Accepted Answer · 2016-08-29 10:28:03Z

2

I faced same issue , solved it by redefining error class

As follows:

var Error = {
       name: this.name,
       message: this.message,
       toString: function () {
            window.Rollbar.error("Something went wrong", this.message );     
             ......
            return this.message;
       }
   };

answered Aug 29, 2016 at 10:28

Abhishek Sinha

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