Is there a specific type of function missing in Typescript?

I am facing a challenge in converting an existing JavaScript code to Typescript. The original javascript code is as follows:

object.getsomething( function(err, result) {
    // async
});

I am confused about how to properly type the parameter "function(err,result)".

My attempt at typing it was 

retrieve(func: function(err:string, result:string) : any){}

However, my code editor's intellisense indicates that "err" and "result" cannot be found. Additionally, I couldn't find any documentation on the "function" type.

typescript

Answer №1

If you want to utilize the "fat arrow" syntax, you can do so in the following manner:

fetch(func: (error: string, output: string) => any) { ... }

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