What is the best way to display the source code of a function in TypeScript?

I am interested in obtaining the source code for my TypeScript function ** written in TypeScript **.

Here is the TypeScript code:

var fn = function (a:number, b:number) {
   return a + b;
};

console.log("Code: " + fn);

This code snippet displays the JavaScript version of the function,

Code: function (a, b) {
        return a + b;
    }

However, I would prefer to have the original TypeScript code, preferably with type information. Especially when utilizing this within the function, the converted JavaScript output may not appear as elegant.

Answer №1

If you want to include type annotations in your Typescript code, you will need to create a custom string literal that contains the Typescript source code. Remember, Typescript is compiled down to Javascript, which means the code that actually runs is Javascript:

"use strict";
var fn = function (a, b) {
    return a + b;
};
console.log("Code: " + fn);

As shown in the code above, there are no type annotations present, so it's impossible for this code snippet to display those annotations on the console.

Check out the Playground Link for reference.

Answer №2

Unfortunately, that's not feasible. Have you considered utilizing source-maps instead?

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