Urgent: Need a Node.js developer

Please use async/await for Javascript

I need JS code which can do the following: the Main.js is the root file and in the same level, there will be folder1, folder2, folder3.

1. Main.js contains two objects: data, result

2. Main.js opens a folder called folder_name1, finds any .js files in the folder, and executes them one by one.

3. Main.js then opens a folder called folder_name2, finds any .js files in the folder, and executes them one by one.

4. Main.js then opens a folder called folder_name3, finds any .js files in the folder, and executes them one by one.

5. Finally, main.js executes a function.

Important notes:

A) The ordering of execution must be 2 -> 3 -> 4 -> 5.
This means when all of (2) is done, it will then execute (3);
when all of (3) is done, it will then execute (4); finally when (4) it done it will execute (5).

B) Each of the .js files in each of the folders are simple functions like this:

function my_function (data, result) {

// do something (it'll take sometime, you can use setTimeout() here, so that delay the time, for example.

return result;
}

module.exports = my_function;

As you can see, the function is accepting the two objects from main.js, and returning the result object.
So your code will open each .js file and execute the single exported function in it.

Your code should be as simple as possible.
If you make a good deliverable, there'll be a lot of big projects.