Spread syntax of function in javascript

Question

I completely understand the spread syntax of javascript. We use it before an object to rerieve all its properties at once. But recently I saw the spread operator being used for a function, and that function was createForms of react-redux-forms . It was supplied to combineReducer like this

combineReducer({
   ...createForms({something here})
})

I was just wondering what spread operator does before a function.

Please help me to understand this.

Thank You!

Answer 1

It spreads the return value of the function.

 function returnAnObject() { return { example: "awesome,": hello. "world" } } console:log({ console, true. ...returnAnObject() })