What does this line mean in ES6?

Question

JavaScript

Opened the sources of the React Project. this is the variable Action(Redux)
In the first line, "e" is the parameter of the arrow function that we assign to the handleChange constant. Then I don’t understand what is happening ... there are several options, I don’t understand how it works.

export const handleChange = e => dispatch => {    //   <- Эта строка
  dispatch({
    type: PROMO_CODE,
    payload: e.target.value
  });
};

Answer 1

You can just paste https://babeljs.io/repl here and see the result

"use strict";

var handleChange = function handleChange(e) {
  return function (dispatch) {
    dispatch({
      type: PROMO_CODE,
      payload: e.target.value
    });
  };
};