JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>

JavaScript

$(document).ready(function() {
  var d = flatten(data);
  console.log(Object.keys(d));
});

var flatten = (objectOrArray, prefix = '', formatter = (k) => (k)) => {
  const nestedFormatter = (k) => ('.' + k)
  const nestElement = (prev, value, key) => (
    (value && typeof value === 'object')
      ? { ...prev, ...flatten(value, `${prefix}${formatter(key)}`, nestedFormatter) }
      : { ...prev, ...{ [`${prefix}${formatter(key)}`]: value } });

  return Array.isArray(objectOrArray)
    ? objectOrArray.reduce(nestElement, {})
    : Object.keys(objectOrArray).reduce(
      (prev, element) => nestElement(prev, objectOrArray[element], element),
      {},
    );
};

var data = {
  "ticker": "AAPL",
  "name": "Apple",
  "data": [
    1,2,3,4
  ],
  "obj": [
    {"revenue": 1, "income": 11},
    {"revenue": 2, "income": 22},
  ],
}