Transforming an arrow function into a regular function in JavaScript

unarrow.js

const unarrow = arrowFunc => {
  const arrowFuncDefinition = arrowFunc.toString();
  const hasEnclosingBraces = arrowFuncDefinition.indexOf('}') === arrowFuncDefinition.length - 1;

  const newDefinition =
    `return function${
      hasEnclosingBraces ?
        arrowFuncDefinition.replace('=>', '') :
        arrowFuncDefinition.replace('=>', '{return ') + '}'
    }`;

  return new Function(newDefinition)();
};

export default unarrow;