in transforms/manual-bind-to-arrow.js [38:47]
function createArrowFunctionExpression(fn) {
var arrowFunc = j.arrowFunctionExpression(fn.params, fn.body, false);
arrowFunc.returnType = fn.returnType;
arrowFunc.defaults = fn.defaults;
arrowFunc.rest = fn.rest;
arrowFunc.async = fn.async;
return arrowFunc;
}