babel-core/lib/babel/transformation/transformers/es6/arrow-functions.js

Turn ES6 code into readable vanilla ES5 with source maps

"use strict";

var t = require("../../../types");

exports.check = t.isArrowFunctionExpression;

exports.ArrowFunctionExpression = function (node) {
  t.ensureBlock(node);

  node._aliasFunction = "arrow";
  node.expression = false;
  node.type = "FunctionExpression";

  return node;
};