babelify 转换不转译胖箭头

Question

全新安装 browserify 后，以下内容对我不起作用：

browserify main.js -o bundle.js -t babelify

main.js的内容是：

var x = () => { return 5 }
console.log(x);

returns粗箭头完好无损，导致浏览器报错：

(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var x = () => {
  return 5;
};
console.log(x);

},{}]},{},[1]);

我错过了哪一步？

更新

添加到 Felix King 的答案中，为了后代，括号之间的间距 ] ] 很重要：我之前用 ]] 尝试过同样的事情，但没有用。

Answer 1

来自babelify README：

As of Babel 6.0.0 there are no plugins included by default. For babelify to be useful, you must also include some presets and/or plugins.

[...]
$ browserify script.js -o bundle.js \
-t [ babelify --presets [ es2015 react ] ]

babelify 转换不转译胖箭头

babelify transform not transpiling fat arrow

javascript

browserify

babeljs

更新