//简写不可以
const Foo = resolve => require(['./Foo.vue'], resolve)
// 这种写法正常
const Foo = resolve => {
// require.ensure 是 Webpack 的特殊语法,用来设置 code-split point
// (代码分块)
require.ensure(['./Foo.vue'], () => {
resolve(require('./Foo.vue'))
})
}