AMR/node_modules/babel-plugin-transform-vue-jsx/lib/make-map.js

module.exports = function makeMap (str) {
  var map = Object.create(null)
  var list = str.split(',')
  for (var i = 0; i < list.length; i++) {
    map[list[i]] = true
  }
  return val => map[val]
}