import export

export
type.js
export const a = 1
export const b = [1,2,3]
export function c(){...}
export const d = function (){...}
等价于
const a = 1
const b = [1,2,3]
function c(){...}
const d = function (){...}
export {a,b,c,d}
// 导出
import {a,b,a,d} from '@/utils/type'

export + export default
export default
export default function (name) {
	console.log(name)
}
// 导出
import file from '@/utils/type' 
file(5)  // 5

export + export default
// 导出
export const fileType = function (name) {
	console.log(name)
}
export default function (name) {
	console.log(name)
}
// 导入
import * as fileType from '@/utils/type'
fileType.fileType ('aaa')	// aaa
fileType.default ('sss')	// sss
// 或者
import fileTypedefault,{ fileType } from '@/utils/type'
fileType ('aaa')	// aaa
fileTypedefault ('sss')	// sss

export default 注意事项
export default后面不可以用 var、let、const 可用 export default function(){} function add(){}

as关键字
export function sampleA (name) {
  console.log(name)
}
export function sampleB (name) {
  console.log(name)
}
export function sampleC (name) {
  console.log(name)
}
export default function (name) {
  console.log(name)
}
// 导出多个使用别名
import {
  sampleA as funE,
  sampleB as funF,
  sampleC
} from '@/utils/type'
// 或者
import sample, {
  sampleA as funE,
  sampleB as funF
} from '@/utils/type'

  funE('333')	// 333
    funF('555')	// 555
    sampleC('666')	// 666
    sample('default') // default