// 接口请求参数转formData
export function toFormData(data) {
  const isJson = (obj) =>
    typeof obj == 'object' &&
    Object.prototype.toString.call(obj).toLowerCase() === '[object object]' &&
    !obj.length
  let fd = new FormData()
  Object.entries(data).forEach(([key, val]) => {
    fd.set(key, isJson(val) ? JSON.stringify(val) : val)
  })
  return fd
}