export let userMedia = function (constraints, success, error) {
    if (navigator.mediaDevices.getUserMedia) {
      userMedia = function (constraints, success, error) {
        navigator.mediaDevices.getUserMedia(constraints).then(success).catch(error)
      }
    } else if (navigator.webkitGetUserMedia) {
      userMedia = function (constraints, success, error) {
        navigator.webkitGetUserMedia(constraints, success, error)
      }
    } else if (navigator.mozGetUserMedia) {
      userMedia = function (constraints, success, error) {
        navigator.mozGetUserMedia(constraints, success, error)
      }
    } else if (navigator.getUserMedia) {
      userMedia = function (constraints, success, error) {
        navigator.getUserMedia(constraints, success, error)
      }
    }
  
    userMedia(constraints, success, error)
}