captain-ui/lib/cert-recognition/common/getUserMediaPolyfill.js

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"use strict";

// 兼容性处理
if (navigator.mediaDevices === undefined) {
  navigator.mediaDevices = {};
}

if (navigator.mediaDevices.getUserMedia === undefined) {
  navigator.mediaDevices.getUserMedia = function (constraints) {
    var getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;

    if (!getUserMedia) {
      return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
    }

    return new Promise(function (resolve, reject) {
      getUserMedia.call(navigator, constraints, resolve, reject);
    });
  };
}