@zxing/browser/es2015/common/navigator-utils.js

ZXing for JS's browser layer.

/**
 * If navigator is present.
 */
export function hasNavigator() {
    return typeof navigator !== 'undefined';
}
/**
 * If mediaDevices under navigator is supported.
 */
function isMediaDevicesSupported() {
    return hasNavigator() && !!navigator.mediaDevices;
}
/**
 * If enumerateDevices under navigator is supported.
 */
export function canEnumerateDevices() {
    return !!(isMediaDevicesSupported() && navigator.mediaDevices.enumerateDevices);
}
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