function getAspectRatios()

in src/windows/CameraProxy.js [533:560]
23 lines of code
2 McCabe index (conditional complexity)

    function getAspectRatios (capture) {
        var videoDeviceController = capture.videoDeviceController;
        var photoAspectRatios = videoDeviceController.getAvailableMediaStreamProperties(CapMSType.photo).map(function (element) {
            return (element.width / element.height).toFixed(1);
        }).filter(function (element, index, array) { return (index === array.indexOf(element)); });

        var videoAspectRatios = videoDeviceController.getAvailableMediaStreamProperties(CapMSType.videoRecord).map(function (element) {
            return (element.width / element.height).toFixed(1);
        }).filter(function (element, index, array) { return (index === array.indexOf(element)); });

        var videoPreviewAspectRatios = videoDeviceController.getAvailableMediaStreamProperties(CapMSType.videoPreview).map(function (element) {
            return (element.width / element.height).toFixed(1);
        }).filter(function (element, index, array) { return (index === array.indexOf(element)); });

        var allAspectRatios = [].concat(photoAspectRatios, videoAspectRatios, videoPreviewAspectRatios);

        var aspectObj = allAspectRatios.reduce(function (map, item) {
            if (!map[item]) {
                map[item] = 0;
            }
            map[item]++;
            return map;
        }, {});

        return Object.keys(aspectObj).filter(function (k) {
            return aspectObj[k] === 3;
        });
    }