Function doubleToString

src/__tests__/MediaStreamRecorder.js:2585–2590

(num)

        }

        function doubleToString(num) {
            return [].slice.call(
                new Uint8Array((new Float64Array([num])).buffer), 0).map(function(e) {
                return String.fromCharCode(e);
            }).reverse().join('');
        }

        var webm = new ArrayToWebM(frames.map(function(frame) {
            var webp = parseWebP(parseRIFF(atob(frame.image.slice(23))));