Get navigator info, backwards compatible with browsers that do not support promises.

getNavigatorInfo.js

function getNavigatorInfo(callback){
    if(!callback){
        callback = function(result){
            let myblob = new Blob([JSON.stringify(result, undefined, 4)], {type: 'text/plain'});
            let bloburl = URL.createObjectURL(myblob);
            let win = window.open(bloburl, '_blank');
            win.focus();
            setTimeout(function(){URL.revokeObjectURL(bloburl);},1000);
        };
    }
    var result = {};
    
    function syncronousData(){
        //Simple
        for(var key of ["appCodeName", "appName", "appVersion", "buildID", "cookieEnabled", "doNotTrack", "hardwareConcurrency", "language", "languages", "maxTouchPoints", "onLine", "oscpu", "platform", "product", "productSub", "userAgent", "vendor", "vendorSub", "webdriver"]){
            result[key] = navigator[key];
        }
        
        result.location = {};
        for(var key of ["hash","host","hostname","href","origin","pathname","port","protocol","search"]){
            result.location[key] = document.location[key];
        }
        
        //Media Capabilities
        navigator.mediaCapabilities = [];
        if(navigator.mediaCapabilities){
            //TODO: This is an asyncronous request, it needs to be handled else where.
        }
        
        
        //Plugins
        result.plugins = [];
        var pluginArray = []; //Used to have guarenteed enumerated plugins
        for(var plugin of navigator.plugins){
            pluginArray.push(plugin);
            var pluginResult = {};
            for(var pluginValue of ["description", "filename", "name", "version"]){
                pluginResult[pluginValue] = plugin[pluginValue];
            }
            result.plugins.push(pluginResult);
        }
        
        //Mime types
        result.mimeTypes = [];
        if(navigator.mimeTypes){
            for(var mimeType of navigator.mimeTypes){
                var mimeTypeResult = {};
                for(var mimeTypeValue of ["description", "suffixes", "type"]){
                    mimeTypeResult[mimeTypeValue] = mimeType[mimeTypeValue];
                }
                if(mimeType.enabledPlugin){
                    mimeTypeResult.enabledPlugin = -1;
                    for(var i=0;i<pluginArray.length;i++){
                        if(mimeType.enabledPlugin == pluginArray[i]){
                            mimeTypeResult.enabledPlugin = i;
                            break;
                        }
                    }
                }else{
                    mimeTypeResult.enabledPlugin = null;
                }
                result.mimeTypes.push(mimeTypeResult);
            }
        }
        
        return result;
    }
    
    //Media Devices
    result.mediaDevices = {"devices": [], "constraints": []};
    if(navigator.mediaDevices){
        var constraints = navigator.mediaDevices.getSupportedConstraints();
        for(var constraint in constraints){
            if(constraints[constraint]){
                result.mediaDevices.constraints.push(constraint);
            }
        }
        navigator.mediaDevices.enumerateDevices().then(function(devices){
            for(var device of devices){
                var deviceInfo = {};
                for(var deviceValue of ["deviceId", "groupId", "kind", "label"]){
                    deviceInfo[deviceValue] = device[deviceValue];
                }
                result.mediaDevices.devices.push(deviceInfo);
            }
            callback(syncronousData());
        }).catch(function(err){
            console.log(err.name + ": " + err.message);
            callback(syncronousData());
        });
    }else{
        callback(syncronousData());
    }
}