@binance/fingerprint/dist/esm/device.js

binance web fingerprint

import md5 from "blueimp-md5";
import { Base64 } from "js-base64";
import * as store from "./utils/store";
import { isClient } from "./utils/is";
var getDevices = function() {
    return store.getCacheDevice();
};
export var getCurrentDeviceId = function(id) {
    if (!id) return "";
    var devices = getDevices();
    var emailEncode = md5(id);
    var device = devices[emailEncode];
    return device && device.value || "";
};
export var saveCurrentDeviceId = function(id, value) {
    var devices = getDevices();
    var emailEncode = md5(id || "");
    var device = devices[emailEncode];
    if (!device) {
        // delete first date.
        var tmpList = Object.keys(devices).reduce(function(res, key) {
            res.push({
                key: key,
                value: devices[key]
            });
            return res;
        }, []);
        if (tmpList.length >= 10) {
            tmpList = tmpList.sort(function(prev, next) {
                return prev.value.date - next.value.date;
            });
            var first = tmpList[0] || {};
            delete devices[first.key];
        }
    }
    devices[emailEncode] = {
        date: new Date().getTime(),
        value: value
    };
    store.setCacheDevice(devices);
};
export var withDeviceInfo = function(id) {
    var fpInfo = arguments.length > 1 && arguments[1] !== void 0 ? arguments[1] : {};
    var info = Object.assign({}, fpInfo);
    if (isClient) {
        // get device_id
        info.device_id = getCurrentDeviceId(id);
        // get related_device_ids
        var emailMd5 = md5(id || "");
        var devices = getDevices();
        var keys = Object.keys(devices).filter(function(k) {
            return k !== emailMd5;
        });
        info.related_device_ids = keys.map(function(k) {
            return devices[k].value;
        }).join(",");
    }
    return Base64.encode(JSON.stringify(info));
};