demo.js

var CryptoJS = require('crypto-js');

let s = CryptoJS.SHA1(CryptoJS.enc.Utf8.parse("tSdGtmwh49BcR1irt18mxG41dGsBuGKS"))
    , a = CryptoJS.enc.Hex.parse(s.toString(CryptoJS.enc.Hex).substr(0, 32));

function l(t) {
    var e = t
        , i = a
        , o = CryptoJS.AES.encrypt(e, i, {
        mode: CryptoJS.mode.ECB,
        padding: CryptoJS.pad.Pkcs7
    });
    return CryptoJS.enc.Base64.stringify(o.ciphertext)
}

function h(t) {
    let e = (i = t = String(t),
        o = CryptoJS.enc.Base64.parse(i),
        r = a,
        CryptoJS.AES.decrypt({
            ciphertext: o
        }, r, {
            mode: CryptoJS.mode.ECB,
            padding: CryptoJS.pad.Pkcs7
        }).toString(CryptoJS.enc.Utf8));
    var i, o, r;
    return JSON.parse(e)
}