install: npm install -g payumoney-shakey

Do: var payumoney_shakey = require('payumoney-shakey');

and use it :

payumoney_shakey.make().basic(key, txnid, amount, productinfo, firstname, email, salt);

and take a look at the hash:

var hash = payumoney_shakey.make().basic(key, txnid, amount, productinfo, firstname, email, salt);
   console.log(hash);

hash should contain a string value something like below: "5c4cf557ab390aa923cb81fee82701478caf0807fb63e9b789d54171e32124a537d906f4874e646f0bb780cbfae799a6bc003c177a29e7a91da01dff681acdf9"

will add more function Soon. we are working on it.