Wolfram Key Protection

config.js

var config = {
  wolframKey: 'my api key here'
};
module.exports = config;

myFile.js

var config;
if(process.env.WOLFRAM_KEY){
  config = {
    wolframKey: process.env.WOLFRAM_KEY
  };
} else {
  config = require('/path/to/config.js');
}

var wolfram = require('wolfram').createClient(config.wolframKey);