1_settings.js

environment = process.env.NODE_ENV || "development";

var settings = {
  development: {
    public: {},
    private: {}
  },
  staging: {
    public: {},
    private: {}
  },
  production: {
    public: {},
    private: {}
  }
};

if (!process.env.METEOR_SETTINGS) {
  console.log("=> No METEOR_SETTINGS passed in, using locally defined settings.");

  if (environment === "production") {
    Meteor.settings = settings.production;
  } else if (environment === "staging") {
    Meteor.settings = settings.staging;
  } else {
    Meteor.settings = settings.development;
  }

  // Push a subset of settings to the client.
  if (Meteor.settings && Meteor.settings.public) {
    __meteor_runtime_config__.PUBLIC_SETTINGS = Meteor.settings.public;
  }
}