Example
Set MONGO_URL to any arbitrary value except for a database URL and ensure no collections are defined in your Meteor project (including collections defined by Meteor packages) to run Meteor without MongoDB.
Note that without MongoDB, server/client methods alongside any packages related to Meteor's user-account system will be undefined. Ex: Meteor.userId()
Linux/Mac:
MONGO_URL="none" meteor
or
export MONGO_URL="none"
meteor
Windows:
set MONGO_URL=none
meteor
