# environment variables
## set
$ firebase functions:config:set someservice.key="THE API KEY" someservice.id="THE CLIENT ID"
firebase functions:config:get
# {
# "someservice": {
# "key":"THE API KEY",
# "id":"THE CLIENT ID"
# }
# }
const functions = require('firebase-functions');
console.log(functions.config().someservice.key);
firebase functions:config:get > .runtimeconfig.json