In case your programming teacher forgot to tell you 'global scope is evil'. A quick demo on how to break lambda containers by keeping things in global scope.

Handlers

good.js

Handler that does no evil.

bad.js

Handler that uses global scope without unwanted side-effects.

ugly.js

Handler that uses global scope that can be catastrophic for the container instance.

Demo

Deploy with sls deploy then curl the resulting endpoints. Use query param fail=true to fail handler's promise chain.