Fix karma-typescript errors
Fix karma-typescript errors

Errors were caused by `spec.ts` generated from test cases during image
build.

OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,Codewars/codewars-runner-cli,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner,Codewars/codewars-runner-cli,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,Codewars/codewars-runner-cli,OverZealous/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner,OverZealous/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner-cli,Codewars/codewars-runner,OverZealous/codewars-runner-cli,OverZealous/codewars-runner-cli,Codewars/codewars-runner,Codewars/codewars-runner-cli,Codewars/codewars-runner,Codewars/codewars-runner-cli