generate TS client

Makefile

DIR:=gen/

openapi:
	rm -rf $(DIR)
	openapi-generator generate -g typescript-fetch -i http://localhost:8080/openapi.json -o $(DIR) --remove-operation-id-prefix --additional-properties=typescriptThreePlus=true,modelPropertyNaming=original,nullSafeAdditionalProps=true,enumPropertyNaming=original,supportsES6=true,useSingleRequestParameter=false
	grep -rl "? undefined" $(DIR) | xargs sed -i '' 's/? undefined/? null/g'