helm plugin install https://github.com/sarcaustech/helm-clean-values
helm plugin update clean-values
Initialize chart repository first if you want to work with a remote repository
helm repo add bitnami https://charts.bitnami.com/bitnami
Check by comparing user values with the chart's default values
helm clean-values simple --chart bitnami/nginx -f ./testdata/bitnami.nginx.yaml
Check by mutating every user values primitive and test for changes in the templating result
helm clean-values mutate --chart bitnami/nginx --stdin < <(cat ./testdata/bitnami.nginx.yaml)