helm contains

check for existence of chart

Usage

if [[ $(helm contains ${CHART_NAME}) = "true" ]]; then
  echo "exists"
else
  echo "nope"
fi

And helm args are used as expected

if [[ $(helm contains ${CHART_NAME} -n ${NOT_DEFAULT_NAMESPACE}) = "true" ]]; then
  echo "exists"
fi

Install

helm plugin install https://github.com/nhomble/helm-contains