Final approach

.circleci/config.yml

@@ -106,13 +106,9 @@ jobs:
             # fallback to using the latest cache if no exact match is found
             - dependency-cache-
       - run:
-          name: Install deps via npm
+          name: Install npm 6 + deps via npm
           command: |
-           # Only run npm install if the package-lock.json or package.json was changed
-           CHANGED_FILES="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"
-           echo "$CHANGED_FILES" | grep --quiet "package.*json" && 
-           sudo npm install -g npm@6 &&
-           npm install
+           sudo npm install -g npm@6.1.0 && npm install
       - save_cache:
           key: dependency-cache-{{ checksum "package-lock.json" }}
           paths: