Merge pull request #1938 from plotly/stop-on-npm-err

Abort build process when encountering npm errors

Author: alexcjohnson

.circleci/config.yml

@@ -59,6 +59,14 @@ jobs:
             mkdir dash-package && cp dist/*.tar.gz dash-package/dash-package.tar.gz
             ls -la dash-package
           no_output_timeout: 30m
+      - run:
+          name: Display npm errors and exit on failed builds
+          command: |
+            if [ -d "/home/circleci/.npm/_logs" ]
+            then
+              cat /home/circleci/.npm/_logs/*
+              exit 1
+            fi
       - save_cache:
           key: dep-{{ checksum ".circleci/config.yml" }}-{{ checksum "ver.txt" }}-{{ checksum "requires-all.txt" }}
           paths: