Update CI

Author: jasondkiesling

.circleci/config.yml

@@ -3,7 +3,7 @@ jobs:
   build:
     docker:
       # specify the version you desire here
-      - image: circleci/node:10.13
+      - image: circleci/node:12.18
 
       # Specify service dependencies here if necessary
       # CircleCI maintains a library of pre-built images
@@ -24,7 +24,7 @@ jobs:
             # fallback to using the latest cache if no exact match is found
             - v1-dependencies-
 
-      - run: yarn install
+      - run: npm ci
 
       - save_cache:
           paths:
@@ -34,7 +34,7 @@ jobs:
       # run tests!
       - run:
           name: Run test suites
-          command: yarn test 
+          command: npm test 
       - run:
           name: Run eslint
-          command: yarn lint
+          command: npm run lint