Update of dependencies + improved CircleCI config

Author: birdofpreyru

.circleci/config.yml

@@ -1,53 +1,51 @@
+defaults: &defaults
+  docker:
+    - image: circleci/node:8.11.2
+
 version: 2
 jobs:
-  # Release.
-  # TODO: Probably, it is possible to reuse the test job below as a part of
-  # the release job; but as I don't know how to do it at the moment, let's
-  # just dublicate the logic for now.
-  release:
+  test:
+    <<: *defaults
     docker:
       - image: circleci/node:8.9.4
     steps:
       - checkout
       - restore_cache:
-          # Careful here, though, at the moment, there should be no problem
-          # to reuse the same cache of "node_modules" between test and release
-          # jobs.
-          key: test-node-modules-{{ checksum "package-lock.json" }}
+          key: node-modules-{{ checksum "package-lock.json" }}
       - run: npm install
       - save_cache:
-          key: test-node-modules-{{ checksum "package-lock.json" }}
+          key: node-modules-{{ checksum "package-lock.json" }}
           paths:
             - node_modules
       - run: npm test
-      - run: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
-      - run: npm publish
-
-  # Just tests commited code.
-  test:
-    docker:
-      - image: circleci/node:8.9.4
+      - run: npm run build
+      - persist_to_workspace:
+          root: .
+          paths:
+            - dist
+  release:
+    <<: *defaults
     steps:
       - checkout
-      - restore_cache:
-          key: test-node-modules-{{ checksum "package-lock.json" }}
-      - run: npm install
-      - save_cache:
-          key: test-node-modules-{{ checksum "package-lock.json" }}
-          paths:
-            - node_modules
-      - run: npm test
+      - attach_workspace:
+          at: .
+      - run: echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" >> ~/.npmrc
+      - run: npm publish
 
 workflows:
   version: 2
   build:
     jobs:
-      - release:
-          filters:
-            branches:
-              only: master
       - test:
+          filters:
+            tags:
+              only:
+                /.*/
+      - release:
           filters:
             branches:
-              ignore: master
-            
+              ignore: /.*/
+            tags:
+              only: /v[0-9]+(\.[0-9]+)*/
+          requires:
+            - test