add circle

Author: bahmutov

circle.yml

@@ -0,0 +1,37 @@
+version: 2.1
+orbs:
+  node: circleci/node@1.1.6
+jobs:
+  build:
+    executor:
+      name: node/default
+      tag: '12'
+    steps:
+      - checkout
+      - node/with-cache:
+          steps:
+            - run: npm ci
+
+  release:
+    executor:
+      name: node/default
+      tag: '12'
+    steps:
+      - checkout
+      - node/with-cache:
+        steps:
+          - run: npm ci
+      - run: npx semantic-release
+
+workflows:
+  version: 2
+  test_and_release:
+    jobs:
+      - build
+      - release:
+          requires:
+            - build
+          filters:
+            branches:
+              only:
+                - master