Merge pull request #553 from mozilla/circleci

Switch from Travis to CircleCI

Author: mqp

.circleci/config.yml

@@ -0,0 +1,18 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:10-browsers
+    working_directory: ~/repo
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+          - v1-dependencies-{{ checksum "package-lock.json" }}
+          - v1-dependencies-
+      - run: npm ci
+      - save_cache:
+          paths:
+            - node_modules
+          key: v1-dependencies-{{ checksum "package-lock.json" }}
+      - run: npm test

.travis.yml

@@ -19,7 +19,8 @@
     "prettier": "prettier --write '*.js' 'src/**/*.js'",
     "lint:js": "eslint '*.js' 'scripts/**/*.js' 'src/**/*.js'",
     "lint:html": "htmlhint 'src/**/*.html'",
-    "lint": "npm run lint:js && npm run lint:html"
+    "lint": "npm run lint:js && npm run lint:html",
+    "test": "npm run lint && npm run build"
   },
   "dependencies": {
     "@fortawesome/fontawesome-svg-core": "^1.2.2",