Add CI to formatting

.github/workflows/ci.yml

@@ -126,3 +126,28 @@ jobs:
         with:
           globs: |
             **/*.md
+
+  json-lint:
+    name: Lint json files
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@ec3a7ce113134d7a93b817d10a8272cb61118579
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - name: Cache yarn
+        uses: actions/cache@937d24475381cd9c75ae6db12cb4e79714b926ed
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Verify that json files are formatted correctly
+        run: yarn test-json-formatting

package.json

@@ -13,8 +13,7 @@
   "scripts": {
     "test": "ajv -s canonical-data.schema.json -d \"exercises/*/canonical-data.json\"",
     "test-one": "ajv -s canonical-data.schema.json -d",
-    "test-format": "prettier --check **/*.json",
-    "format": "prettier --write  **/*.json"
+    "test-json-formatting": "prettier --check **/*.json"
   },
   "resolutions": {
     "minimist": "^1.2.3"