feat(actions): added coverage.yml (#10)

Co-authored-by: Aman Jain <aman.j@safe.security>

.github/workflows/coverage.yml

@@ -0,0 +1,23 @@
+name: 'coverage'
+on:
+    pull_request:
+        branches:
+            - master
+            - main
+jobs:
+    coverage:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v2
+            - name: Use Node.js ${{ matrix.node-version }}
+              uses: actions/setup-node@v2
+              with:
+                node-version: ${{ matrix.node-version }}
+            - name: Tests on ${{ matrix.node-version }}
+              uses: artiomtr/jest-coverage-report-action@v2.0-rc.5
+              with:
+                  github-token: ${{ secrets.GITHUB_TOKEN }}
+                  package-manager: yarn
+                  test-script: yarn run test:coverage:jest      
+              env:
+                CI: true

package.json

@@ -24,6 +24,7 @@
     "scripts": {
         "build": "tsc",
         "test": "jest",
-        "prepare": "husky install"
+        "prepare": "husky install",
+        "test:coverage:jest": "jest --silent --ci --json --coverage --testLocationInResults --outputFile=\"report.json\" --forceExit"
     }
 }