Enable coveralls

Author: Eyas

.travis.yml

@@ -0,0 +1,6 @@
+language: node_js
+node_js:
+  - "node"
+git:
+  depth: 1
+after_success: npm run coverage_on_travis

package-lock.json

@@ -18,6 +18,7 @@
     "@types/jest": "^26.0.0",
     "@types/react": "^16.7.22",
     "@types/react-test-renderer": "^16.9.2",
+    "coveralls": "^3.1.0",
     "jest": "^26.0.1",
     "prettier": "^2.0.5",
     "react": "^16.13.1",
@@ -49,7 +50,8 @@
     "fix": "prettier --write src/",
     "test": "npm run lint && tsc --build type-test/ && jest",
     "build": "tsc --build .",
-    "prepare": "npm run build"
+    "prepare": "npm run build",
+    "coverage_on_travis": "cat ./coverage/lcov.info | coveralls"
   },
   "homepage": "https://github.com/google/react-schemaorg#readme",
   "bugs": "https://github.com/google/react-schemaorg/issues",