eslint changes

.eslintrc.json

@@ -1,13 +1,17 @@
 {
     "env": {
         "browser": true,
-        "es2021": true
+        "es2021": true,
+        "jest/globals": true
     },
     "extends": "eslint:recommended",
     "parserOptions": {
         "ecmaVersion": 12,
         "sourceType": "module"
     },
+    "plugins": {
+              "jest"
+    },
     "rules": {
     }
 }

package.json

@@ -36,6 +36,7 @@
     "@babel/preset-env": "^7.13.9",
     "babel-plugin-transform-class-properties": "^6.24.1",
     "eslint": "^7.22.0",
+    "eslint-plugin-jest": "^24.3.2",
     "jest": "^26.6.3"
   },
   "type": "module",