Add eslint-plugin-jest

Config ESLint to properly lint spec files based on Jest.

Author: angelocordon

.eslintrc.json

@@ -2,7 +2,8 @@
   "env": {
     "browser": true,
     "es6": true,
-    "node": true
+    "node": true,
+    "jest/globals": true
   },
   "extends": [
     "eslint:recommended",
@@ -23,7 +24,7 @@
     "ecmaVersion": 6,
     "sourceType": "module"
   },
-  "plugins": ["react", "prettier"],
+  "plugins": ["react", "prettier", "jest"],
   "settings": {
     "react": {
       "version": "detect"

package-lock.json

@@ -42,21 +42,22 @@
     "testModule": "tests/main.js"
   },
   "devDependencies": {
-    "babel-eslint": "^10.0.1",
     "@babel/core": "^7.4.0",
     "@babel/plugin-proposal-class-properties": "^7.4.0",
     "@babel/preset-env": "^7.4.2",
     "@babel/preset-react": "^7.0.0",
+    "babel-eslint": "^10.0.1",
     "babel-jest": "^24.5.0",
     "babel-plugin-module-resolver": "^3.2.0",
     "commitizen": "3.0.5",
     "cz-conventional-changelog": "2.1.0",
+    "enzyme": "^3.9.0",
+    "enzyme-adapter-react-16": "^1.11.2",
     "eslint": "^5.16.0",
     "eslint-config-prettier": "^4.1.0",
+    "eslint-plugin-jest": "^22.4.1",
     "eslint-plugin-prettier": "^3.0.1",
     "eslint-plugin-react": "^7.12.4",
-    "enzyme": "^3.9.0",
-    "enzyme-adapter-react-16": "^1.11.2",
     "husky": "1.1.3",
     "jest": "^24.5.0",
     "lint-staged": "8.0.4",