chore(codemod): pick up codemods test by npm test

From now the `npm test` command will execute the codemod tests as well.

Author: balazsmatepetro

codemods/jest.config.js

@@ -1 +1,3 @@
-module.exports = {}
+module.exports = {
+  testMatch: ['<rootDir>/**/*.test.js'],
+}

package.json

@@ -26,13 +26,14 @@
   ],
   "scripts": {
     "test": "is-ci \"test:ci\" \"test:dev\"",
-    "test:dev": "npm run test:types && npm run test:format && npm run test:eslint && jest --watch",
-    "test:ci": "npm run test:types && npm run test:format && npm run test:eslint && jest",
+    "test:dev": "npm run test:types && npm run test:format && npm run test:eslint && npm run test:codemod && jest --watch",
+    "test:ci": "npm run test:types && npm run test:format && npm run test:eslint && npm run test:codemod && jest",
     "test:coverage": "yarn test:ci; open coverage/lcov-report/index.html",
     "test:format": "yarn prettier --check",
     "test:types": "tsc",
     "test:eslint": "eslint --ext .ts,.tsx ./src",
     "test:size": "yarn build:umd && bundlewatch",
+    "test:codemod": "jest --config codemods/jest.config.js",
     "build": "yarn build:commonjs && yarn build:es && yarn build:umd && yarn build:types",
     "build:commonjs": "rimraf ./lib && cross-env BABEL_ENV=commonjs babel --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir lib",
     "build:es": "rimraf ./es && babel --extensions .ts,.tsx --ignore ./src/**/tests/**/* ./src --out-dir es",