Ensure tests are not included in generated build

Author: albertogasparin

package.json

@@ -23,8 +23,8 @@
   "homepage": "https://github.com/atlassian/react-sweet-state#readme",
   "scripts": {
     "clean:build": "rm -rf ./lib",
-    "build:cjs": "babel src/ -d lib/cjs --ignore **/__tests__ --presets @babel/env",
-    "build:esm": "babel src/ -d lib/esm --ignore **/__tests__",
+    "build:cjs": "babel src/ -d lib/cjs --ignore \"src/**/__tests__\" --presets @babel/env",
+    "build:esm": "babel src/ -d lib/esm --ignore \"src/**/__tests__\"",
     "build:flow": "echo lib/cjs lib/esm | xargs -n 1 cp src/index.js.flow",
     "build": "npm run clean:build -s && npm run build:cjs -s && npm run build:esm -s && npm run build:flow -s",
     "test": "jest",