diff --git a/package.json b/package.json
index 653834d..ae99cbc 100644
--- a/package.json
+++ b/package.json
@@ -66,9 +66,12 @@
 	},
 	"homepage": "https://github.com/react-widget/popup#readme",
 	"browserslist": [
-		">0.2%",
+		">=0.25%",
 		"not dead",
-		"not ie <= 11",
-		"not op_mini all"
+		"not op_mini all",
+		"not Android 4.4.3-4.4.4",
+		"not ios_saf < 10",
+		"not Chrome < 50",
+		"firefox ESR"
 	]
 }
diff --git a/src/style/index.js b/src/style/index.ts
similarity index 100%
rename from src/style/index.js
rename to src/style/index.ts