chore(dependency): add typescript

Author: LouisMazel

package.json

@@ -58,6 +58,7 @@
 		"sass": "^1.19.0",
 		"sass-loader": "^8.0.0",
 		"ts": "^0.2.2",
+		"typescript": "^3.9.7",
 		"vue": "^2.6.10",
 		"vue-template-compiler": "^2.6.10"
 	},