Allow typescript to process JS files (#224)

Author: zapo

lib/tsconfig.json

@@ -9,5 +9,5 @@
     "lib": ["DOM", "DOM.Iterable", "ES6"]
   },
   "include": ["./build.json", "."],
-  "exclude": ["./**/*.test.ts", "./test", "./dist"]
+  "exclude": ["./**/*.test.ts", "./**/*.test.js", "./test", "./dist"]
 }

tsconfig.base.json

@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
+    "allowJs": true,
     "incremental": true,
     "declaration": true,
     "esModuleInterop": true,