Add tsconfig file for new JavaScript

Author: NickColley

bin/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "extends": "../tsconfig.base.json",
+  "include": ["**/*.mjs"],
+  "compilerOptions": {
+    "strictNullChecks": false,
+    "types": ["node"]
+  }
+}