Rollup build fix (#145)

* build updates

Author: ellthompson

package-lock.json

@@ -68,7 +68,7 @@
     "rollup-plugin-copy": "^3.4.0",
     "rollup-plugin-module-replacement": "^1.2.1",
     "rollup-plugin-terser": "^7.0.2",
-    "rollup-plugin-typescript": "^1.0.1",
+    "rollup-plugin-typescript2": "^0.31.1",
     "serve": "^13.0.2",
     "tslib": "^2.3.1",
     "typescript": "^4.5.4"