BREAKING CHANGE(core): switch to esm

package.json

@@ -18,7 +18,8 @@
   "scripts": {
     "test": "(tstest test/)",
     "build": "(tsbuild --web && tsbundle npm)",
-    "format": "(gitzone format)"
+    "format": "(gitzone format)",
+    "buildDocs": "tsdoc"
   },
   "devDependencies": {
     "@gitzone/tsbuild": "^2.1.25",
@@ -48,5 +49,6 @@
   ],
   "browserslist": [
     "last 1 chrome versions"
-  ]
-}
+  ],
+  "type": "module"
+}