BREAKING CHANGE(core): switch to esm

package.json

@@ -5,6 +5,7 @@
   "description": "handle yaml in smart ways",
   "main": "dist_ts/index.js",
   "typings": "dist_ts/index.d.ts",
+  "type": "module",
   "scripts": {
     "test": "(tstest test/ --web)",
     "build": "(tsbuild --web)"
@@ -24,15 +25,15 @@
   },
   "homepage": "https://gitlab.com/pushrocks/smartyaml#README",
   "dependencies": {
-    "@types/js-yaml": "^3.12.5",
-    "js-yaml": "^3.14.0"
+    "@types/js-yaml": "^4.0.5",
+    "js-yaml": "^4.1.0"
   },
   "devDependencies": {
-    "@gitzone/tsbuild": "^2.1.25",
-    "@gitzone/tsrun": "^1.2.12",
-    "@gitzone/tstest": "^1.0.52",
-    "@pushrocks/tapbundle": "^3.2.9",
-    "@types/node": "^14.14.3"
+    "@gitzone/tsbuild": "^2.1.61",
+    "@gitzone/tsrun": "^1.2.32",
+    "@gitzone/tstest": "^1.0.71",
+    "@pushrocks/tapbundle": "^5.0.3",
+    "@types/node": "^17.0.35"
   },
   "browserslist": [
     "last 1 chrome versions"