Dynamically import Temporal polyfill

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hebcal/noaa",
-  "version": "0.8.6",
+  "version": "0.8.7",
   "description": "sunrise and sunset via NOAA algorithm with elevation, based on KosherJava",
   "author": "Michael J. Radwin (https://github.com/mjradwin)",
   "contributors": [
@@ -40,11 +40,9 @@
     "dist/*"
   ],
   "devDependencies": {
-    "@types/node": "20.9.4",
+    "@types/node": "20.10.0",
     "gts": "^5.2.0",
+    "temporal-polyfill": "^0.1.1",
     "typescript": "^5.3.2"
-  },
-  "dependencies": {
-    "temporal-polyfill": "^0.1.1"
   }
 }

src/index.ts

@@ -1,4 +1,8 @@
-import {Temporal} from 'temporal-polyfill';
+(async () => {
+  if (typeof Temporal !== 'function') {
+    await import('temporal-polyfill/global');
+  }
+})();
 
 /**
  * java.lang.Math.toRadians

tsconfig-es6.json

@@ -1,14 +1,14 @@
 {
   "extends": "./node_modules/gts/tsconfig-google.json",
   "compilerOptions": {
-    "module": "es6",
+    "module": "node16",
     "declaration": false,
     "target": "es6",
     "sourceMap": false,
     "outDir": "dist/esm",
     "lib": ["ESNext"],
     "allowSyntheticDefaultImports": true,
-    "moduleResolution": "node",
+    "moduleResolution": "Node16",
     "strict": true
   }
 }