added tsdv to support es modules imports

package.json

@@ -2,14 +2,23 @@
   "name": "vite-plugin-cesium",
   "version": "1.2.19",
   "description": "Cesium library plugin for Vite",
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.ts",
   "files": [
     "dist"
   ],
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.mjs",
+      "require": "./dist/index.js"
+    }
+  },
   "scripts": {
-    "build": "tsc",
-    "dev": "tsc -w"
+    "dev": "tsdv watch",
+    "build": "tsdv build",
+    "prepare": "npm run build"
   },
   "keywords": [
     "vite",
@@ -36,10 +45,12 @@
     "@types/node": "^14.14.31",
     "@types/serve-static": "^1.13.9",
     "prettier": "^2.2.1",
+    "tsdv": "^0.6.1",
     "typescript": "^4.2.2",
-    "vite": "^2.7.1"
+    "vite": "^3.0.4"
   },
   "peerDependencies": {
-    "cesium": "^1.88.0"
+    "cesium": "^1.88.0",
+    "vite": ">=2.7.1"
   }
 }

tsconfig.json

@@ -1,11 +1,17 @@
 {
-    "extends": "@tsconfig/node12/tsconfig.json",
     "include": [
         "src"
     ],
     "compilerOptions": {
         "outDir": "dist",
         "declaration": true,
+        "target": "ES2017",
+        "module": "commonjs",
         "removeComments": false,
-    },
+        "strict": true,
+        "moduleResolution": "node",
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "forceConsistentCasingInFileNames": true
+    }
 }

tsdv.config.ts

@@ -0,0 +1,6 @@
+import { defineConfig } from 'tsdv';
+
+export default defineConfig({
+  target: 'node12',
+  formats: ['es', 'cjs']
+});