test: update jest config for ESM

Author: wolfy1339

package.json

@@ -12,7 +12,7 @@
     "lint:fix": "prettier --write '{src,test,scripts}/**/*' README.md package.json",
     "pretest": "npm run -s lint",
     "test": "npm run -s test:node && npm run -s test:web",
-    "test:node": "jest --coverage",
+    "test:node": "NODE_OPTIONS=\"$NODE_OPTIONS --experimental-vm-modules\" npx jest --coverage",
     "test:web": "npm run test:deno && npm run test:browser",
     "pretest:web": "npm run -s build",
     "test:deno": "cd test/deno && deno test",
@@ -42,11 +42,15 @@
     "typescript": "^5.0.0"
   },
   "jest": {
+    "extensionsToTreatAsEsm": [
+      ".ts"
+    ],
     "transform": {
       "^.+\\.(ts|tsx)$": [
         "ts-jest",
         {
-          "tsconfig": "test/tsconfig.test.json"
+          "tsconfig": "test/tsconfig.test.json",
+          "useESM": true
         }
       ]
     },