fix incompatibility of ts-node with node 20

close #31

solution as per TypeStrong/ts-node#1997 (comment)
and passing option as per https://stackoverflow.com/a/73433625

Note: I add an adhoc test script for ci (instead of replacing the existing one)
because the adhoc solution seem to mix up the lines in case of errors
(see TypeStrong/ts-node#1997 (comment))
So this is to be used only for github actions, and not for general purpose testing.

Note: when TypeStrong/ts-node#1997 is solved,
this can be revert

Author: swiing

.github/workflows/ci.yml

@@ -25,4 +25,4 @@ jobs:
       - name: Install dependencies
         run: npm install # npm ci
       - run: npm run build --if-present
-      - run: npm test
+      - run: npm run test:ci

package.json

@@ -31,7 +31,8 @@
     "prepublishOnly": "npm run test",
     "style:fix": "prettier {example,src,test}/**/*.ts --write",
     "style:check": "prettier {example,src,test}/**/*.ts --check",
-    "test": "ts-node --esm --project ./tsconfig.esm.json ./test/index.ts"
+    "test": "ts-node --esm --project ./tsconfig.esm.json ./test/index.ts",
+    "test:ci": "TS_NODE_PROJECT='./tsconfig.esm.json' node --no-warnings=ExperimentalWarning --loader ts-node/esm ./test/index.ts"
   },
   "author": "swiing",
   "license": "MIT",