Revert "[test] Disable ESM for ts-node, because it either breaks with…

… Node 20 or emits a warning per test."

Broke js tests

This reverts commit 1add7cf.

Makefile

@@ -159,7 +159,7 @@ test/bin/%/js.txt: test/bin/%/Test.js
 	$(DO)node $< >$@ || grep '//FAIL:.*\<js\>' test/$*.fu
 
 test/bin/%/ts.txt: test/bin/%/Test.ts test/node_modules test/tsconfig.json
-	$(DO)test/node_modules/.bin/ts-node $< >$@ || grep '//FAIL:.*\<ts\>' test/$*.fu
+	$(DO)(cd test && node --loader ts-node/esm ../$< >../$@) || grep '//FAIL:.*\<ts\>' test/$*.fu
 
 test/bin/%/py.txt: test/bin/%/Test.py
 	$(DO)$(PYTHON) $< >$@ || grep '//FAIL:.*\<py\>' test/$*.fu

test/package.json

@@ -4,6 +4,7 @@
   "version": "3.0.2-development",
   "repository": "https://github.com/fusionlanguage/fut.git",
   "author": "Piotr Fusik",
+  "type": "module",
   "dependencies": {
     "ts-node": "^10.9.1"
   }

test/tsconfig.json

@@ -1,8 +1,12 @@
 {
   "compilerOptions": {
     "target": "es2021",
+    "module": "ESNext",
     "noEmit": true,
     "strictNullChecks": false,
     "forceConsistentCasingInFileNames": true
+  },
+  "ts-node": {
+    "esm": true
   }
 }