test: ignore test files in coverage (#2566)

Author: tido64

package.json

@@ -83,7 +83,7 @@
     "set-react-version": "node scripts/internal/set-react-version.mts",
     "show-affected": "node scripts/build/affected.mts",
     "test": "node scripts/internal/test.mts",
-    "test:js": "node --test $(git ls-files '*.test.ts')",
+    "test:js": "node --no-warnings --test $(git ls-files '*.test.ts')",
     "test:matrix": "node scripts/testing/test-matrix.mts",
     "test:rb": "bundle exec ruby -Ilib:test -e \"Dir.glob('./test/test_*.rb').each { |file| require(file) }\""
   },

scripts/internal/test.mts

@@ -24,10 +24,10 @@ switch (getTarget(input)) {
     break;
   case "typescript":
     testWith(process.argv0, [
-      "--experimental-strip-types",
       "--no-warnings",
       "--test",
       "--experimental-test-coverage",
+      "--test-coverage-exclude=test/**/*.ts",
       ...input,
     ]);
     break;