@@ -10,7 +10,6 @@
 //------------------------------------------------------------------------------
 
 const fs = require("node:fs");
-const { writeFile } = require("node:fs/promises");
 const { execSync } = require("node:child_process");
 const os = require("node:os");
 
@@ -76,28 +75,22 @@ function generateFiles() {
 }
 
 /**
- * Generates an EMFILE error by writing to all files in the output directory.
- * Since Node.js 26.8.0, `readFile()` runs open, fstat, read, and close in a
- * single thread pool task, so concurrent reads no longer accumulate file
- * descriptors and cannot trigger EMFILE (https://github.com/nodejs/node/pull/65327).
- * Concurrent writes still can, and writing is also what `--fix` does above.
- * @returns {undefined}
+ * Generates an EMFILE error by opening files one at a time and holding the
+ * descriptors until the operating system refuses to open another file.
+ * @returns {Promise<void>}
  */
 async function generateEmFileError() {
-	const results = await Promise.allSettled(
-		Array.from({ length: FILE_COUNT }, (_, i) => {
-			const fileName = `file_${i}.js`;
+	const fds = [];
 
-			return writeFile(
-				`${OUTPUT_DIRECTORY}/${fileName}`,
-				"// Overwritten",
-			);
-		}),
-	);
-	const failedResult = results.find(({ status }) => status === "rejected");
+	try {
+		for (let i = 0; i < FILE_COUNT; i++) {
+			const fileName = `file_${i}.js`;
+			const fd = fs.openSync(`${OUTPUT_DIRECTORY}/${fileName}`);
 
-	if (failedResult?.reason) {
-		throw failedResult.reason;
+			fds.push(fd);
+		}
+	} finally {
+		fds.forEach(fs.closeSync);
 	}
 }