1 files changed, 39 insertions, 0 deletions
diff --git a/tests/node_compat/test/common/hijackstdio.js b/tests/node_compat/test/common/hijackstdio.js
new file mode 100644
index 000000000..38582ece2
--- /dev/null
+++ b/tests/node_compat/test/common/hijackstdio.js
@@ -0,0 +1,39 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+
+// Hijack stdout and stderr
+const stdWrite = {};
+function hijackStdWritable(name, listener) {
+  const stream = process[name];
+  const _write = stdWrite[name] = stream.write;
+
+  stream.writeTimes = 0;
+  stream.write = function(data, callback) {
+    try {
+      listener(data);
+    } catch (e) {
+      process.nextTick(() => { throw e; });
+    }
+
+    _write.call(stream, data, callback);
+    stream.writeTimes++;
+  };
+}
+
+function restoreWritable(name) {
+  process[name].write = stdWrite[name];
+  delete process[name].writeTimes;
+}
+
+module.exports = {
+  hijackStdout: hijackStdWritable.bind(null, 'stdout'),
+  hijackStderr: hijackStdWritable.bind(null, 'stderr'),
+  restoreStdout: restoreWritable.bind(null, 'stdout'),
+  restoreStderr: restoreWritable.bind(null, 'stderr'),
+};