From dfa35d66f52c16eed8eb84244064de5a252dfdff Mon Sep 17 00:00:00 2001
From: Lance Ball <lball@redhat.com>
Date: Fri, 2 Dec 2016 17:36:02 -0500
Subject: [PATCH] debugger: call `this.resume()` after `this.run()`

When the debugger has started we need to call `this.resume` otherwise,
the prompt won't appear.

Fixes: https://github.com/nodejs/node/issues/9854
PR-URL: https://github.com/nodejs/node/pull/10099
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Rich Trott <rtrott@gmail.com>
---
 lib/_debugger.js                   |  2 +-
 test/parallel/test-debug-prompt.js | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 test/parallel/test-debug-prompt.js

diff --git a/lib/_debugger.js b/lib/_debugger.js
index a87de734fb3ff6..d3bf1f9ffa2dab 100644
--- a/lib/_debugger.js
+++ b/lib/_debugger.js
@@ -839,7 +839,7 @@ function Interface(stdin, stdout, args) {
   // Run script automatically
   this.pause();
 
-  setImmediate(() => { this.run(); });
+  setImmediate(() => { this.run(() => this.resume()); });
 }
 
 
diff --git a/test/parallel/test-debug-prompt.js b/test/parallel/test-debug-prompt.js
new file mode 100644
index 00000000000000..fdc3b4c27f4d45
--- /dev/null
+++ b/test/parallel/test-debug-prompt.js
@@ -0,0 +1,13 @@
+'use strict';
+
+const assert = require('assert');
+const common = require('../common');
+const spawn = require('child_process').spawn;
+
+const proc = spawn(process.execPath, ['debug', 'foo']);
+proc.stdout.setEncoding('utf8');
+
+proc.stdout.once('data', common.mustCall((data) => {
+  assert.strictEqual(data, 'debug> ');
+  proc.kill();
+}));