From 9ef0b18eb0b4c337ccfc8d0add36bec6b657262f Mon Sep 17 00:00:00 2001
From: "Kevin (Kun) \"Kassimo\" Qian" <kevinkassimo@gmail.com>
Date: Thu, 19 Dec 2019 21:04:14 -0800
Subject: repl: do not crash on async op reject (#3527)

---
 cli/lib.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'cli/lib.rs')

diff --git a/cli/lib.rs b/cli/lib.rs
index df4cbbdf0..b191d5e87 100644
--- a/cli/lib.rs
+++ b/cli/lib.rs
@@ -349,6 +349,11 @@ fn bundle_command(flags: DenoFlags) {
 
 fn run_repl(flags: DenoFlags) {
   let (mut worker, _state) = create_worker_and_state(flags);
+  // Make repl continue to function under uncaught async errors.
+  worker.set_error_handler(Box::new(|err| {
+    eprintln!("{}", err.to_string());
+    Ok(())
+  }));
   // Setup runtime.
   js_check(worker.execute("denoMain()"));
   let main_future = async move {
-- 
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