repl: add friendly tips about how to exit repl

Imitate python repl, when the user enters 'exit' or 'quit',
no longer prompt 'Reference Error', but
prompts 'To exit, press ^D or type .exit'.
If the user defines variables named 'exit' or 'quit' ,
only the value of the variables are output

PR-URL: https://github.com/nodejs/node/pull/20617
Fixes: https://github.com/nodejs/node/issues/19021
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

1 files changed, 24 insertions, 0 deletions

diff --git a/test/parallel/test-repl.js b/test/parallel/test-repl.js
index e14398541d..b9c92c3cd6 100644
--- a/test/parallel/test-repl.js
+++ b/test/parallel/test-repl.js
@@ -132,6 +132,29 @@ const strictModeTests = [
   }
 ];
 
+const friendlyExitTests = [
+  {
+    send: 'exit',
+    expect: '(To exit, press ^D or type .exit)'
+  },
+  {
+    send: 'quit',
+    expect: '(To exit, press ^D or type .exit)'
+  },
+  {
+    send: 'quit = 1',
+    expect: '1'
+  },
+  {
+    send: 'quit',
+    expect: '1'
+  },
+  {
+    send: 'exit',
+    expect: '(To exit, press ^D or type .exit)'
+  },
+];
+
 const errorTests = [
   // Uncaught error throws and prints out
   {
@@ -742,6 +765,7 @@ const tcpTests = [
     const [ socket, replServer ] = await startUnixRepl();
 
     await runReplTests(socket, prompt_unix, unixTests);
+    await runReplTests(socket, prompt_unix, friendlyExitTests);
     await runReplTests(socket, prompt_unix, errorTests);
     replServer.replMode = repl.REPL_MODE_STRICT;
     await runReplTests(socket, prompt_unix, strictModeTests);