From 797184f587f2da19b45b587829bd83413f3ed2b1 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Sun, 11 Dec 2022 07:25:06 +0200
Subject: [PATCH] improve CLI interoperability (#5762)

---
 bin/uglifyjs | 14 ++++++++++++--
 tools/tty.js |  2 +-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/bin/uglifyjs b/bin/uglifyjs
index a2a02575..4b790f4b 100755
--- a/bin/uglifyjs
+++ b/bin/uglifyjs
@@ -301,9 +301,19 @@ if (specified["in-situ"]) {
     process.stdin.setEncoding("utf8");
     process.stdin.once("data", function() {
         clearTimeout(timerId);
-    }).on("data", function(chunk) {
+    }).on("data", process.stdin.isTTY ? function(chunk) {
+        // emulate console input termination via Ctrl+D / Ctrl+Z
+        var match = /[\x04\x1a]\r?\n?$/.exec(chunk);
+        if (match) {
+            chunks.push(chunk.slice(0, -match[0].length));
+            process.stdin.pause();
+            process.stdin.emit("end");
+        } else {
+            chunks.push(chunk);
+        }
+    } : function(chunk) {
         chunks.push(chunk);
-    }).on("end", function() {
+    }).once("end", function() {
         files = { STDIN: chunks.join("") };
         run();
     });
diff --git a/tools/tty.js b/tools/tty.js
index 395c48ec..d219581c 100644
--- a/tools/tty.js
+++ b/tools/tty.js
@@ -6,7 +6,7 @@ try {
 } catch (e) {
     // ensure output buffers are flushed before process termination
     var exit = process.exit;
-    process.exit = function() {
+    if ("bufferSize" in process.stdout) process.exit = function() {
         var args = [].slice.call(arguments);
         process.once("uncaughtException", function() {
             (function callback() {