From 5dd5393cc770ac15a9c2452fe37316cf88c69a9d Mon Sep 17 00:00:00 2001
From: Ives van Hoorne <Ives.v.h@gmail.com>
Date: Tue, 14 Jul 2020 15:43:08 +0200
Subject: [PATCH 1/2] initial commit

---
 src/astring.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/astring.js b/src/astring.js
index 6c01e96f..817bbf9d 100644
--- a/src/astring.js
+++ b/src/astring.js
@@ -818,7 +818,7 @@ export const baseGenerator = {
   UnaryExpression(node, state) {
     if (node.prefix) {
       state.write(node.operator)
-      if (node.operator.length > 1) {
+      if (node.operator.length > 1 || node.argument.type === 'UnaryExpression') {
         state.write(' ')
       }
       if (

From 04adc25c03edbfd75d453a233f0652d3df814068 Mon Sep 17 00:00:00 2001
From: David Bonnet <david@bonnet.cc>
Date: Sat, 2 Jan 2021 09:48:44 +0100
Subject: [PATCH 2/2] Add non-regression tests

---
 src/tests/fixtures/syntax/precedence.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tests/fixtures/syntax/precedence.js b/src/tests/fixtures/syntax/precedence.js
index 08312f35..2d6d7fbd 100644
--- a/src/tests/fixtures/syntax/precedence.js
+++ b/src/tests/fixtures/syntax/precedence.js
@@ -14,7 +14,7 @@ a = !false;
 b = !x instanceof Number;
 c = !(x instanceof Number);
 d = typeof a === 'boolean';
-e = !typeof a === 'boolean';
+e = ! typeof a === 'boolean';
 f = !(typeof a === 'boolean');
 a = (1.1).toString();
 b = new A().toString();
@@ -29,3 +29,5 @@ e = 2 ** +3;
 f = a + (b = 3);
 g = 1 && (() => {});
 g = (() => {}) && 1;
+g = (1, + +2);
+g = (1, + +(2 + 3));