From 3ce547d42723d9236c55bda42782dd9dc563485b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Borges?= <rageknify@gmail.com>
Date: Sun, 27 Sep 2020 20:18:55 +0100
Subject: [PATCH] Add fast path for string concatenation (#723)

---
 boa/src/value/operations.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/boa/src/value/operations.rs b/boa/src/value/operations.rs
index 143fabf7a4..b8c5153af9 100644
--- a/boa/src/value/operations.rs
+++ b/boa/src/value/operations.rs
@@ -11,6 +11,7 @@ impl Value {
             (Self::Integer(x), Self::Rational(y)) => Self::rational(f64::from(*x) + y),
             (Self::Rational(x), Self::Integer(y)) => Self::rational(x + f64::from(*y)),
 
+            (Self::String(ref x), Self::String(ref y)) => Self::string(format!("{}{}", x, y)),
             (Self::String(ref x), ref y) => Self::string(format!("{}{}", x, y.to_string(ctx)?)),
             (ref x, Self::String(ref y)) => Self::string(format!("{}{}", x.to_string(ctx)?, y)),
             (Self::BigInt(ref n1), Self::BigInt(ref n2)) => {