From a8fca7d679d79e37a93963a1f3bdf34a3011ba78 Mon Sep 17 00:00:00 2001
From: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
Date: Thu, 15 Dec 2022 23:41:24 -0800
Subject: [js parser] Make `fnBodyContainsUseStrict` faster

---
 src/js_parser.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/js_parser.zig b/src/js_parser.zig
index 38251d42f..9603d2a22 100644
--- a/src/js_parser.zig
+++ b/src/js_parser.zig
@@ -14824,6 +14824,8 @@ fn NewParser_(
 
         pub fn fnBodyContainsUseStrict(body: []Stmt) ?logger.Loc {
             for (body) |stmt| {
+                // "use strict" has to appear at the top of the function body
+                // but we can allow comments
                 switch (stmt.data) {
                     .s_comment => {
                         continue;
@@ -14833,7 +14835,8 @@ fn NewParser_(
                             return stmt.loc;
                         }
                     },
-                    else => {},
+                    .s_empty => {},
+                    else => return null,
                 }
             }
 
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