diff --git a/lib/compress.js b/lib/compress.js
index 73954ab8..a9a8ca93 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -10948,6 +10948,7 @@ Compressor.prototype.compress = function(node) {
                     in_order = null;
                     return;
                 }
+                if (node instanceof AST_Class) return abort = true;
                 if (node instanceof AST_Scope) return abort = true;
                 if (avoid && node instanceof AST_Symbol && avoid[node.name]) return abort = true;
                 if (node instanceof AST_SymbolRef) {
diff --git a/test/compress/classes.js b/test/compress/classes.js
index bb56f71a..feee4030 100644
--- a/test/compress/classes.js
+++ b/test/compress/classes.js
@@ -3927,3 +3927,50 @@ issue_5724: {
     expect_stdout: ReferenceError("a is not defined")
     node_version: ">=12"
 }
+
+issue_5735_1: {
+    options = {
+        inline: true,
+    }
+    input: {
+        console.log(typeof function(a) {
+            return class {
+                static P = { ...a };
+            };
+        }([ 42..p ] = []));
+    }
+    expect: {
+        console.log(typeof function(a) {
+            return class {
+                static P = { ...a };
+            };
+        }([ 42..p ] = []));
+    }
+    expect_stdout: "function"
+    node_version: ">=12"
+}
+
+issue_5735_2: {
+    options = {
+        inline: true,
+    }
+    input: {
+        console.log(typeof function(a) {
+            return class {
+                p = a;
+            };
+        }(console.log("PASS")));
+    }
+    expect: {
+        console.log(typeof function(a) {
+            return class {
+                p = a;
+            };
+        }(console.log("PASS")));
+    }
+    expect_stdout: [
+        "PASS",
+        "function",
+    ]
+    node_version: ">=12"
+}