fix corner case in dead_code (#4373)

fixes #4372
2020-12-12 18:24:18 +00:00
parent 8c000033d3
commit af97629912
2 changed files with 48 additions and 6 deletions
--- a/test/compress/destructured.js
+++ b/test/compress/destructured.js
@@ -1806,3 +1806,41 @@ issue_4355: {
    expect_stdout: "2"
    node_version: ">=6"
 }
+
+issue_4372_1: {
+    options = {
+        dead_code: true,
+    }
+    input: {
+        var a = "FAIL";
+        a += {
+            [console.log(a)]: a,
+        } = a = "PASS";
+    }
+    expect: {
+        var a = "FAIL";
+        a += {
+            [console.log(a)]: a,
+        } = a = "PASS";
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}
+
+issue_4372_2: {
+    options = {
+        dead_code: true,
+    }
+    input: {
+        var a;
+        [ a ] = a = [ "PASS", "FAIL" ];
+        console.log(a);
+    }
+    expect: {
+        var a;
+        [ a ] = [ "PASS", "FAIL" ];
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}