fix corner cases with delete (#1796)

`delete Infinity` returns `false` where as `delete (1/0)` returns `true`
2017-04-07 15:39:59 +08:00
parent 0f4cd73dcc
commit e3c9c22c75
2 changed files with 55 additions and 11 deletions
--- a/test/compress/evaluate.js
+++ b/test/compress/evaluate.js
@@ -857,3 +857,26 @@ issue_1760_2: {
    }
    expect_stdout: "Infinity"
 }
+
+delete_expr: {
+    options = {
+        evaluate: true,
+    }
+    input: {
+        console.log(delete undefined);
+        console.log(delete void 0);
+        console.log(delete Infinity);
+        console.log(delete (1 / 0));
+        console.log(delete NaN);
+        console.log(delete (0 / 0));
+    }
+    expect: {
+        console.log(delete undefined);
+        console.log(delete void 0);
+        console.log(delete Infinity);
+        console.log(delete (1 / 0));
+        console.log(delete NaN);
+        console.log(delete (0 / 0));
+    }
+    expect_stdout: true
+}