From f79ded3cb6a1a8eb754081fca6b074bef455224e Mon Sep 17 00:00:00 2001
From: flywind <43030857+xflywind@users.noreply.github.com>
Date: Fri, 30 Oct 2020 16:16:47 +0800
Subject: [PATCH] fix #15638 (#15789)

---
 compiler/jsgen.nim    | 1 +
 tests/js/tdiscard.nim | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 tests/js/tdiscard.nim

diff --git a/compiler/jsgen.nim b/compiler/jsgen.nim
index 4d913aa87d..8b91ada8a0 100644
--- a/compiler/jsgen.nim
+++ b/compiler/jsgen.nim
@@ -2534,6 +2534,7 @@ proc gen(p: PProc, n: PNode, r: var TCompRes) =
     if n[0].kind != nkEmpty:
       genLineDir(p, n)
       gen(p, n[0], r)
+      r.res = "var _ = " & r.res
   of nkAsmStmt: genAsmOrEmitStmt(p, n)
   of nkTryStmt, nkHiddenTryStmt: genTry(p, n, r)
   of nkRaiseStmt: genRaiseStmt(p, n)
diff --git a/tests/js/tdiscard.nim b/tests/js/tdiscard.nim
new file mode 100644
index 0000000000..9aa6ea1b18
--- /dev/null
+++ b/tests/js/tdiscard.nim
@@ -0,0 +1,3 @@
+import dom
+
+discard Node()
\ No newline at end of file