From 4148ad399a01a8532986e359e726872d0e207885 Mon Sep 17 00:00:00 2001
From: Gareth Jones <jones258@gmail.com>
Date: Thu, 11 Jul 2019 18:22:53 +1200
Subject: [PATCH] =?UTF-8?q?fix:=20=F0=9F=90=9B=20refactor=20`#symlink`=20t?=
 =?UTF-8?q?o=20be=20compatible=20w/=20`strictNullChecks`?=
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---
 src/volume.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/volume.ts b/src/volume.ts
index 78fa7124..a9edcf52 100644
--- a/src/volume.ts
+++ b/src/volume.ts
@@ -1406,8 +1406,9 @@ export class Volume {
 
   symlink(target: TFilePath, path: TFilePath, callback: TCallback<void>);
   symlink(target: TFilePath, path: TFilePath, type: TSymlinkType, callback: TCallback<void>);
-  symlink(target: TFilePath, path: TFilePath, a, b?) {
-    const [type, callback] = getArgAndCb<TSymlinkType, TCallback<void>>(a, b);
+  symlink(target: TFilePath, path: TFilePath, a: TSymlinkType | TCallback<void>, b?: TCallback<void>) {
+    const callback: TCallback<void> = validateCallback(typeof a === 'function' ? a : b);
+
     const targetFilename = pathToFilename(target);
     const pathFilename = pathToFilename(path);
     this.wrapAsync(this.symlinkBase, [targetFilename, pathFilename], callback);