From 059fd66d38dc4f199c5e5984eabf2f53348ef4a9 Mon Sep 17 00:00:00 2001
From: Cory Forsyth <cory.forsyth@gmail.com>
Date: Tue, 6 Sep 2016 17:28:29 -0400
Subject: [PATCH] fix(deprecate): Make deprecate accept conditional argument
 (#488)

---
 src/js/utils/deprecate.js | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/js/utils/deprecate.js b/src/js/utils/deprecate.js
index 1de716863..9821b0e65 100644
--- a/src/js/utils/deprecate.js
+++ b/src/js/utils/deprecate.js
@@ -1,3 +1,14 @@
-export default function deprecate(message) {
-  console.log(`[mobiledoc-kit] [DEPRECATED]: ${message}`); // jshint ignore:line
+/**
+ * Usage:
+ * Without a conditional, always prints deprecate message:
+ *   `deprecate('This is deprecated')`
+ *
+ * Conditional deprecation, works similarly to `assert`, prints deprecation if
+ * conditional is false:
+ *   `deprecate('Deprecated only if foo !== bar', foo === bar)`
+ */
+export default function deprecate(message, conditional=false) {
+  if (!conditional) {
+    console.log(`[mobiledoc-kit] [DEPRECATED]: ${message}`); // jshint ignore:line
+  }
 }