1 files changed, 32 insertions, 0 deletions
diff --git a/library/moment/src/lib/utils/deprecate.js b/library/moment/src/lib/utils/deprecate.js
new file mode 100644
index 000000000..df4286b84
--- /dev/null
+++ b/library/moment/src/lib/utils/deprecate.js
@@ -0,0 +1,32 @@
+import extend from './extend';
+import { hooks } from './hooks';
+
+function warn(msg) {
+    if (hooks.suppressDeprecationWarnings === false && typeof console !== 'undefined' && console.warn) {
+        console.warn('Deprecation warning: ' + msg);
+    }
+}
+
+export function deprecate(msg, fn) {
+    var firstTime = true;
+
+    return extend(function () {
+        if (firstTime) {
+            warn(msg + '\n' + (new Error()).stack);
+            firstTime = false;
+        }
+        return fn.apply(this, arguments);
+    }, fn);
+}
+
+var deprecations = {};
+
+export function deprecateSimple(name, msg) {
+    if (!deprecations[name]) {
+        warn(msg);
+        deprecations[name] = true;
+    }
+}
+
+hooks.suppressDeprecationWarnings = false;
+