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-rw-r--r--src/traversing.js2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/traversing.js b/src/traversing.js
index 8525c0a5d..50cd2d6ee 100644
--- a/src/traversing.js
+++ b/src/traversing.js
@@ -9,6 +9,8 @@ define( [
"./selector"
], function( jQuery, indexOf, dir, siblings, rneedsContext ) {
+"use strict";
+
var rparentsprev = /^(?:parents|prev(?:Until|All))/,
// Methods guaranteed to produce a unique set when starting from a unique set