Add upstream

wp-content/plugins/jetpack/modules/widgets/milestone/milestone.js

@@ -0,0 +1,49 @@
+/* global MilestoneConfig */
+
+var Milestone = ( function( $ ) {
+	var Milestone = function( args ) {
+		var $widget = $( '#' + args.id ),
+			id = args.id,
+			refresh = args.refresh * 1000;
+
+		this.timer = function() {
+			var instance = this;
+
+			$.ajax( {
+				url: MilestoneConfig.api_root + 'jetpack/v4/widgets/' + id,
+				success: function( result ) {
+					$widget.find( '.milestone-countdown' ).replaceWith( result.message );
+					refresh = result.refresh * 1000;
+
+					if ( ! refresh ) {
+						return;
+					}
+
+					setTimeout( function() {
+						instance.timer();
+					}, refresh );
+				},
+			} );
+		};
+
+		if ( refresh > 0 ) {
+			this.timer();
+		}
+	};
+	return function( args ) {
+		return new Milestone( args );
+	};
+} )( jQuery );
+
+( function() {
+	var i,
+		MilestoneInstances = {};
+
+	if ( typeof MilestoneConfig === 'undefined' ) {
+		return;
+	}
+
+	for ( i = 0; i < MilestoneConfig.instances.length; i++ ) {
+		MilestoneInstances[ i ] = new Milestone( MilestoneConfig.instances[ i ] );
+	}
+} )();