File jquery.nestable.js has 393 lines of code (exceeds 250 allowed). Consider refactoring.

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/*!
 * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
 * Dual-licensed under the BSD or MIT licenses
 */
;(function($, window, document, undefined)

Function dragMove has 117 lines of code (exceeds 25 allowed). Consider refactoring.

Open

        dragMove: function(e)
        {
            var list, parent, prev, next, depth,
                opt   = this.options,
                mouse = this.mouse;

Function init has 60 lines of code (exceeds 25 allowed). Consider refactoring.

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        init: function()
        {
            var list = this;

            list.reset();

Method update_tree has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring.

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            def update_tree(tree_nodes, parent_node = nil)
              tree_nodes.each do |key, value|
                model = @abstract_model.model.find(value['id'].to_s)
                model.parent = parent_node || nil
                model.send("#{@position_field}=".to_sym, (key.to_i + 1)) if @position_field.present?

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Function dragStart has 27 lines of code (exceeds 25 allowed). Consider refactoring.

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        dragStart: function(e)
        {
            var mouse    = this.mouse,
                target   = $(e.target),
                dragItem = target.closest(this.options.itemNodeName);

Consider simplifying this complex logical expression.

Open

                if (!handle.length || list.dragEl || (!hasTouch && e.button !== 0) || (hasTouch && e.touches.length !== 1)) {
                    return;
                }

Method nested_tree_nodes has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    def nested_tree_nodes(tree_nodes = [])
      return if tree_nodes.nil?
      tree_nodes.map do |tree_node, sub_tree_nodes|
        li_classes = 'dd-item dd3-item'

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