How to use the mobiledoc-kit/utils/array-utils.filter function in mobiledoc-kit

let nodes = [];

    switch (mutation.type) {
      case MUTATION.CHARACTER_DATA:
        nodes.push(mutation.target);
        break;
      case MUTATION.NODES_CHANGED:
        forEach(mutation.addedNodes, n => nodes.push(n));
        if (mutation.removedNodes.length) {
          nodes.push(mutation.target);
        }
        break;
    }

    let element = this.editor.element;
    let attachedNodes = filter(nodes, node => containsNode(element, node));
    return attachedNodes;
  }

_trigger(context, type, event) {
    forEach(
      filter(this._listeners, ([_context, _type]) => {
        return _context === context && _type === type;
      }),
      ([context,, listener]) => {
        listener.call(context, event);
      }
    );
  }