constructor( targetNode, sourceNode ) {

		super();

		/**
		 * The target node.
		 *
		 * @type {Node}
		 */
		this.targetNode = targetNode;

		/**
		 * The source node.
		 *
		 * @type {Node}
		 */
		this.sourceNode = sourceNode;

		/**
		 * This flag can be used for type testing.
		 *
		 * @type {boolean}
		 * @readonly
		 * @default true
		 */
		this.isAssignNode = true;

	}
Constructs a new assign node.

@param {Node} targetNode - The target node.
@param {Node} sourceNode - The source type.