primeng/api/treenode.d.ts

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export interface TreeNode {
    label?: string;
    data?: any;
    icon?: any;
    expandedIcon?: any;
    collapsedIcon?: any;
    children?: TreeNode[];
    leaf?: boolean;
    expanded?: boolean;
    type?: string;
    parent?: TreeNode;
    partialSelected?: boolean;
    styleClass?: string;
    draggable?: boolean;
    droppable?: boolean;
    selectable?: boolean;
    key?: string;
}