igniteui-angular/lib/grids/tree-grid/tree-grid.interfaces.d.ts

Ignite UI for Angular is a dependency-free Angular toolkit for building modern web apps

export interface ITreeGridRecord {
    key: any;
    data: any;
    children?: ITreeGridRecord[];
    parent?: ITreeGridRecord;
    level?: number;
    isFilteredOutParent?: boolean;
    expanded?: boolean;
}