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Overview

Display nested nodes with expand/collapse.

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Import

import { Tree } from 'nikcli-tui';

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Usage

new Tree({ parent: screen, data: [{ label: 'Node 1', children: [{ label: 'Child' }] }] });

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Live Preview

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Run Locally

npm run tsx:core-gallery

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Props

  • data: Array of { label: string; children?: TreeNode[]; icon?: string; expanded?: boolean; selectable?: boolean; data?: any }
  • onSelect?: (path: string[]) => void — Fires when a selectable node is chosen.
  • expandable?: boolean — Enable key toggling (default true).
  • defaultExpanded?: boolean — Expand all by default.
  • showIcons?: boolean — Display node icons.
  • indentSize?: number — Reserved; indentation width.
  • onExpand?: (node, expanded) => void — When a node expands.
  • onCollapse?: (node) => void — When a node collapses.

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Methods

  • setData(data), addNode(parentPath, node), removeNode(path).
  • expand(path), collapse(path), expandAll(), collapseAll().
  • setNodeExpanded(path, bool), setNodeLabel(path, label), setNodeIcon(path, icon), setNodeSelectable(path, bool).
  • setNodeData(path, data), getNodeData(path), getNode(path).
  • isNodeExpanded(path), isNodeSelectable(path).
  • getExpandedNodesCount(), getTreeDepth(), getNodeCount().
  • findNodesByLabel(label), searchNodes(query).

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Keyboard

  • Space/Enter: toggle expand/collapse on selected node when expandable.

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Installation

npm i nikcli-tui

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Import

import { Tree } from 'nikcli-tui';

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Quick Start

new Tree({ parent: screen, top: 1, left: 2, width: 40, height: 12, data: [ { label: 'Node 1', children: [ { label: 'Child' } ] } ], defaultExpanded: true, showIcons: false });

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Production Examples

const tree = new Tree({ parent: screen, top: 1, left: 2, width: 40, height: 12, data: [ { label: 'src', children: [ { label: 'index.ts' } ] } ], expandable: true });
tree.expand(['src']);

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Best Practices

  • Mantieni etichette brevi; usa searchNodes per trovare path profonde.