@jsvision/ui / MarkerStyle

Type Alias: MarkerStyle

MarkerStyle = "tv" | "brackets" | "triangle"

Defined in: ui/src/tree/graph.ts:81

How a Tree draws its per-row expand/collapse marker.

• 'tv' — the default: a single + on a collapsed node, ─ on an expanded node or a leaf.
• 'brackets' — pure-ASCII [+]/[-] on collapsible nodes (3 blank cells on a leaf); the most legible option and the safe fallback when Unicode is unavailable.
• 'triangle' — ▸/▾ on collapsible nodes (a single blank on a leaf); needs a Unicode terminal and degrades to 'brackets' when the caps report no Unicode.

All markers are single-width, so a style change never disturbs column alignment.