JSVision

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@jsvision/ui / MarkerStyle

Type Alias: MarkerStyle ​

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

Defined in: ui/src/tree/graph.ts:89

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, drawn flush against the node text (no separating space).
  • 'brackets' — pure-ASCII [+]/[-] on collapsible nodes, each followed by one space before the text; a leaf shows just that single space. The most legible option and the safe fallback when Unicode is unavailable.
  • 'triangle' — ▸/▾ on collapsible nodes, each followed by one space; a leaf shows just that single space. Needs a Unicode terminal and degrades to 'brackets' when the caps report no Unicode.

In 'brackets' and 'triangle' a leaf's end graphic is narrower than a parent's (no marker), so leaf and folder text are intentionally ragged rather than column-aligned; 'tv' keeps every marker one cell, so its columns line up.