Function layout

src/layout.ts:705–711

(prepared: PreparedText, maxWidth: number, lineHeight: number)

//   - Trailing whitespace hangs past the line edge (doesn't trigger breaks)
//   - Segments wider than maxWidth are broken at grapheme boundaries
export function layout(prepared: PreparedText, maxWidth: number, lineHeight: number): LayoutResult {
  // Keep the resize hot path specialized. `layoutWithLines()` shares the same
  // break semantics but also tracks line ranges; the extra bookkeeping is too
  // expensive to pay on every hot-path `layout()` call.
  const lineCount = countPreparedLines(getInternalPrepared(prepared), maxWidth)
  return { lineCount, height: lineCount * lineHeight }
}

function createLayoutLine(
  prepared: PreparedTextWithSegments,