Function diffRowIndex

packages/session-ui/src/pierre/diff-selection.ts:32–43

(root: ShadowRoot, split: boolean, line: number, side: DiffSelectionSide | undefined)

}

export function diffRowIndex(root: ShadowRoot, split: boolean, line: number, side: DiffSelectionSide | undefined) {
  const rows = Array.from(root.querySelectorAll(`[data-line="${line}"], [data-alt-line="${line}"]`)).filter(
    (node): node is HTMLElement => node instanceof HTMLElement,
  )
  if (rows.length === 0) return

  const target = side ?? "additions"
  for (const row of rows) {
    if (findDiffSide(row) === target) return diffLineIndex(split, row)
    if (parseInt(row.dataset.altLine ?? "", 10) === line) return diffLineIndex(split, row)
  }
}

export function fixDiffSelection(root: ShadowRoot | undefined, range: SelectedLineRange | null) {
  if (!range) return range