Function findDiffSide

packages/session-ui/src/pierre/diff-selection.ts:5–16

(node: HTMLElement)

export type DiffSelectionSide = "additions" | "deletions"

export function findDiffSide(node: HTMLElement): DiffSelectionSide {
  const line = node.closest("[data-line], [data-alt-line]")
  if (line instanceof HTMLElement) {
    const type = line.dataset.lineType
    if (type === "change-deletion") return "deletions"
    if (type === "change-addition" || type === "change-additions") return "additions"
  }

  const code = node.closest("[data-code]")
  if (!(code instanceof HTMLElement)) return "additions"
  return code.hasAttribute("data-deletions") ? "deletions" : "additions"
}

export function diffLineIndex(split: boolean, node: HTMLElement) {
  const raw = node.dataset.lineIndex