Function expansionCacheKey

src/ui/diff/diffSectionGeometry.ts:77–93

Stable suffix that captures expansion state for the geometry cache key.

(
  expandedKeys: ReadonlySet<string>,
  sourceStatus: FileSourceStatus | undefined,
)

/** Stable suffix that captures expansion state for the geometry cache key. */
function expansionCacheKey(
  expandedKeys: ReadonlySet<string>,
  sourceStatus: FileSourceStatus | undefined,
) {
  if (expandedKeys.size === 0) {
    return "";
  }

  const sortedKeys = [...expandedKeys].sort().join(",");
  const statusKey =
    sourceStatus === undefined
      ? "pending"
      : sourceStatus.kind === "loaded"
        ? `loaded:${sourceTextFingerprint(sourceStatus.text)}`
        : sourceStatus.kind;
  return `:${sortedKeys}:${statusKey}`;
}

interface SectionGeometryCacheEntry {
  key: string;