Function pickDiverseCoreFiles

src/utils/exampleCommands.ts:56–84

(
  sortedPaths: string[],
  want: number,
)

 * Returns empty array if fewer than `want` core files are available.
 */
export function pickDiverseCoreFiles(
  sortedPaths: string[],
  want: number,
): string[] {
  const picked: string[] = []
  const seenBasenames = new Set<string>()
  const dirTally = new Map<string, number>()

  // Greedy: on each pass allow +1 file per directory. Keeps the
  // top-5 from collapsing into a single hot folder while still
  // letting a dominant folder contribute multiple files if the
  // repo is narrow.
  for (let cap = 1; picked.length < want && cap <= want; cap++) {
    for (const p of sortedPaths) {
      if (picked.length >= want) break
      if (!isCoreFile(p)) continue
      const lastSep = Math.max(p.lastIndexOf('/'), p.lastIndexOf('\\'))
      const base = lastSep >= 0 ? p.slice(lastSep + 1) : p
      if (!base || seenBasenames.has(base)) continue
      const dir = lastSep >= 0 ? p.slice(0, lastSep) : '.'
      if ((dirTally.get(dir) ?? 0) >= cap) continue
      picked.push(base)
      seenBasenames.add(base)
      dirTally.set(dir, (dirTally.get(dir) ?? 0) + 1)
    }
  }

  return picked.length >= want ? picked : []
}

async function getFrequentlyModifiedFiles(): Promise<string[]> {
  if (process.env.NODE_ENV === 'test') return []