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https://youtu.be/uhRWMGBjlO8?t=537\n//\n// 1. readdir\n// 2. for each entry\n//   a. if a non-empty directory, recurse\n//   b. if an empty directory, move to random hidden file name in $TEMP\n//   c. unlink/rmdir $TEMP\n//\n// This works around the fact that unlink/rmdir is non-atomic and takes\n// a non-deterministic amount of time to complete.\n//\n// However, it is HELLA SLOW, like 2-10x slower than a naive recursive rm.\n\nimport { basename, parse, resolve } from 'path'\nimport { defaultTmp, defaultTmpSync } from './default-tmp.js'\nimport { ignoreENOENT, ignoreENOENTSync } from './ignore-enoent.js'\nimport {\n  lstatSync,\n  promises,\n  renameSync,\n  rmdirSync,\n  unlinkSync,\n} from './fs.js'\nimport { Dirent, Stats } from 'fs'\nimport { RimrafAsyncOptions, RimrafSyncOptions } from './index.js'\nimport { readdirOrError, readdirOrErrorSync } from './readdir-or-error.js'\nimport { fixEPERM, fixEPERMSync } from './fix-eperm.js'\nimport { errorCode } from './error.js'\nconst { lstat, rename, unlink, rmdir } = promises\n\n// crypto.randomBytes is much slower, and Math.random() is enough here\nconst uniqueFilename = (path: string) =>\n  `.${basename(path)}.${Math.random()}`\n\nconst unlinkFixEPERM = fixEPERM(unlink)\nconst unlinkFixEPERMSync = fixEPERMSync(unlinkSync)\n\nexport const rimrafMoveRemove = async (\n  path: string,\n  opt: RimrafAsyncOptions,\n) => {\n  opt?.signal?.throwIfAborted()\n  return (\n    (await ignoreENOENT(\n      lstat(path).then(stat => rimrafMoveRemoveDir(path, opt, stat)),\n    )) ?? true\n  )\n}\n\nconst rimrafMoveRemoveDir = async (\n  path: string,\n  opt: RimrafAsyncOptions,\n  ent: Dirent | Stats,\n): Promise<boolean> => {\n  opt?.signal?.throwIfAborted()\n  if (!opt.tmp) {\n    return rimrafMoveRemoveDir(\n      path,\n      { ...opt, tmp: await defaultTmp(path) },\n      ent,\n    )\n  }\n  if (path === opt.tmp && parse(path).root !== path) {\n    throw new Error('cannot delete temp directory used for deletion')\n  }\n\n  const entries = ent.isDirectory() ? await readdirOrError(path) : null\n  if (!Array.isArray(entries)) {\n    // this can only happen if lstat/readdir lied, or if the dir was\n    // swapped out with a file at just the right moment.\n    /* c8 ignore start */\n    if (entries) {\n      if (errorCode(entries) === 'ENOENT') {\n        return true\n      }\n      if (errorCode(entries) !== 'ENOTDIR') {\n        throw entries\n      }\n    }\n    /* c8 ignore stop */\n    if (opt.filter && !(await opt.filter(path, ent))) {\n      return false\n    }\n    await ignoreENOENT(tmpUnlink(path, opt.tmp, unlinkFixEPERM))\n    return true\n  }\n\n  const removedAll = (\n    await Promise.all(\n      entries.map(ent =>\n        rimrafMoveRemoveDir(resolve(path, ent.name), opt, ent),\n      ),\n    )\n  ).every(v => v === true)\n  if (!removedAll) {\n    return false\n  }\n\n  // we don't ever ACTUALLY try to unlink /, because that can never work\n  // but when preserveRoot is false, we could be operating on it.\n  // No need to check if preserveRoot is not false.\n  if (opt.preserveRoot === false && path === parse(path).root) {\n    return false\n  }\n  if (opt.filter && !(await opt.filter(path, ent))) {\n    return false\n  }\n  await ignoreENOENT(tmpUnlink(path, opt.tmp, rmdir))\n  return true\n}\n\nconst tmpUnlink = async <T>(\n  path: string,\n  tmp: string,\n  rm: (p: string) => Promise<T>,\n) => {\n  const tmpFile = resolve(tmp, uniqueFilename(path))\n  await rename(path, tmpFile)\n  return await rm(tmpFile)\n}\n\nexport const rimrafMoveRemoveSync = (\n  path: string,\n  opt: RimrafSyncOptions,\n) => {\n  opt?.signal?.throwIfAborted()\n  return (\n    ignoreENOENTSync(() =>\n      rimrafMoveRemoveDirSync(path, opt, lstatSync(path)),\n    ) ?? true\n  )\n}\n\nconst rimrafMoveRemoveDirSync = (\n  path: string,\n  opt: RimrafSyncOptions,\n  ent: Dirent | Stats,\n): boolean => {\n  opt?.signal?.throwIfAborted()\n  if (!opt.tmp) {\n    return rimrafMoveRemoveDirSync(\n      path,\n      { ...opt, tmp: defaultTmpSync(path) },\n      ent,\n    )\n  }\n  const tmp: string = opt.tmp\n\n  if (path === opt.tmp && parse(path).root !== path) {\n    throw new Error('cannot delete temp directory used for deletion')\n  }\n\n  const entries = ent.isDirectory() ? readdirOrErrorSync(path) : null\n  if (!Array.isArray(entries)) {\n    // this can only happen if lstat/readdir lied, or if the dir was\n    // swapped out with a file at just the right moment.\n    /* c8 ignore start */\n    if (entries) {\n      if (errorCode(entries) === 'ENOENT') {\n        return true\n      }\n      if (errorCode(entries) !== 'ENOTDIR') {\n        throw entries\n      }\n    }\n    /* c8 ignore stop */\n    if (opt.filter && !opt.filter(path, ent)) {\n      return false\n    }\n    ignoreENOENTSync(() => tmpUnlinkSync(path, tmp, unlinkFixEPERMSync))\n    return true\n  }\n\n  let removedAll = true\n  for (const ent of entries) {\n    const p = resolve(path, ent.name)\n    removedAll = rimrafMoveRemoveDirSync(p, opt, ent) && removedAll\n  }\n  if (!removedAll) {\n    return false\n  }\n  if (opt.preserveRoot === false && path === parse(path).root) {\n    return false\n  }\n  if (opt.filter && !opt.filter(path, ent)) {\n    return false\n  }\n  ignoreENOENTSync(() => tmpUnlinkSync(path, tmp, rmdirSync))\n  return true\n}\n\nconst tmpUnlinkSync = (\n  path: string,\n  tmp: string,\n  rmSync: (p: string) => void,\n) => {\n  const tmpFile = resolve(tmp, uniqueFilename(path))\n  renameSync(path, tmpFile)\n  return rmSync(tmpFile)\n}\n"]}