Current File : //opt/alt/alt-nodejs16/root/lib/node_modules/npm/node_modules.bundled/@npmcli/fs/lib/rm/polyfill.js
// this file is a modified version of the code in node core >=14.14.0
// which is, in turn, a modified version of the rimraf module on npm
// node core changes:
// - Use of the assert module has been replaced with core's error system.
// - All code related to the glob dependency has been removed.
// - Bring your own custom fs module is not currently supported.
// - Some basic code cleanup.
// changes here:
// - remove all callback related code
// - drop sync support
// - change assertions back to non-internal methods (see options.js)
// - throws ENOTDIR when rmdir gets an ENOENT for a path that exists in Windows
const errnos = require('os').constants.errno
const { join } = require('path')
const fs = require('../fs.js')
// error codes that mean we need to remove contents
const notEmptyCodes = new Set([
'ENOTEMPTY',
'EEXIST',
'EPERM',
])
// error codes we can retry later
const retryCodes = new Set([
'EBUSY',
'EMFILE',
'ENFILE',
'ENOTEMPTY',
'EPERM',
])
const isWindows = process.platform === 'win32'
const defaultOptions = {
retryDelay: 100,
maxRetries: 0,
recursive: false,
force: false,
}
// this is drastically simplified, but should be roughly equivalent to what
// node core throws
class ERR_FS_EISDIR extends Error {
constructor (path) {
super()
this.info = {
code: 'EISDIR',
message: 'is a directory',
path,
syscall: 'rm',
errno: errnos.EISDIR,
}
this.name = 'SystemError'
this.code = 'ERR_FS_EISDIR'
this.errno = errnos.EISDIR
this.syscall = 'rm'
this.path = path
this.message = `Path is a directory: ${this.syscall} returned ` +
`${this.info.code} (is a directory) ${path}`
}
toString () {
return `${this.name} [${this.code}]: ${this.message}`
}
}
class ENOTDIR extends Error {
constructor (path) {
super()
this.name = 'Error'
this.code = 'ENOTDIR'
this.errno = errnos.ENOTDIR
this.syscall = 'rmdir'
this.path = path
this.message = `not a directory, ${this.syscall} '${this.path}'`
}
toString () {
return `${this.name}: ${this.code}: ${this.message}`
}
}
// force is passed separately here because we respect it for the first entry
// into rimraf only, any further calls that are spawned as a result (i.e. to
// delete content within the target) will ignore ENOENT errors
const rimraf = async (path, options, isTop = false) => {
const force = isTop ? options.force : true
const stat = await fs.lstat(path)
.catch((err) => {
// we only ignore ENOENT if we're forcing this call
if (err.code === 'ENOENT' && force) {
return
}
if (isWindows && err.code === 'EPERM') {
return fixEPERM(path, options, err, isTop)
}
throw err
})
// no stat object here means either lstat threw an ENOENT, or lstat threw
// an EPERM and the fixPERM function took care of things. either way, we're
// already done, so return early
if (!stat) {
return
}
if (stat.isDirectory()) {
return rmdir(path, options, null, isTop)
}
return fs.unlink(path)
.catch((err) => {
if (err.code === 'ENOENT' && force) {
return
}
if (err.code === 'EISDIR') {
return rmdir(path, options, err, isTop)
}
if (err.code === 'EPERM') {
// in windows, we handle this through fixEPERM which will also try to
// delete things again. everywhere else since deleting the target as a
// file didn't work we go ahead and try to delete it as a directory
return isWindows
? fixEPERM(path, options, err, isTop)
: rmdir(path, options, err, isTop)
}
throw err
})
}
const fixEPERM = async (path, options, originalErr, isTop) => {
const force = isTop ? options.force : true
const targetMissing = await fs.chmod(path, 0o666)
.catch((err) => {
if (err.code === 'ENOENT' && force) {
return true
}
throw originalErr
})
// got an ENOENT above, return now. no file = no problem
if (targetMissing) {
return
}
// this function does its own lstat rather than calling rimraf again to avoid
// infinite recursion for a repeating EPERM
const stat = await fs.lstat(path)
.catch((err) => {
if (err.code === 'ENOENT' && force) {
return
}
throw originalErr
})
if (!stat) {
return
}
if (stat.isDirectory()) {
return rmdir(path, options, originalErr, isTop)
}
return fs.unlink(path)
}
const rmdir = async (path, options, originalErr, isTop) => {
if (!options.recursive && isTop) {
throw originalErr || new ERR_FS_EISDIR(path)
}
const force = isTop ? options.force : true
return fs.rmdir(path)
.catch(async (err) => {
// in Windows, calling rmdir on a file path will fail with ENOENT rather
// than ENOTDIR. to determine if that's what happened, we have to do
// another lstat on the path. if the path isn't actually gone, we throw
// away the ENOENT and replace it with our own ENOTDIR
if (isWindows && err.code === 'ENOENT') {
const stillExists = await fs.lstat(path).then(() => true, () => false)
if (stillExists) {
err = new ENOTDIR(path)
}
}
// not there, not a problem
if (err.code === 'ENOENT' && force) {
return
}
// we may not have originalErr if lstat tells us our target is a
// directory but that changes before we actually remove it, so
// only throw it here if it's set
if (originalErr && err.code === 'ENOTDIR') {
throw originalErr
}
// the directory isn't empty, remove the contents and try again
if (notEmptyCodes.has(err.code)) {
const files = await fs.readdir(path)
await Promise.all(files.map((file) => {
const target = join(path, file)
return rimraf(target, options)
}))
return fs.rmdir(path)
}
throw err
})
}
const rm = async (path, opts) => {
const options = { ...defaultOptions, ...opts }
let retries = 0
const errHandler = async (err) => {
if (retryCodes.has(err.code) && ++retries < options.maxRetries) {
const delay = retries * options.retryDelay
await promiseTimeout(delay)
return rimraf(path, options, true).catch(errHandler)
}
throw err
}
return rimraf(path, options, true).catch(errHandler)
}
const promiseTimeout = (ms) => new Promise((r) => setTimeout(r, ms))
module.exports = rm
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