2.0 KiB
2.0 KiB
@npmcli/fs
polyfills, and extensions, of the core fs
module.
Features
- all exposed functions return promises
fs.rm
polyfill for node versions < 14.14.0fs.mkdir
polyfill adding support for therecursive
andforce
options in node versions < 10.12.0fs.copyFile
extended to accept anowner
optionfs.mkdir
extended to accept anowner
optionfs.mkdtemp
extended to accept anowner
optionfs.writeFile
extended to accept anowner
optionfs.withTempDir
addedfs.withOwner
addedfs.withOwnerSync
addedfs.cp
polyfill for node < 16.7.0
The owner
option
The copyFile
, mkdir
, mkdtemp
, writeFile
, and withTempDir
functions
all accept a new owner
property in their options. It can be used in two ways:
{ owner: { uid: 100, gid: 100 } }
- set theuid
andgid
explicitly{ owner: 100 }
- use one value, will set bothuid
andgid
the same
The special string 'inherit'
may be passed instead of a number, which will
cause this module to automatically determine the correct uid
and/or gid
from the nearest existing parent directory of the target.
fs.withTempDir(root, fn, options) -> Promise
Parameters
root
: the directory in which to create the temporary directoryfn
: a function that will be called with the path to the temporary directoryoptions
tmpPrefix
: a prefix to be used in the generated directory name
Usage
The withTempDir
function creates a temporary directory, runs the provided
function (fn
), then removes the temporary directory and resolves or rejects
based on the result of fn
.
const fs = require('@npmcli/fs')
const os = require('os')
// this function will be called with the full path to the temporary directory
// it is called with `await` behind the scenes, so can be async if desired.
const myFunction = async (tempPath) => {
return 'done!'
}
const main = async () => {
const result = await fs.withTempDir(os.tmpdir(), myFunction)
// result === 'done!'
}
main()