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# mkdirp Like `mkdir -p`, but in Node.js! Now with a modern API and no\* bugs! <small>\* may contain some bugs</small> # example ## pow.js ```js const mkdirp = require('mkdirp') // return value is a Promise resolving to the first directory created mkdirp('/tmp/foo/bar/baz').then(made => console.log(`made directories, starting with ${made}`)) ``` Output (where `/tmp/foo` already exists) ``` made directories, starting with /tmp/foo/bar ``` Or, if you don't have time to wait around for promises: ```js const mkdirp = require('mkdirp') // return value is the first directory created const made = mkdirp.sync('/tmp/foo/bar/baz') console.log(`made directories, starting with ${made}`) ``` And now /tmp/foo/bar/baz exists, huzzah! # methods ```js const mkdirp = require('mkdirp') ``` ## mkdirp(dir, [opts]) -> Promise<String | undefined> Create a new directory and any necessary subdirectories at `dir` with octal permission string `opts.mode`. If `opts` is a string or number, it will be treated as the `opts.mode`. If `opts.mode` isn't specified, it defaults to `0o777 & (~process.umask())`. Promise resolves to first directory `made` that had to be created, or `undefined` if everything already exists. Promise rejects if any errors are encountered. Note that, in the case of promise rejection, some directories _may_ have been created, as recursive directory creation is not an atomic operation. You can optionally pass in an alternate `fs` implementation by passing in `opts.fs`. Your implementation should have `opts.fs.mkdir(path, opts, cb)` and `opts.fs.stat(path, cb)`. You can also override just one or the other of `mkdir` and `stat` by passing in `opts.stat` or `opts.mkdir`, or providing an `fs` option that only overrides one of these. ## mkdirp.sync(dir, opts) -> String|null Synchronously create a new directory and any necessary subdirectories at `dir` with octal permission string `opts.mode`. If `opts` is a string or number, it will be treated as the `opts.mode`. If `opts.mode` isn't specified, it defaults to `0o777 & (~process.umask())`. Returns the first directory that had to be created, or undefined if everything already exists. You can optionally pass in an alternate `fs` implementation by passing in `opts.fs`. Your implementation should have `opts.fs.mkdirSync(path, mode)` and `opts.fs.statSync(path)`. You can also override just one or the other of `mkdirSync` and `statSync` by passing in `opts.statSync` or `opts.mkdirSync`, or providing an `fs` option that only overrides one of these. ## mkdirp.manual, mkdirp.manualSync Use the manual implementation (not the native one). This is the default when the native implementation is not available or the stat/mkdir implementation is overridden. ## mkdirp.native, mkdirp.nativeSync Use the native implementation (not the manual one). This is the default when the native implementation is available and stat/mkdir are not overridden. # implementation On Node.js v10.12.0 and above, use the native `fs.mkdir(p, {recursive:true})` option, unless `fs.mkdir`/`fs.mkdirSync` has been overridden by an option. ## native implementation - If the path is a root directory, then pass it to the underlying implementation and return the result/error. (In this case, it'll either succeed or fail, but we aren't actually creating any dirs.) - Walk up the path statting each directory, to find the first path that will be created, `made`. - Call `fs.mkdir(path, { recursive: true })` (or `fs.mkdirSync`) - If error, raise it to the caller. - Return `made`. ## manual implementation - Call underlying `fs.mkdir` implementation, with `recursive: false` - If error: - If path is a root directory, raise to the caller and do not handle it - If ENOENT, mkdirp parent dir, store result as `made` - stat(path) - If error, raise original `mkdir` error - If directory, return `made` - Else, raise original `mkdir` error - else - return `undefined` if a root dir, or `made` if set, or `path` ## windows vs unix caveat On Windows file systems, attempts to create a root directory (ie, a drive letter or root UNC path) will fail. If the root directory exists, then it will fail with `EPERM`. If the root directory does not exist, then it will fail with `ENOENT`. On posix file systems, attempts to create a root directory (in recursive mode) will succeed silently, as it is treated like just another directory that already exists. (In non-recursive mode, of course, it fails with `EEXIST`.) In order to preserve this system-specific behavior (and because it's not as if we can create the parent of a root directory anyway), attempts to create a root directory are passed directly to the `fs` implementation, and any errors encountered are not handled. ## native error caveat The native implementation (as of at least Node.js v13.4.0) does not provide appropriate errors in some cases (see [nodejs/node#31481](https://github.com/nodejs/node/issues/31481) and [nodejs/node#28015](https://github.com/nodejs/node/issues/28015)). In order to work around this issue, the native implementation will fall back to the manual implementation if an `ENOENT` error is encountered. # choosing a recursive mkdir implementation There are a few to choose from! Use the one that suits your needs best :D ## use `fs.mkdir(path, {recursive: true}, cb)` if: - You wish to optimize performance even at the expense of other factors. - You don't need to know the first dir created. - You are ok with getting `ENOENT` as the error when some other problem is the actual cause. - You can limit your platforms to Node.js v10.12 and above. - You're ok with using callbacks instead of promises. - You don't need/want a CLI. - You don't need to override the `fs` methods in use. ## use this module (mkdirp 1.x) if: - You need to know the first directory that was created. - You wish to use the native implementation if available, but fall back when it's not. - You prefer promise-returning APIs to callback-taking APIs. - You want more useful error messages than the native recursive mkdir provides (at least as of Node.js v13.4), and are ok with re-trying on `ENOENT` to achieve this. - You need (or at least, are ok with) a CLI. - You need to override the `fs` methods in use. ## use [`make-dir`](http://npm.im/make-dir) if: - You do not need to know the first dir created (and wish to save a few `stat` calls when using the native implementation for this reason). - You wish to use the native implementation if available, but fall back when it's not. - You prefer promise-returning APIs to callback-taking APIs. - You are ok with occasionally getting `ENOENT` errors for failures that are actually related to something other than a missing file system entry. - You don't need/want a CLI. - You need to override the `fs` methods in use. ## use mkdirp 0.x if: - You need to know the first directory that was created. - You need (or at least, are ok with) a CLI. - You need to override the `fs` methods in use. - You're ok with using callbacks instead of promises. - You are not running on Windows, where the root-level ENOENT errors can lead to infinite regress. - You think vinyl just sounds warmer and richer for some weird reason. - You are supporting truly ancient Node.js versions, before even the advent of a `Promise` language primitive. (Please don't. You deserve better.) # cli This package also ships with a `mkdirp` command. ``` $ mkdirp -h usage: mkdirp [DIR1,DIR2..] {OPTIONS} Create each supplied directory including any necessary parent directories that don't yet exist. If the directory already exists, do nothing. OPTIONS are: -m<mode> If a directory needs to be created, set the mode as an octal --mode=<mode> permission string. -v --version Print the mkdirp version number -h --help Print this helpful banner -p --print Print the first directories created for each path provided --manual Use manual implementation, even if native is available ``` # install With [npm](http://npmjs.org) do: ``` npm install mkdirp ``` to get the library locally, or ``` npm install -g mkdirp ``` to get the command everywhere, or ``` npx mkdirp ... ``` to run the command without installing it globally. # platform support This module works on node v8, but only v10 and above are officially supported, as Node v8 reached its LTS end of life 2020-01-01, which is in the past, as of this writing. # license MIT