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-# @npmcli/git
-
-A utility for spawning git from npm CLI contexts.
-
-This is _not_ an implementation of git itself, it's just a thing that
-spawns child processes to tell the system git CLI implementation to do
-stuff.
-
-## USAGE
-
-```js
-const git = require('@npmcli/git')
-git.clone('git://foo/bar.git', 'some-branch', 'some-path', opts) // clone a repo
-  .then(() => git.spawn(['checkout', 'some-branch'], {cwd: 'bar'}))
-  .then(() => git.spawn(['you get the idea']))
-```
-
-## API
-
-Most methods take an options object.  Options are described below.
-
-### `git.spawn(args, opts = {})`
-
-Launch a `git` subprocess with the arguments specified.
-
-All the other functions call this one at some point.
-
-Processes are launched using
-[`@npmcli/promise-spawn`](http://npm.im/@npmcli/promise-spawn), with the
-`stdioString: true` option enabled by default, since git output is
-generally in readable string format.
-
-Return value is a `Promise` that resolves to a result object with `{cmd,
-args, code, signal, stdout, stderr}` members, or rejects with an error with
-the same fields, passed back from
-[`@npmcli/promise-spawn`](http://npm.im/@npmcli/promise-spawn).
-
-### `git.clone(repo, ref = 'HEAD', target = null, opts = {})` -> `Promise<sha String>`
-
-Clone the repository into `target` path (or the default path for the name
-of the repository), checking out `ref`.
-
-Return value is the sha of the current HEAD in the locally cloned
-repository.
-
-In lieu of a specific `ref`, you may also pass in a `spec` option, which is
-a [`npm-package-arg`](http://npm.im/npm-package-arg) object for a `git`
-package dependency reference.  In this way, you can select SemVer tags
-within a range, or any git committish value.  For example:
-
-```js
-const npa = require('npm-package-arg')
-git.clone('git@github.com:npm/git.git', '', null, {
-  spec: npa('github:npm/git#semver:1.x'),
-})
-
-// only gitRange and gitCommittish are relevant, so this works, too
-git.clone('git@github.com:npm/git.git', null, null, {
-  spec: { gitRange: '1.x' }
-})
-```
-
-This will automatically do a shallow `--depth=1` clone on any hosts that
-are known to support it.  To force a shallow or deep clone, you can set the
-`gitShallow` option to `true` or `false` respectively.
-
-### `git.revs(repo, opts = {})` -> `Promise<rev doc Object>`
-
-Fetch a representation of all of the named references in a given
-repository.  The resulting doc is intentionally somewhat
-[packument](https://www.npmjs.com/package/pacote#packuments)-like, so that
-git semver ranges can be applied using the same
-[`npm-pick-manifest`](http://npm.im/npm-pick-manifest) logic.
-
-The resulting object looks like:
-
-```js
-revs = {
-  versions: {
-    // all semver-looking tags go in here...
-    // version: { sha, ref, rawRef, type }
-    '1.0.0': {
-      sha: '1bc5fba3353f8e1b56493b266bc459276ab23139',
-      ref: 'v1.0.0',
-      rawRef: 'refs/tags/v1.0.0',
-      type: 'tag',
-    },
-  },
-  'dist-tags': {
-    HEAD: '1.0.0',
-    latest: '1.0.0',
-  },
-  refs: {
-    // all the advertised refs that can be cloned down remotely
-    HEAD: { sha, ref, rawRef, type: 'head' },
-    master: { ... },
-    'v1.0.0': { ... },
-    'refs/tags/v1.0.0': { ... },
-  },
-  shas: {
-    // all named shas referenced above
-    // sha: [list, of, refs]
-    '6b2501f9183a1753027a9bf89a184b7d3d4602c7': [
-      'HEAD',
-      'master',
-      'refs/heads/master',
-    ],
-    '1bc5fba3353f8e1b56493b266bc459276ab23139': [ 'v1.0.0', 'refs/tags/v1.0.0' ],
-  },
-}
-```
-
-### `git.is(opts)` -> `Promise<Boolean>`
-
-Resolve to `true` if the path argument refers to the root of a git
-repository.
-
-It does this by looking for a file in `${path}/.git/index`, which is not an
-airtight indicator, but at least avoids being fooled by an empty directory
-or a file named `.git`.
-
-### `git.find(opts)` -> `Promise<String | null>`
-
-Given a path, walk up the file system tree until a git repo working
-directory is found.  Since this calls `stat` a bunch of times, it's
-probably best to only call it if you're reasonably sure you're likely to be
-in a git project somewhere.
-
-Resolves to `null` if not in a git project.
-
-### `git.isClean(opts = {})` -> `Promise<Boolean>`
-
-Return true if in a git dir, and that git dir is free of changes.  This
-will resolve `true` if the git working dir is clean, or `false` if not, and
-reject if the path is not within a git directory or some other error
-occurs.
-
-## OPTIONS
-
-- `retry` An object to configure retry behavior for transient network
-  errors with exponential backoff.
-  - `retries`: Defaults to `opts.fetchRetries` or 2
-  - `factor`: Defaults to `opts.fetchRetryFactor` or 10
-  - `maxTimeout`: Defaults to `opts.fetchRetryMaxtimeout` or 60000
-  - `minTimeout`: Defaults to `opts.fetchRetryMintimeout` or 1000
-- `git` Path to the `git` binary to use.  Will look up the first `git` in
-  the `PATH` if not specified.
-- `spec` The [`npm-package-arg`](http://npm.im/npm-package-arg) specifier
-  object for the thing being fetched (if relevant).
-- `fakePlatform` set to a fake value of `process.platform` to use.  (Just
-  for testing `win32` behavior on Unix, and vice versa.)
-- `cwd` The current working dir for the git command.  Particularly for
-  `find` and `is` and `isClean`, it's good to know that this defaults to
-  `process.cwd()`, as one might expect.
-- Any other options that can be passed to
-  [`@npmcli/promise-spawn`](http://npm.im/@npmcli/promise-spawn), or
-  `child_process.spawn()`.