rball"></a> `> pacote.tarball(spec, [opts])`

Fetches package data identified by `<spec>` and returns the data as a buffer.

This API has two variants:

* `pacote.tarball.stream(spec, [opts])` - Same as `pacote.tarball`, except it returns a stream instead of a Promise.
* `pacote.tarball.toFile(spec, dest, [opts])` - Instead of returning data directly, data will be written directly to `dest`, and create any required directories along the way.

##### Example

```javascript
pacote.tarball('pacote@1.0.0', { cache: './my-cache' }).then(data => {
  // data is the tarball data for pacote@1.0.0
})
```

#### <a name="tarball-stream"></a> `> pacote.tarball.stream(spec, [opts])`

Same as `pacote.tarball`, except it returns a stream instead of a Promise.

##### Example

```javascript
pacote.tarball.stream('pacote@1.0.0')
.pipe(fs.createWriteStream('./pacote-1.0.0.tgz'))
```

#### <a name="tarball-to-file"></a> `> pacote.tarball.toFile(spec, dest, [opts])`

Like `pacote.tarball`, but instead of returning data directly, data will be
written directly to `dest`, and create any required directories along the way.

##### Example

```javascript
pacote.tarball.toFile('pacote@1.0.0', './pacote-1.0.0.tgz')
.then(() => /* pacote tarball written directly to ./pacote-1.0.0.tgz */)
```

#### <a name="prefetch"></a> `> pacote.prefetch(spec, [opts])`

##### THIS API IS DEPRECATED. USE `pacote.tarball()` INSTEAD

Fetches package data identified by `<spec>`, usually for the purpose of warming
up the local package cache (with `opts.cache`). It does not return anything.

##### Example

```javascript
pacote.prefetch('pacote@1.0.0', { cache: './my-cache' }).then(() => {
  // ./my-cache now has both the manifest and tarball for `pacote@1.0.0`.
})
```

#### <a name="clearMemoized"></a> `> pacote.clearMemoized()`

This utility function can be used to force pacote to release its references
to any memoized data in its various internal caches. It might help free
some memory.

```javascript
pacote.manifest(...).then(() => pacote.clearMemoized)

```

#### <a name="options"></a> `> options`

##### `opts.integrity`

If provided, pacote will confirm that the relevant integrity hash for each
operation's results matches the given digest. The call will return `EINTEGRITY`
if the check fails.

Additionally, `pacote.extract` will use this integrity string check the cache
directly for matching contents before performing any other operations.

##### `opts.cache`
##### `opts.cacheUid`/`opts.cacheGid`
##### `opts.uid`/`opts.gid`
##### `opts.scope`
##### `opts.registry`
##### `opts.@somescope:registry`
##### `opts.auth`
##### `opts.log`
##### `opts.maxSockets`

Default: `silentNpmLog`

An [`npmlog`](https://npm.im/npmlog)-compatible logger. Will be used to log
various events at the levels specified by `npmlog`.