export type Options = {
	/**
	Should be the same as your project name in `package.json`.
	*/
	readonly name: string;

	/**
	An array of files that will be searched for a common parent directory. This common parent directory will be used in lieu of the `cwd` option below.
	*/
	readonly files?: string[];

	/**
	The directory to start searching for a `package.json` from.

	@default process.cwd()
	*/
	readonly cwd?: string;

	/**
	Create the directory synchronously before returning.

	@default false
	*/
	readonly create?: boolean;
};

/**
Finds the cache directory using the given options.

The algorithm checks for the `CACHE_DIR` environmental variable and uses it if it is not set to `true`, `false`, `1` or `0`. If one is not found, it tries to find a `package.json` file, searching every parent directory of the `cwd` specified (or implied from other options). It returns a `string` containing the absolute path to the cache directory, or `undefined` if `package.json` was never found or if the `node_modules` directory is unwritable.

@example
```
import findCacheDirectory from 'find-cache-dir';

findCacheDirectory({name: 'unicorns'});
//=> '/user/path/node-modules/.cache/unicorns'
```
*/
export default function findCacheDirectory(options: Options): string | undefined;