/**
Get the path of the parent module.
@param filePath - File path of the module of which to get the parent path.
Useful if you want it to work [multiple module levels down](https://github.com/sindresorhus/parent-module/tree/master/fixtures/filepath).
Default: [`__filename`](https://nodejs.org/api/globals.html#globals_filename)
@example
```
// bar.ts
const parentModule = require('parent-module');
export default () => {
console.log(parentModule());
//=> '/Users/sindresorhus/dev/unicorn/foo.ts'
};
// foo.ts
import bar from './bar';
bar();
```
*/
declare function parentModule(filePath?: string): string | undefined;
export = parentModule;
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