function clbk( error, tree ) {
		if ( error ) {
			t.ok( false, error.message );
		}
		t.equal( isObject( tree ), true, 'returns an object' );
		t.equal( isEmptyObject( tree ), true, 'returns an empty object' );
		t.end();
	}
/package.json'
	};
	pkgTree( opts, clbk );
	function clbk( error, tree ) {
		if ( error ) {
			t.ok( false, error.message );
		}
		t.equal( isObject( tree ), true, 'returns an object' );
		t.end();
	}
});

tape( 'the function returns an empty object if unable to resolve any packages (ignore option)', function test( t ) {
	var opts = {
		'dir': './@stdlib/math/base',
		'ignore': [
			'*