Function walk

src/index.js:269–275

(exports, includeDefault)

}

function walk(exports, includeDefault) {
	if (!exports) return null;
	if (typeof exports === 'string') return exports;
	let p = exports['.'] || exports.import || exports.module;
	if (!p && includeDefault) p = exports.default;
	return walk(p, includeDefault);
}

function getMain({ options, entry, format }) {
	const { pkg } = options;