1 files changed, 52 insertions, 0 deletions
diff --git a/node_modules/get-package-type/async.cjs b/node_modules/get-package-type/async.cjs
new file mode 100644
index 0000000..fa7fd5c
--- /dev/null
+++ b/node_modules/get-package-type/async.cjs
@@ -0,0 +1,52 @@
+'use strict';
+
+const path = require('path');
+const {promisify} = require('util');
+const readFile = promisify(require('fs').readFile);
+
+const isNodeModules = require('./is-node-modules.cjs');
+const resultsCache = require('./cache.cjs');
+
+const promiseCache = new Map();
+
+async function getDirectoryTypeActual(directory) {
+	if (isNodeModules(directory)) {
+		return 'commonjs';
+	}
+
+	try {
+		return JSON.parse(await readFile(path.resolve(directory, 'package.json'))).type || 'commonjs';
+	} catch (_) {
+	}
+
+	const parent = path.dirname(directory);
+	if (parent === directory) {
+		return 'commonjs';
+	}
+
+	return getDirectoryType(parent);
+}
+
+async function getDirectoryType(directory) {
+	if (resultsCache.has(directory)) {
+		return resultsCache.get(directory);
+	}
+
+	if (promiseCache.has(directory)) {
+		return promiseCache.get(directory);
+	}
+
+	const promise = getDirectoryTypeActual(directory);
+	promiseCache.set(directory, promise);
+	const result = await promise;
+	resultsCache.set(directory, result);
+	promiseCache.delete(directory);
+
+	return result;
+}
+
+function getPackageType(filename) {
+	return getDirectoryType(path.resolve(path.dirname(filename)));
+}
+
+module.exports = getPackageType;