.

node_modules/find-up/index.js

@@ -0,0 +1,46 @@
+'use strict';
+const path = require('path');
+const locatePath = require('locate-path');
+
+module.exports = (filename, opts = {}) => {
+	const startDir = path.resolve(opts.cwd || '');
+	const {root} = path.parse(startDir);
+
+	const filenames = [].concat(filename);
+
+	return new Promise(resolve => {
+		(function find(dir) {
+			locatePath(filenames, {cwd: dir}).then(file => {
+				if (file) {
+					resolve(path.join(dir, file));
+				} else if (dir === root) {
+					resolve(null);
+				} else {
+					find(path.dirname(dir));
+				}
+			});
+		})(startDir);
+	});
+};
+
+module.exports.sync = (filename, opts = {}) => {
+	let dir = path.resolve(opts.cwd || '');
+	const {root} = path.parse(dir);
+
+	const filenames = [].concat(filename);
+
+	// eslint-disable-next-line no-constant-condition
+	while (true) {
+		const file = locatePath.sync(filenames, {cwd: dir});
+
+		if (file) {
+			return path.join(dir, file);
+		}
+
+		if (dir === root) {
+			return null;
+		}
+
+		dir = path.dirname(dir);
+	}
+};