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- 'use strict';
- const path = require('path');
- const locatePath = require('locate-path');
- module.exports = (filename, opts) => {
- opts = opts || {};
- const startDir = path.resolve(opts.cwd || '');
- const root = path.parse(startDir).root;
- 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) => {
- opts = opts || {};
- let dir = path.resolve(opts.cwd || '');
- const root = path.parse(dir).root;
- const filenames = [].concat(filename);
-
- while (true) {
- const file = locatePath.sync(filenames, {cwd: dir});
- if (file) {
- return path.join(dir, file);
- } else if (dir === root) {
- return null;
- }
- dir = path.dirname(dir);
- }
- };
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