code: function resolvePath(filepath) {
    filepath = filepath.replace(RE_TRAILING, '');
    const cwd = process.cwd();
    const npmPackage = filepath.includes('node_modules');
  
    // Find nearest node_modules directory
    if (npmPackage) {
      const parts = filepath.split(path.sep);
      let idx = parts.lastIndexOf('node_modules');
  
      if (idx < parts.length - 1) idx += 2;
      // Handle scoped
      if (parts[idx - 1].charAt(0) == '@') idx++;
  
      const dir = parts.slice(0, idx).join(path.sep);
  
      // Installed packages must have manifest, otherwise continue
      if (exists(path.join(dir, 'package.json'))) return dir;
    }
  
    // Find nearest directory with node_modules subdirectory
    if (filepath.includes(cwd)) {
      let depth = maxFileSystemDepth;
      let dir = filepath;
      let parent = '';
  
      while (true) {
        parent = path.dirname(dir);
        // Stop if we hit max file system depth or root
        // Convert to lowercase to fix problems on Windows
        if (!--depth || parent.toLowerCase() === dir.toLowerCase()) {
          break;
        }
  
        // Stop at nearest directory with node_modules or cwd
        if (dir == cwd || exists(path.resolve(dir, 'node_modules'))) return dir;
  
        // Walk
        dir = parent;
      }
    }
  
    // Return project directory if file isn't a project file
    return cwd;
  }
docs: Resolve package path from 'filepath'
  @param {String} filepath
  @returns {String}