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node_modules/commondir/index.js 802 Bytes
aaac7fed   liuqimichale   add
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  var path = require('path');
  
  module.exports = function (basedir, relfiles) {
      if (relfiles) {
          var files = relfiles.map(function (r) {
              return path.resolve(basedir, r);
          });
      }
      else {
          var files = basedir;
      }
      
      var res = files.slice(1).reduce(function (ps, file) {
          if (!file.match(/^([A-Za-z]:)?\/|\\/)) {
              throw new Error('relative path without a basedir');
          }
          
          var xs = file.split(/\/+|\\+/);
          for (
              var i = 0;
              ps[i] === xs[i] && i < Math.min(ps.length, xs.length);
              i++
          );
          return ps.slice(0, i);
      }, files[0].split(/\/+|\\+/));
      
      // Windows correctly handles paths with forward-slashes
      return res.length > 1 ? res.join('/') : '/'
  };