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node_modules/clean-css/lib/utils/override.js 729 Bytes
aaac7fed   liuqimichale   add
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  function override(source1, source2) {
    var target = {};
    var key1;
    var key2;
    var item;
  
    for (key1 in source1) {
      item = source1[key1];
  
      if (Array.isArray(item)) {
        target[key1] = item.slice(0);
      } else if (typeof item == 'object' && item !== null) {
        target[key1] = override(item, {});
      } else {
        target[key1] = item;
      }
    }
  
    for (key2 in source2) {
      item = source2[key2];
  
      if (key2 in target && Array.isArray(item)) {
        target[key2] = item.slice(0);
      } else if (key2 in target && typeof item == 'object' && item !== null) {
        target[key2] = override(target[key2], item);
      } else {
        target[key2] = item;
      }
    }
  
    return target;
  }
  
  module.exports = override;