node_modules/jszip/node_modules/core-js/library/modules/es7.reflect.get-own-metadata.js

var metadata               = require('./_metadata')
  , anObject               = require('./_an-object')
  , ordinaryGetOwnMetadata = metadata.get
  , toMetaKey              = metadata.key;

metadata.exp({getOwnMetadata: function getOwnMetadata(metadataKey, target /*, targetKey */){
  return ordinaryGetOwnMetadata(metadataKey, anObject(target)
    , arguments.length < 3 ? undefined : toMetaKey(arguments[2]));
}});