core-js/modules/es7.reflect.get-own-metadata.js

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

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