// TODO: Remove from `core-js@4`
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var $ = require('../internals/export');
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var uncurryThis = require('../internals/function-uncurry-this');
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var ReflectMetadataModule = require('../internals/reflect-metadata');
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var anObject = require('../internals/an-object');
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var getPrototypeOf = require('../internals/object-get-prototype-of');
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var $arrayUniqueBy = require('../internals/array-unique-by');
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var arrayUniqueBy = uncurryThis($arrayUniqueBy);
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var concat = uncurryThis([].concat);
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var ordinaryOwnMetadataKeys = ReflectMetadataModule.keys;
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var toMetadataKey = ReflectMetadataModule.toKey;
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var ordinaryMetadataKeys = function (O, P) {
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var oKeys = ordinaryOwnMetadataKeys(O, P);
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var parent = getPrototypeOf(O);
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if (parent === null) return oKeys;
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var pKeys = ordinaryMetadataKeys(parent, P);
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return pKeys.length ? oKeys.length ? arrayUniqueBy(concat(oKeys, pKeys)) : pKeys : oKeys;
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};
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// `Reflect.getMetadataKeys` method
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// https://github.com/rbuckton/reflect-metadata
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$({ target: 'Reflect', stat: true }, {
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getMetadataKeys: function getMetadataKeys(target /* , targetKey */) {
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var targetKey = arguments.length < 2 ? undefined : toMetadataKey(arguments[1]);
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return ordinaryMetadataKeys(anObject(target), targetKey);
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}
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});
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