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28 lines
1.2 KiB
28 lines
1.2 KiB
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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