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16 lines
677 B
16 lines
677 B
var metadata = require('./_metadata'); |
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var anObject = require('./_an-object'); |
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var getPrototypeOf = require('./_object-gpo'); |
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var ordinaryHasOwnMetadata = metadata.has; |
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var toMetaKey = metadata.key; |
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var ordinaryHasMetadata = function (MetadataKey, O, P) { |
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var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P); |
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if (hasOwn) return true; |
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var parent = getPrototypeOf(O); |
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return parent !== null ? ordinaryHasMetadata(MetadataKey, parent, P) : false; |
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}; |
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metadata.exp({ hasMetadata: function hasMetadata(metadataKey, target /* , targetKey */) { |
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return ordinaryHasMetadata(metadataKey, anObject(target), arguments.length < 3 ? undefined : toMetaKey(arguments[2])); |
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} });
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