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18 lines
761 B
JavaScript
18 lines
761 B
JavaScript
5 years ago
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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 ordinaryGetOwnMetadata = metadata.get;
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var toMetaKey = metadata.key;
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var ordinaryGetMetadata = function (MetadataKey, O, P) {
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var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P);
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if (hasOwn) return ordinaryGetOwnMetadata(MetadataKey, O, P);
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var parent = getPrototypeOf(O);
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return parent !== null ? ordinaryGetMetadata(MetadataKey, parent, P) : undefined;
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};
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metadata.exp({ getMetadata: function getMetadata(metadataKey, target /* , targetKey */) {
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return ordinaryGetMetadata(metadataKey, anObject(target), arguments.length < 3 ? undefined : toMetaKey(arguments[2]));
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} });
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