var metadata = require('./_metadata');
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var anObject = require('./_an-object');
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var toMetaKey = metadata.key;
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var getOrCreateMetadataMap = metadata.map;
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var store = metadata.store;
|
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metadata.exp({ deleteMetadata: function deleteMetadata(metadataKey, target /* , targetKey */) {
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var targetKey = arguments.length < 3 ? undefined : toMetaKey(arguments[2]);
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var metadataMap = getOrCreateMetadataMap(anObject(target), targetKey, false);
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if (metadataMap === undefined || !metadataMap['delete'](metadataKey)) return false;
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if (metadataMap.size) return true;
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var targetMetadata = store.get(target);
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targetMetadata['delete'](targetKey);
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return !!targetMetadata.size || store['delete'](target);
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} });
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