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15 lines
750 B
JavaScript
15 lines
750 B
JavaScript
var metadata = require('./_metadata')
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, anObject = require('./_an-object')
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, toMetaKey = metadata.key
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, getOrCreateMetadataMap = metadata.map
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, 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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, 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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}}); |