Edit File: es7.reflect.delete-metadata.js
var metadata = require('./_metadata'); var anObject = require('./_an-object'); var toMetaKey = metadata.key; var getOrCreateMetadataMap = metadata.map; var store = metadata.store; metadata.exp({ deleteMetadata: function deleteMetadata(metadataKey, target /* , targetKey */) { var targetKey = arguments.length < 3 ? undefined : toMetaKey(arguments[2]); var metadataMap = getOrCreateMetadataMap(anObject(target), targetKey, false); if (metadataMap === undefined || !metadataMap['delete'](metadataKey)) return false; if (metadataMap.size) return true; var targetMetadata = store.get(target); targetMetadata['delete'](targetKey); return !!targetMetadata.size || store['delete'](target); } });
Back to File Manager