19 lines
861 B
JavaScript
19 lines
861 B
JavaScript
var Set = require('./es6.set')
|
|
, from = require('./_array-from-iterable')
|
|
, metadata = require('./_metadata')
|
|
, anObject = require('./_an-object')
|
|
, getPrototypeOf = require('./_object-gpo')
|
|
, ordinaryOwnMetadataKeys = metadata.keys
|
|
, toMetaKey = metadata.key;
|
|
|
|
var ordinaryMetadataKeys = function(O, P){
|
|
var oKeys = ordinaryOwnMetadataKeys(O, P)
|
|
, parent = getPrototypeOf(O);
|
|
if(parent === null)return oKeys;
|
|
var pKeys = ordinaryMetadataKeys(parent, P);
|
|
return pKeys.length ? oKeys.length ? from(new Set(oKeys.concat(pKeys))) : pKeys : oKeys;
|
|
};
|
|
|
|
metadata.exp({getMetadataKeys: function getMetadataKeys(target /*, targetKey */){
|
|
return ordinaryMetadataKeys(anObject(target), arguments.length < 2 ? undefined : toMetaKey(arguments[1]));
|
|
}}); |