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- // 26.1.13 Reflect.set(target, propertyKey, V [, receiver])
- var dP = require('./_object-dp')
- , gOPD = require('./_object-gopd')
- , getPrototypeOf = require('./_object-gpo')
- , has = require('./_has')
- , $export = require('./_export')
- , createDesc = require('./_property-desc')
- , anObject = require('./_an-object')
- , isObject = require('./_is-object');
- function set(target, propertyKey, V/*, receiver*/){
- var receiver = arguments.length < 4 ? target : arguments[3]
- , ownDesc = gOPD.f(anObject(target), propertyKey)
- , existingDescriptor, proto;
- if(!ownDesc){
- if(isObject(proto = getPrototypeOf(target))){
- return set(proto, propertyKey, V, receiver);
- }
- ownDesc = createDesc(0);
- }
- if(has(ownDesc, 'value')){
- if(ownDesc.writable === false || !isObject(receiver))return false;
- existingDescriptor = gOPD.f(receiver, propertyKey) || createDesc(0);
- existingDescriptor.value = V;
- dP.f(receiver, propertyKey, existingDescriptor);
- return true;
- }
- return ownDesc.set === undefined ? false : (ownDesc.set.call(receiver, V), true);
- }
- $export($export.S, 'Reflect', {set: set});
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