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ashwinkumar2438/reject.js

Created February 21, 2022 04:08
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reject.js
class PromiseCopy{
static reject( reason ){
// We return a new Promise and pass the reason to reject method if Promise.reject is called directly.
if( !( this instanceof PromiseCopy ) ) return new PromiseCopy( ( _ , rej ) => rej( reason ) ) ;
//return if promise is settled.
if( this.#state !== states.pending )return ;
this.#state = states.rejected ;
this.#result = reason ;
this.#dispatchCallbacks();
}
#dispatchCallbacks(){ /* */ } ;
}
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