About possible wrong returned value while 'Promise.resolve'

[FANGZHANG34]

I wrote some codes like here:

const RealStory = new class RealStory{
	/**@type {RealStory[]} */
	static pages = [];
	static isClearing = false;
	static intervalId = setInterval(()=>(RealStory.isClearing || (
		RealStory.isClearing = true,RealStory.pages[0].clear().then(()=>RealStory.isClearing = false)
	)),50);
	static promise = class StoryPromise{
		/**
		 * 
		 * @this {StoryPromise}
		 * @param {(value)=>void} resolve 
		 * @param {(reason?)=>void} reject 
		 */
		static executor(resolve,reject){this.resolve = resolve,this.reject = reject;}
		/**@type {(value)=>void} */
		resolve;
		/**@type {(reason?)=>void} */
		reject;
		self = new Promise(StoryPromise.executor.bind(this));
	};
	newPage(){return new RealStory(this);}
	newPagePromise(){return Promise.resolve([new RealStory(this)]);}
	/**
	 * 
	 * @param {()=>*} fn 
	 */
	then(fn){return typeof fn === 'function' && this.fnList.unshift(fn),this;}
	getNextPage(){
		const temp = this.ofStory.pages;
		return temp[temp.indexOf(this) + 1];
	}
	getPreviousPage(){
		const temp = this.ofStory.pages;
		return temp[temp.indexOf(this) - 1];
	}
	newPromiseObj(){
		const temp = new RealStory.promise;
		return this.then(()=>temp.self),temp;
	}
	async clear(){
		var i = 0,temp = this;
		while(RealStory !== temp) temp = temp.ofStory,i++;
		while(this.pages.length || this.fnList.length){
			while(this.fnList.length) try{await this.fnList.pop()?.();}catch(e){console.error('Depth of the fn : '+i);console.error(e);}
			try{await this.pages.shift()?.clear?.();}catch(e){console.error('Depth of the page : '+i);console.error(e);}
		}
	}
	/**@type {RealStory} */
	ofStory;
	/**@type {RealStory[]} */
	pages = [];
	/**@type {(()=>*)[]} */
	fnList = [];
	constructor(ofStory){(this.ofStory = ofStory instanceof RealStory ? ofStory : RealStory).pages.push(this);}
}();

But when I wanted await RealStory, I got undefined unexpectedly.
Is here anybody to told me a possible reason? Thank you!

[Josh-Cena]

This looks like a general programming question, not a problem with our content. Please ask in an open Q&A forum such as stack overflow instead.