tennotv/public/js/flakeid.min.js

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(function(global,factory){typeof exports==="object"&&typeof module!=="undefined"?module.exports=factory():typeof define==="function"&&define.amd?define(factory):global.FlakeId=factory()})(this,function(){"use strict";function add(x,y,base){var z=[];var n=Math.max(x.length,y.length);var carry=0;var i=0;while(i<n||carry){var xi=i<x.length?x[i]:0;var yi=i<y.length?y[i]:0;var zi=carry+xi+yi;z.push(zi%base);carry=Math.floor(zi/base);i++}return z}function multiplyByNumber(num,x,base){if(num<0)return null;if(num==0)return[];var result=[];var power=x;while(true){if(num&1){result=add(result,power,base)}num=num>>1;if(num===0)break;power=add(power,power,base)}return result}function parseToDigitsArray(str,base){var digits=str.split("");var ary=[];for(var i=digits.length-1;i>=0;i--){var n=parseInt(digits[i],base);if(isNaN(n))return null;ary.push(n)}return ary}function convertBase(str,fromBase,toBase){var digits=parseToDigitsArray(str,fromBase);if(digits===null)return null;var outArray=[];var power=[1];for(var i=0;i<digits.length;i++){if(digits[i]){outArray=add(outArray,multiplyByNumber(digits[i],power,toBase),toBase)}power=multiplyByNumber(fromBase,power,toBase)}var out="";for(var i=outArray.length-1;i>=0;i--){out+=outArray[i].toString(toBase)}return out}function hexToDec(hexStr){if(hexStr.substring(0,2)==="0x")hexStr=hexStr.substring(2);hexStr=hexStr.toLowerCase();return convertBase(hexStr,16,10)}var classCallCheck=function(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError("Cannot call a class as a function")}};var createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if("value"in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();var FlakeId=function(){function FlakeId(options){classCallCheck(this,FlakeId);options=options||{};this.seq=0;this.mid=(options.mid||1)%1023;this.timeOffset=options.timeOffset||0;this.lastTime=0}createClass(FlakeId,[{key:"gen",value:function gen(){var time=Date.now(),bTime=(time-this.timeOffset).toString(2);if(this.lastTime==time){this.seq++;if(this.seq>4095){this.seq=0}}else{this.seq=0}this.lastTime=time;var bSeq=this.seq.toString(2),bMid=this.mid.toString(2);while(bSeq.length<12){bSeq="0"+bSeq}while(bMid.length<10){bMid="0"+bMid}var bid=bTime+bMid+bSeq;var id="";for(var i=bid.length;i>=0;i-=4){id=parseInt(bid.substring(i-4,i),2).toString(16)+id}return hexToDec(id)}}]);return FlakeId}();return FlakeId});