| 12345678910111213141516171819202122 | // Part of Logger//var Writer = class Writer {	constructor(opt) {		if(opt) {			this.fmt = opt.format;		}		this.count = 0;		this.lastTime = new Date();	}	doLog(msg) {		this.count++;		this.lastTime = new Date();		this.log(msg);	}	log(msg) {		throw Error("Not implemented");	}}module.exports = Writer;
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