Logger

import { VendureLogger } from '@vendure/core';import fs from 'fs';// A simple custom logger which writes all logs to a file.export class SimpleFileLogger implements VendureLogger {    private logfile: fs.WriteStream;    constructor(logfileLocation: string) {        this.logfile = fs.createWriteStream(logfileLocation, { flags: 'w' });    }    error(message: string, context?: string) {        this.logfile.write(`ERROR: [${context}] ${message}\n`);    }    warn(message: string, context?: string) {        this.logfile.write(`WARN: [${context}] ${message}\n`);    }    info(message: string, context?: string) {        this.logfile.write(`INFO: [${context}] ${message}\n`);    }    verbose(message: string, context?: string) {        this.logfile.write(`VERBOSE: [${context}] ${message}\n`);    }    debug(message: string, context?: string) {        this.logfile.write(`DEBUG: [${context}] ${message}\n`);    }}// in the VendureConfigexport const config = {    // ...    logger: new SimpleFileLogger('server.log'),}

class Logger implements LoggerService {    logger: VendureLogger    error(message: string, context?: string, trace?: string) => void;    warn(message: string, context?: string) => void;    info(message: string, context?: string) => void;    verbose(message: string, context?: string) => void;    debug(message: string, context?: string) => void;}