njseries_01_05.js

constructor(config = {}){
    const defaultConfig = {
        env: 'dev',
        port: 3000,
        templates: './templates'
    }
    this.config = Object.assign(defaultConfig, config)

    this._httpServer = http.createServer(this._handleRequest.bind(this))
    this.router = new Router()
    this.templater = new Templater(
        this.config.templates, 
        this.config.env.toLowerCase().startsWith('prod')
    )
}