Advanced TypeScript Programming Projects

Chapter 1

1. Using union types, we can write a method that accepts either the FahrenheitToCelsius class or the CelsiusToFahrenheit class:

class Converter {    Convert(temperature : number, converter : FahrenheitToCelsius | CelsiusToFahrenheit) : number {        return converter.Convert(temperature);    }}let converter = new Converter();console.log(converter.Convert(32, new CelsiusToFahrenheit()));

2. To accept a key/value pair, we need to use a map. Adding our records to it would look something like this:

class Commands {    private commands = new Map<string, Command>();    public Add(...commands : Command[]) {        commands.forEach(command => {            this.Add(command);        })    }    public Add(command : Command) {        this.commands.set(command.Name, command);    }}let command = new Commands(); ...