与泛型函数一起使用的接口的默认值

interface Processor<T> {
    data: T;
    process(input: T): T;
    log(message: string): void; // 默认方法
}

// 为log方法提供默认实现
Processor.prototype.log = function (message: string) {
    console.log(`[${new Date().toISOString()}] ${message}`);
};

class StringProcessor implements Processor<string> {
    data: string;

    constructor(data: string) {
        this.data = data;
    }

    process(input: string): string {
        return input.toUpperCase();
    }
}

class NumberProcessor implements Processor<number> {
    data: number;

    constructor(data: number) {
        this.data = data;
    }

    process(input: number): number {
        return input * 2;
    }
}

const strProc = new StringProcessor("hello");
console.log(strProc.process("world")); // HELLO world
strProc.log("String processing complete"); // [当前时间] String processing complete

const numProc = new NumberProcessor(5);
console.log(numProc.process(10)); // 20
numProc.log("Number processing complete"); // [当前时间] Number processing complete