基于typescript中的构造函数参数重载类属性

class MyClass {
    private value: number;
    private name: string;

    // 构造函数重载签名
    constructor();
    constructor(value: number);
    constructor(name: string);
    constructor(valueOrName?: number | string) {
        if (typeof valueOrName === 'number') {
            this.value = valueOrName;
            this.name = 'defaultName';
        } else if (typeof valueOrName === 'string') {
            this.value = 0;
            this.name = valueOrName;
        } else {
            this.value = 0;
            this.name = 'defaultName';
        }
    }

    public getValue(): number {
        return this.value;
    }

    public getName(): string {
        return this.name;
    }
}

// 使用示例
const instance1 = new MyClass(); // value = 0, name = 'defaultName'
const instance2 = new MyClass(42); // value = 42, name = 'defaultName'
const instance3 = new MyClass('customName'); // value = 0, name = 'customName'