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请问一下 typescript 可以做到 限定传入的参数为几个常量中的一个?

请问一下 typescript 可以做到 限定传入的参数为几个常量中的一个?
比如希望传入的参数size是'L','M','S'中的一个


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by (71.8m points)

建议用枚举来描述

enum SizeType {
    L = 'Large',
    M = 'Medium',
    S = 'Small'
}

class Demo {

    public getSize(size: SizeType): void {
        console.log(size);
    }

}

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