首页 \ 问答 \ 如何正确地注释可以接受Component或string作为html标签的组件道具?(How to correctly annotate component props that can accept Component or string as html tag?)

如何正确地注释可以接受Component或string作为html标签的组件道具?(How to correctly annotate component props that can accept Component or string as html tag?)

如何正确注释接受Component或string作为html标记的组件道具?

例如,我有一个可以采用自定义组件的组件(包括像divp等html标签)。 它是这样写的:

interface MyComponentProps<T> {
    comp: React.ComponentType<T>
}

function MyComponent<T>({ comp: Component }: MyComponentProps<T>) {
  return <Component />
}

如果我将另一个组件作为comp道具传递给MyComponent那么Typescript不会抱怨:

function Wrapper() {
    return <div />
}

function render() {
    return <MyComponent comp={Wrapper} />
}

但是,当我通过这样的标准html标签时:

function render() {
  return <MyComponent comp="div"/>
}

打字稿编译器投诉:

Type '{ comp: "div"; }' is not assignable to type 'IntrinsicAttributes & MyComponentProps<{}>'.
  Type '{ comp: "div"; }' is not assignable to type 'MyComponentProps<{}>'.
    Types of property 'comp' are incompatible.
      Type '"div"' is not assignable to type 'ComponentType<{}>'.

那么,如何在不使用any类型的情况下注释像MyComponent这样的组件?


How to correctly annotate component props that accept Component or string as html tag?

For example, I have a component that can take custom Component (includes html tag like div, p etc.). It's written like this:

interface MyComponentProps<T> {
    comp: React.ComponentType<T>
}

function MyComponent<T>({ comp: Component }: MyComponentProps<T>) {
  return <Component />
}

Typescript doesn't complaint if I pass another component as comp props to MyComponent like this:

function Wrapper() {
    return <div />
}

function render() {
    return <MyComponent comp={Wrapper} />
}

But, when I pass standard html tag like this:

function render() {
  return <MyComponent comp="div"/>
}

typescript compiler complaints:

Type '{ comp: "div"; }' is not assignable to type 'IntrinsicAttributes & MyComponentProps<{}>'.
  Type '{ comp: "div"; }' is not assignable to type 'MyComponentProps<{}>'.
    Types of property 'comp' are incompatible.
      Type '"div"' is not assignable to type 'ComponentType<{}>'.

So, how can I annotate a component like MyComponent without using any type?


原文:https://stackoverflow.com/questions/46072333
更新时间:2023-06-21 08:06

最满意答案

似乎你可能忽略了错误。 对我来说,这条线

y <- dgamma(x, shape = 3, rate = 1/29, scale = 1/rate, log = FALSE)

给出错误

dgamma中的错误(length(x),shape = 3,rate = 1/29,scale = 1 / rate,log = FALSE):未找到对象'rate'

所以你的y变量永远不会被设置。 您必须从其他一些与x不同长度的代码中剩下一个。 通过查看length(x)和长度(y),您应该在绘图之前进行检查。 使用

y <- dgamma(x, shape = 3, rate = 1/29, log = FALSE)

代替。 这将使用您想要的rate的默认值。 也许你正在查看函数的默认参数值? 当您调用某个函数时,您无法在为参数传递值时指定其他参数的名称,您只能在定义函数时执行此操作。

你的plot()命令也会返回一个错误。 参数名称是xlab=ylab=而不是xlabel=ylabel=


Seems like you are probably ignoring errors. For me, the line

y <- dgamma(x, shape = 3, rate = 1/29, scale = 1/rate, log = FALSE)

gives the error

Error in dgamma(length(x), shape = 3, rate = 1/29, scale = 1/rate, log = FALSE) : object 'rate' not found

so your y variable is never set. You must have a left over one from some other code that is a different length than x. You should check before plotting by looking at length(x) and `length(y). Use

y <- dgamma(x, shape = 3, rate = 1/29, log = FALSE)

instead. This will use the default value for rate which is what you want. Maybe you were looking at the default parameter values for the function? You can't specify names of other parameters when passing values for a parameter when you call a function, you can only do this when you define a function.

Also your plot() command returns an error. The parameter names are xlab= and ylab= and not xlabel= and ylabel=

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