打字稿:"RegExpMatchArray"类型的参数无法分配给“字符串"类型的参数 [英] Typescript: Argument of type 'RegExpMatchArray' is not assignable to parameter of type 'string'

问题描述

我有以下表达式:

import { persistState } from 'redux-devtools';

const enhancer = compose(
  applyMiddleware(thunk, router, logger),
  DevTools.instrument(),
  persistState(
    window.location.href.match(/[?&]debug_session=([^&]+)\b/)
  )
);

我在参数匹配上出现了混乱，并出现以下错误

I get a swiggly on the argument to match function with the following error

"RegExpMatchArray"类型的参数无法分配给的参数 输入字符串".将字符串与正则表达式匹配，然后返回 包含该搜索结果的数组. (方法) String.match(regexp:RegExp):RegExpMatchArray(+1重载)

Argument of type 'RegExpMatchArray' is not assignable to parameter of type 'string'. Matches a string with a regular expression, and returns an array containing the results of that search. (method) String.match(regexp: RegExp): RegExpMatchArray (+1 overload)

VSCode中的偷看定义显示:

The peek definition in VSCode shows:

match(regexp: string): RegExpMatchArray;
/**
  * Matches a string with a regular expression, and returns an array containing the results of that search.
  * @param regexp A regular expression object that contains the regular expression pattern and applicable flags.
  */
match(regexp: RegExp): RegExpMatchArray;

/**
  * Replaces text in a string, using a regular expression or search string.
  * @param searchValue A string that represents the regular expression.
  * @param replaceValue A string containing the text to replace for every successful match of searchValue in this string.
  */

如我所见，参数的类型为RegExp，定义中的参数也是如此.那为什么会出错呢?

As I see it, the argument is of type RegExp and so is the parameter in the definition. Then why the error?

推荐答案

@NitzanTomer是正确的.类型不匹配的不是匹配功能参数.您当然可以尝试将match函数的返回值存储在字符串型变量中/从:string函数返回它/将其作为string参数传递.

@NitzanTomer is right. It's not the match functions parameter that has a type mismatch. You certainly try to store the return value of the match function in a string typed variable / return it from a :string function / pass it as a string parameter.

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