Typescript: Argument of type 'RegExpMatchArray' is not assignable to parameter of type 'string'
@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.
Kushagra Sharma
Updated on June 16, 2022Comments
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Kushagra Sharma about 2 years
I have the following expression:
import { persistState } from 'redux-devtools'; const enhancer = compose( applyMiddleware(thunk, router, logger), DevTools.instrument(), persistState( window.location.href.match(/[?&]debug_session=([^&]+)\b/) ) );
I get a swiggly on the argument to match function with the following error
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)
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. */
As I see it, the argument is of type RegExp and so is the parameter in the definition. Then why the error?