P.some in user-land

[astahmer]

since P.array = .every(xxx) -> will match if all elements in the input array match this sub-pattern.)

I was a bit surprised there was no built-in P.some, so here it is

import { P, isMatching } from "ts-pattern";

export const somePattern = <T, P extends P.Pattern<T>>(pattern: P) => {
    const match = isMatching(pattern);
    return P.when((value: T[]): value is T[] => Array.isArray(value) && value.some(match));
};