@charmr/oauth-button-web/dist/src/utils/isProvider.js

A lightweight, framework-agnostic OAuth login button as a custom Web Component. Easily drop it into any HTML, React, Angular, or Vue project.

import { providers } from '@charmr/oauth-core';
/**
 * validates dynamic input as a known provider (e.g. 'google').
 * narrows to ProviderType if true...
 */
export function isProvider(val) {
    return typeof val === 'string' && providers.includes(val);
}