import { isFreeEmail } from "@visulima/free-email-domains";

const email = "user@gmail.com";

if (isFreeEmail(email)) {
    console.log("Free email provider detected");
} else {
    console.log("Custom/corporate email");
}

import domains from "@visulima/free-email-domains/domains" with { type: "json" };

console.log(domains);
// ["gmail.com", "outlook.com", "yahoo.com", ...]

import { isFreeEmail } from "@visulima/free-email-domains";

function requireBusinessEmail(email: string): boolean {
    // Check format
    if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
        return false;
    }

    // Reject free providers — require a corporate domain
    if (isFreeEmail(email)) {
        return false;
    }

    return true;
}