@emailjs/browser/es/utils/validateParams/validateParams.js

Official EmailJS SDK for browsers

export const validateParams = (publicKey, serviceID, templateID) => {
    if (!publicKey || typeof publicKey !== 'string') {
        throw 'The public key is required. Visit https://dashboard.emailjs.com/admin/account';
    }
    if (!serviceID || typeof serviceID !== 'string') {
        throw 'The service ID is required. Visit https://dashboard.emailjs.com/admin';
    }
    if (!templateID || typeof templateID !== 'string') {
        throw 'The template ID is required. Visit https://dashboard.emailjs.com/admin/templates';
    }
};