This is just a demo how you can use the Grammarly API.
Refer to api-docs.md or just use DevTools on Firefox (can't see cookies on Chrome).
The cookies are obtain from GET https://grammarly.com/.
Usage:
(async function () {
try {
const g = new Grammarly();
await g.init();
g.check("helloworld");
} catch (error) {
console.log(error);
}
})();