@vulog/aima-promocode/src/submitReferral.ts

```bash npm i @vulog/aima-client @vulog/aima-promocode ```

import { Client } from '@vulog/aima-client';
import { z } from 'zod';

const schema = z.object({
    userId: z.string().uuid(),
    entityId: z.string().uuid(),
    code: z.string().min(1),
});

export const submitReferral = async (client: Client, userId: string, entityId: string, code: string): Promise<void> => {
    const result = schema.safeParse({ userId, entityId, code });
    if (!result.success) {
        throw new TypeError('Invalid args', {
            cause: result.error.issues,
        });
    }

    await client.post(
        `boapi/proxy/user/fleets/${client.clientOptions.fleetId}/invitation/users/${userId}/entity/${entityId}/redeem/${code}`
    );
};