@vulog/aima-promocode/src/submitPromoCode.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 submitPromoCode = async (
    client: Client,
    userId: string,
    entityId: string,
    code: string
): Promise<string> => {
    const result = schema.safeParse({ userId, entityId, code });
    if (!result.success) {
        throw new TypeError('Invalid args', {
            cause: result.error.issues,
        });
    }

    return client
        .put<string>(`boapi/proxy/user/billing/fleets/${client.clientOptions.fleetId}/promoCodes/redeem/${code}`, {
            userId,
            entityId,
        })
        .then(({ data }) => data);
};