Construí lo que quieras

const response = await fetch(
  "https://api.lapyme.com.ar/api/v1/sales",
  {
    method: "POST",
    headers: {
      "Authorization": "Bearer tu_api_key",
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      customerId: "cust_123",
      items: [
        { productId: "prod_456", quantity: 2 }
      ],
      paymentMethodId: "pm_efectivo"
    })
  }
);

const response = await fetch(
  "https://api.lapyme.com.ar/api/v1/products",
  {
    headers: {
      "Authorization": "Bearer tu_api_key"
    }
  }
);

const { data: products } = await response.json();

// Cada producto incluye stock, precios,
// categoría, y más

// Stock por depósito
const stock = await fetch(
  "https://api.lapyme.com.ar/api/v1/stock-per-warehouse",
  { headers: { "Authorization": "Bearer tu_api_key" } }
);

// Transferencia entre depósitos
await fetch(
  "https://api.lapyme.com.ar/api/v1/transfers",
  {
    method: "POST",
    headers: { "Authorization": "Bearer tu_api_key" },
    body: JSON.stringify({
      productId: "prod_456",
      fromWarehouseId: "wh_1",
      toWarehouseId: "wh_2",
      quantity: 10
    })
  }
);

await fetch(
  "https://api.lapyme.com.ar/api/v1/customers",
  {
    method: "POST",
    headers: {
      "Authorization": "Bearer tu_api_key",
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      name: "Juan Pérez",
      cuit: "20-12345678-9",
      taxCategory: "responsable_inscripto",
      email: "juan@empresa.com"
    })
  }
);