# `LatticeStripe.Balance.SourceTypes`
[🔗](https://github.com/szTheory/lattice_stripe/blob/v1.1.0/lib/lattice_stripe/balance/source_types.ex#L1)

Source-type breakdown of a `LatticeStripe.Balance.Amount`.

Stable inner shape: `card`, `bank_account`, `fpx`. Future Stripe payment-method
keys (e.g. `"ach_credit_transfer"`, `"link"`) land in `:extra` per the
typed-inner-open-outer pattern (Phase 17 D-02) so struct shape never drifts
when Stripe adds a new payment method.

# `t`

```elixir
@type t() :: %LatticeStripe.Balance.SourceTypes{
  bank_account: integer() | nil,
  card: integer() | nil,
  extra: map(),
  fpx: integer() | nil
}
```

Source-type breakdown of a `Balance.Amount`.

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*Consult [api-reference.md](api-reference.md) for complete listing*