@type measurements() :: %{
  optional(key :: atom()) => %{
    :value => number(),
    optional(:unit) => String.t()
  }
}

@type t() :: %Sentry.Transaction{
  contexts: %{
    trace: %{
      :trace_id => String.t(),
      :span_id => String.t(),
      optional(:parent_span_id) => String.t(),
      optional(:op) => String.t(),
      optional(:description) => String.t(),
      optional(:status) => String.t()
    }
  },
  data: map(),
  environment: String.t(),
  event_id: Sentry.UUID.t(),
  measurements: measurements(),
  platform: String.t(),
  sdk: Sentry.Interfaces.SDK.t(),
  span_id: term(),
  spans: [Sentry.Interfaces.Span.t()],
  start_timestamp: String.t() | number(),
  tags: map(),
  timestamp: String.t() | number(),
  transaction: String.t(),
  transaction_info: transaction_info()
}

@type transaction_info() :: %{source: String.t()}