NetworkFilterChain<T> class

Immutable, ordered chain of NetworkFilters with short-circuit evaluation.

The chain runs filters in insertion order and stops at the first false. An empty chain permits everything (returns true).

Chains are value-like: add and merge return new instances.

Example:

// Build a chain that logs only successful (2xx) GET/POST responses.
final chain = NetworkFilterChain<Response<dynamic>>([
  const StatusCodeFilter.successOnly(),
  const HttpMethodFilter({'GET', 'POST'}),
]);

if (chain.apply(response)) {
  logger.logNetworkResponse(response);
}

// Extend an existing chain:
final sampled = chain.add(const SamplingFilter(0.1));