digdigdig3 0.3.4

Unified async Rust API for 47 exchange connectors (REST + WebSocket). The core layer — pure ExchangeHub + connectors. Higher-level builder, persistence, replay, OB tracker live in `digdigdig3-station`.
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//! # Chain module
//!
//! Shared chain interaction layer for on-chain DEX connectors.
//!
//! ## Overview
//!
//! Rather than each on-chain connector creating its own SDK instance,
//! this module defines a `ChainProvider` abstraction that is shared.
//! One `EvmProvider` per RPC endpoint is enough — multiple connectors
//! pointing at Arbitrum all share a single HTTP connection pool.
//!
//! ## Feature flags
//!
//! | Feature | What it unlocks |
//! |---------|----------------|
//! | `onchain-cosmos` | `CosmosProvider` — Cosmos SDK chain provider (dYdX, Osmosis) |
//! | `onchain-starknet` | `StarkNetProvider` — raw JSON-RPC StarkNet chain provider |

mod provider;
pub use provider::*;

#[cfg(feature = "onchain-cosmos")]
pub mod cosmos;
#[cfg(feature = "onchain-cosmos")]
pub use cosmos::{CosmosChain, CosmosProvider};

#[cfg(feature = "onchain-starknet")]
mod starknet_chain;
#[cfg(feature = "onchain-starknet")]
pub use starknet_chain::{StarkNetChain, StarkNetProvider};