ref(chain)!: create module indexer

and replace keychain module with `balance.rs`

crates/wallet/src/wallet/mod.rs

@@ -19,10 +19,10 @@ use alloc::{
     sync::Arc,
     vec::Vec,
 };
-pub use bdk_chain::keychain::Balance;
+pub use bdk_chain::Balance;
 use bdk_chain::{
     indexed_tx_graph,
-    keychain::KeychainTxOutIndex,
+    indexer::keychain_txout::KeychainTxOutIndex,
     local_chain::{
         self, ApplyHeaderError, CannotConnectError, CheckPoint, CheckPointIter, LocalChain,
     },
@@ -112,7 +112,7 @@ pub struct Wallet {
 
 /// An update to [`Wallet`].
 ///
-/// It updates [`bdk_chain::keychain::KeychainTxOutIndex`], [`bdk_chain::TxGraph`] and [`local_chain::LocalChain`] atomically.
+/// It updates [`KeychainTxOutIndex`], [`bdk_chain::TxGraph`] and [`local_chain::LocalChain`] atomically.
 #[derive(Debug, Clone, Default)]
 pub struct Update {
     /// Contains the last active derivation indices per keychain (`K`), which is used to update the
@@ -2451,7 +2451,7 @@ fn create_signers<E: IntoWalletDescriptor>(
     let _ = index
         .insert_descriptor(KeychainKind::Internal, descriptor)
         .map_err(|e| {
-            use bdk_chain::keychain::InsertDescriptorError;
+            use bdk_chain::indexer::keychain_txout::InsertDescriptorError;
             match e {
                 InsertDescriptorError::DescriptorAlreadyAssigned { .. } => {
                     crate::descriptor::error::Error::ExternalAndInternalAreTheSame

crates/wallet/tests/common.rs

@@ -1,13 +1,12 @@
 #![allow(unused)]
-
-use bdk_chain::indexed_tx_graph::Indexer;
 use bdk_chain::{BlockId, ConfirmationTime, ConfirmationTimeHeightAnchor, TxGraph};
-use bdk_wallet::wallet::Update;
-use bdk_wallet::{KeychainKind, LocalOutput, Wallet};
-use bitcoin::hashes::Hash;
+use bdk_wallet::{
+    wallet::{Update, Wallet},
+    KeychainKind, LocalOutput,
+};
 use bitcoin::{
-    transaction, Address, Amount, BlockHash, FeeRate, Network, OutPoint, Transaction, TxIn, TxOut,
-    Txid,
+    hashes::Hash, transaction, Address, Amount, BlockHash, FeeRate, Network, OutPoint, Transaction,
+    TxIn, TxOut, Txid,
 };
 use std::str::FromStr;