fix: added features and test new bin

Cargo.toml

@@ -17,6 +17,13 @@ debug = false
 panic = "abort"
 overflow-checks = true
 
+[features]
+default = ["all"]
+all = ["near", "bitcoin", "evm"]
+bitcoin = ["sha2"]
+evm = []
+near = []
+
 [dependencies]
 rlp = "0.6.1"
 hex = "0.4.3"
@@ -25,7 +32,7 @@ near-sdk = { version = "5.3.0" }
 serde-big-array = "0.5.1"
 bs58 = "0.5.1"
 serde = "1.0"
-sha2 = "0.10.8"
+sha2 = { version = "0.10.8", optional = true }
 
 [dev-dependencies]
 # ethereum

src/lib.rs

@@ -1,6 +1,10 @@
+#[cfg(feature = "bitcoin")]
 pub mod bitcoin;
-pub mod constants;
+#[cfg(feature = "evm")]
 pub mod evm;
+#[cfg(feature = "near")]
 pub mod near;
+
+pub mod constants;
 pub mod transaction_builder;
 pub mod types;

src/types.rs

@@ -1,9 +1,17 @@
+#[cfg(feature = "bitcoin")]
 use crate::bitcoin::bitcoin_transaction_builder::BitcoinTransactionBuilder;
+
+#[cfg(feature = "evm")]
 use crate::evm::evm_transaction_builder::EVMTransactionBuilder;
+
+#[cfg(feature = "near")]
 use crate::near::near_transaction_builder::NearTransactionBuilder;
 
+#[cfg(feature = "near")]
 pub type NEAR = NearTransactionBuilder;
 
+#[cfg(feature = "evm")]
 pub type EVM = EVMTransactionBuilder;
 
+#[cfg(feature = "bitcoin")]
 pub type BITCOIN = BitcoinTransactionBuilder;