chore: move decode_revert_reason to primitives (#2615)

crates/primitives/src/abi.rs

@@ -0,0 +1,16 @@
+//! Eth ABI helpers.
+use crate::constants::SELECTOR_LEN;
+
+/// Returns the revert reason from the given output data, if it's an abi encoded String. Returns
+/// `None` if the output is not long enough to contain a function selector or the content is not a
+/// valid abi encoded String.
+///
+/// **Note:** it's assumed the `out` buffer starts with the call's signature
+pub fn decode_revert_reason(out: impl AsRef<[u8]>) -> Option<String> {
+    use ethers_core::abi::AbiDecode;
+    let out = out.as_ref();
+    if out.len() < SELECTOR_LEN {
+        return None
+    }
+    String::decode(&out[SELECTOR_LEN..]).ok()
+}

crates/primitives/src/lib.rs

@@ -9,6 +9,7 @@
 //!
 //! This crate contains Ethereum primitive types and helper functions.
 
+pub mod abi;
 mod account;
 pub mod basefee;
 mod bits;