feat(forge): implement vm.signTypedData cheatcode

crates/cheatcodes/Cargo.toml

@@ -62,3 +62,4 @@ tracing.workspace = true
 walkdir.workspace = true
 proptest.workspace = true
 serde.workspace = true
+

crates/cheatcodes/spec/src/vm.rs

@@ -2651,6 +2651,10 @@ interface Vm {
     #[cheatcode(group = Crypto)]
     function sign(uint256 privateKey, bytes32 digest) external pure returns (uint8 v, bytes32 r, bytes32 s);
 
+    /// Signs Human-Readable Typed Data with `privateKey` using the secp256k1 curve.
+    #[cheatcode(group = Crypto)]
+    function signTypedData(string calldata jsonData, uint256 privateKey) external pure returns (uint8 v, bytes32 r,bytes32 s);
+
     /// Signs `digest` with `privateKey` using the secp256k1 curve.
     ///
     /// Returns a compact signature (`r`, `vs`) as per EIP-2098, where `vs` encodes both the

crates/cheatcodes/src/crypto.rs

@@ -1,6 +1,7 @@
 //! Implementations of [`Crypto`](spec::Group::Crypto) Cheatcodes.
 
 use crate::{Cheatcode, Cheatcodes, Result, Vm::*};
+use alloy_dyn_abi::eip712::TypedData;
 use alloy_primitives::{keccak256, Address, B256, U256};
 use alloy_signer::{Signer, SignerSync};
 use alloy_signer_local::{
@@ -51,6 +52,16 @@ impl Cheatcode for sign_0Call {
     }
 }
 
+impl Cheatcode for signTypedDataCall {
+    fn apply(&self, _state: &mut Cheatcodes) -> Result {
+        let Self { jsonData, privateKey } = self;
+        let typed_data: TypedData = serde_json::from_str(jsonData)?;
+        let digest = typed_data.eip712_signing_hash()?;
+        let sig = sign(privateKey, &digest)?;
+        Ok(encode_full_sig(sig))
+    }
+}
+
 impl Cheatcode for signCompact_0Call {
     fn apply(&self, _state: &mut Cheatcodes) -> Result {
         let Self { wallet, digest } = self;

crates/evm/traces/src/decoder/mod.rs

@@ -457,11 +457,12 @@ impl CallTraceDecoder {
 
                 Some(decoded.iter().map(format_token).collect())
             }
-            "signDelegation" | "signAndAttachDelegation" => {
+            "signDelegation" | "signAndAttachDelegation" | "signTypedData" => {
                 let mut decoded = func.abi_decode_input(&data[SELECTOR_LEN..], false).ok()?;
                 // Redact private key and replace in trace for
                 // signAndAttachDelegation(address implementation, uint256 privateKey)
                 // signDelegation(address implementation, uint256 privateKey)
+                // signTypedData(string jsonData, uint256 privateKey)
                 decoded[1] = DynSolValue::String("<pk>".to_string());
                 Some(decoded.iter().map(format_token).collect())
             }