SolidityPack negative int equal positive (PaddedBigBytes)

[b1674927]

github.com/0xsequence/ethkit v1.22.4

SolidityPack seems to not consider negative signs:

entry1, err := ethcoder.SolidityPackHex([]string{"int32"}, []interface{}{int32(-42)})
entry2, err := ethcoder.SolidityPackHex([]string{"int32"}, []interface{}{int32(42)})
fmt.Println(entry1)
fmt.Println(entry2)
// entry1 == entry2

yields 0x0000002a, 0x0000002a

Other integer-types seem to show the same issue.

comparing to ethers/utils/solidity.ts:

let v1 = ethers.utils.solidityPack(["int32"], [-42]);
let v2 = ethers.utils.solidityPack(["int32"], [42]);
console.log(v1);
console.log(v2);

yields 0xffffffd6, 0x0000002a