"Hardhat Tracer wanted to print trace, but lastTrace is undefined." when using `--trace-error`

[fvictorio]

Versions used:

• Hardhat 2.22.6
• hardhat-tracer: 3.0.2

Reproduction steps

Solidity file:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract Foo {
    uint public x;

    function incBy(uint by) public {
        require(by > 0, "by must be positive");
        x += by;
    }
}

Test file:

const { expect } = require("chai");

describe("Foo", function () {
  it("test", async function () {
    const foo = await ethers.deployContract("Foo")

    await expect(foo.incBy(0)).to.be.reverted;
  });
});

Hardhat config:

require("@nomicfoundation/hardhat-toolbox");
require("hardhat-tracer");

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: "0.8.24",
};

Run npx hardhat test --trace-error. Curiously, --trace seems to work fine.

[zemse]

Thanks for reporting, I just pushed a commit and released 3.0.3. Does that fix this issue?

[shark0der]

I can confirm it fixed the issue. Thank you!

[fvictorio]

@shark0der was the one that pointed me to this problem, so I'm going to assume it's fixed. Thanks for the quick fix, @zemse!