Using EDR makes node hang

[fvictorio]

Hardhat issue: NomicFoundation/hardhat#4997

Reproduction steps:

1. Create a node project

2. Install @nomicfoundation/edr

3. Create an index.js file with these contents:

   const edr = require("@nomicfoundation/edr")
   
   const config = {
     allowBlocksWithSameTimestamp: true,
     allowUnlimitedContractSize: true,
     bailOnCallFailure: true,
     bailOnTransactionFailure: true,
     blockGasLimit: 1_000_000n,
     chainId: 31337n,
     chains: [],
     coinbase: Buffer.from("0000000000000000000000000000000000000000", "hex"),
     genesisAccounts: [],
     hardfork: edr.SpecId.Latest,
     minGasPrice: 0n,
     mining: {
       autoMine: true,
       memPool: {
         order: edr.MineOrdering.Priority,
       }
     },
     networkId: 31337n,
   }
   
   const loggerConfig = {
     enable: true,
     decodeConsoleLogInputsCallback: () => {},
     getContractAndFunctionNameCallback: () => {},
     printLineCallback: () => {},
   }
   
   async function main() {
     const context = new edr.EdrContext()
     const provider = edr.Provider.withConfig(context, config, loggerConfig, () => {})
   
     console.log("main finished")
   }
   
   main().catch((e) => {
       console.error(e);
       process.exit(1);
   });

4. Run node index.js

main finished will be logged, but the process will hang.

What I know so far

There are a couple of issues in the napi-rs repo (here and here) that suggest that ThreadSafeFunction is the cause.

I upgraded the napi and napi-derive dependencies but that didn't fix the issue (also, when I did this I got some compilation errors, and I fixed them by adding a bunch of .to_vec() and replacing some ._as_ptr() with .as_mut_ptr()).

I then removed all the functions that EdrProvider.with_config receives. This did fix the issue, which seems to confirm that the problem is related to ThreadSafeFunction.