signERC2612Permit not working on Ganache/Buidler

[gorgos]

@dmihal I tried to fix it and the following changes made it work:

1. Change

   eth-permit/src/rpc.ts

   Line 37 in 5dfcfa5

   const result = await send(provider, 'eth_signTypedData_v4', [fromAddress, _typeData]);

   to const result = await send(provider, 'eth_signTypedData', [fromAddress, JSON.parse(_typeData)]); (two changes)

2. Add jsonrpc: '2.0', to

   eth-permit/src/rpc.ts

   Line 4 in 5dfcfa5

   const payload = {

   .

Do you have any insights on this?

[ghardin1314]

Apparently metamask knows about this and a fix is shipped. Already working on firefox and will be working on chrome next week. Discussed here

[dmihal]

The new version tries eth_signTypedData_v4 & eth_signTypedData

Let me know if anyone's still having issues