Incorrect management of Timeouts

Using this library, timeouts typically happen in the background, but end up crashing the nodejs server.
Its simply because in resolving these timeouts, the library tries to delete a variable that is undefined.

/app/node_modules/json-rpc-dual-engine/lib/json-rpc/json-rpc-client.js:42
() => delete this[PRIVATE.PENDING_CALLS][id],
^

TypeError: Cannot convert undefined or null to object
at /app/node_modules/json-rpc-dual-engine/lib/json-rpc/json-rpc-client.js:42:45
at Timeout._onTimeout (/app/node_modules/json-rpc-dual-engine/lib/util/timeout-promise
at listOnTimeout (node:internal/timers:557:17)
at processTimers (node:internal/timers:500:7)

I corrected the issue for me by doing () => delete this[PRIVATE.PENDING_CALLS]?.[id]

[leonardoraele]

I was unable to reproduce this issue. I improved tests for the client's timeout, but it's working as intended in the tests. Adding the null-coalescing operator to PRIVATE.PENDING_CALLS isn't a good idea since it should never be null at this point, so it will just make the program fail silently.

Can you provide more information on your setup, maybe an example?

[akwotom]

The code is actually bulky. What I did is register a method which is async. The method calls and returns properly, but shortly after, the timeout error shows.