@eth-optimism/ethereumjs-vm v4.2.0-alpha.3

ethereumjs-ovm

Implements Optimism's OVM in Javascript. Forked with <3 from ethereumjs-vm!

Logging

This fork provides some custom logging tools for introspecting the OVM via the debug package. Particularly, the environment variable DEBUG='ethjs-ovm:interpreter will allow you to log various degrees of internal EVM execution such as calls, stack, and memory. You must also add DEBUG_OVM=true to enable debugging. The logging namespace includes the start and ending bytes of the address and the call depth (e.g. js-ovm:intrp:0xdeadde..ad0005:d5)

Available namespaces are:

• All OVM debug logging (warning, lots of logs): DEBUG='*'
• Call logging: DEBUG='*:calls (recommended to run first)
• Step logging: DEBUG='*:calls:steps (recommended to run filtered by address, e.g. DEBUG='*:calls,js-ovm:intrp:0xdeadde..ad0005:d2:calls:steps')
• Memory logging: DEBUG=*:calls:memory (recommended to run filtered by address, see above)

Or mix and match any of the above to get your desired logging level.

LICENSE

MPL-2.0