Warning: Accessing non-existent property ‘INVALID_ALT_NUMBER’ of module exports inside circular dependency

[MoMannn]

This is a problem with package solidity-parser-antlr with is a dependency of sol-merger which flattener depends on.

[MoMannn]

Should test this with the latest version since sol-merger now depends on https://github.com/tunnelvisionlabs/antlr4ts