"expected either either a list of a %GenLSP.Structures.SymbolInformation{}, a list of a %GenLSP.Structures.DocumentSymbol{}, or null or a %GenLSP.ErrorResponse{}"

[teamon]

I got this error:

** (MatchError) no match of right hand side value: {:error, "expected either either a list of a %GenLSP.Structures.SymbolInformation{}, a list of a %GenLSP.Structures.DocumentSymbol{}, or null or a %GenLSP.ErrorResponse{}"}
    (gen_lsp 0.8.1) lib/gen_lsp.ex:418: GenLSP.dump!/2
    (gen_lsp 0.8.1) lib/gen_lsp.ex:291: anonymous fn/6 in GenLSP.loop/3
    (gen_lsp 0.8.1) lib/gen_lsp.ex:397: GenLSP.attempt/4
    (stdlib 5.2) proc_lib.erl:241: :proc_lib.init_p_do_apply/3



[Error - 15:47:30] LSP Exited.

• NextLS v0.22.4

These errors happen during formatter run, which then prevents the file from being saved (in vscode).

Would it be possible to make the next-ls somehow resilient and keep working in case of any error instead of crashing?

[mhanberg]

I ran into this bug the other day, forgot to open an issue, but am working on a fix.

So two issues here:

• the actual bug of the document symbols returning a value that is not spec compliant
• determining if validation of spec inputs and outputs should result in the server crashing. previously i had it as it should crash, but being resilient to the improper data is probably more convenient.