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panic handling request textDocument/signatureHelp runtime error: invalid memory address or nil pointer dereference goroutine 6021 [running]:runtime/debug.Stack()runtime/debug/stack.go:26 +0x64github.com/microsoft/typescript-go/internal/lsp.(*Server).dispatchLoop.func1.1()github.com/microsoft/typescript-go/internal/lsp/server.go:357 +0x54panic({0x7ff6a477cbc0?, 0x7ff6a4fa1390?})runtime/panic.go:792 +0x124github.com/microsoft/typescript-go/internal/ls.(*LanguageService).GetSignatureHelpItems(0x4011b55b18?, {0x7ff6a4a79d10?, 0x4016d0a1e0?}, 0x19, 0x7ff6a49256bc?, 0x4011e242c8, 0x4012747ea0, 0x40000059e0, 0x4011cf6380?)github.com/microsoft/typescript-go/internal/ls/signaturehelp.go:103 +0x10cgithub.com/microsoft/typescript-go/internal/ls.(*LanguageService).ProvideSignatureHelp(0x4012421290, {0x7ff6a4a79d10, 0x4016d0a1e0}, {0x40128dfef0?, 0x0?}, {0x0?, 0x0?}, 0x4012747ea0, 0x40000059e0, 0x400e983e70)github.com/microsoft/typescript-go/internal/ls/signaturehelp.go:47 +0x98github.com/microsoft/typescript-go/internal/lsp.(*Server).handleSignatureHelp(0x4000000b40, {0x7ff6a4a79d10, 0x4016d0a1e0}, 0x40129fd230)github.com/microsoft/typescript-go/internal/lsp/server.go:679 +0xe4github.com/microsoft/typescript-go/internal/lsp.(*Server).handleRequestOrNotification(0x400e983f68?, {0x7ff6a4a79d10?, 0x4016d0a1e0?}, 0x7ff6a46138a0?)github.com/microsoft/typescript-go/internal/lsp/server.go:492 +0x2c0github.com/microsoft/typescript-go/internal/lsp.(*Server).dispatchLoop.func1()github.com/microsoft/typescript-go/internal/lsp/server.go:370 +0x70created by github.com/microsoft/typescript-go/internal/lsp.(*Server).dispatchLoop in goroutine 9github.com/microsoft/typescript-go/internal/lsp/server.go:388 +0x484[Error - 11:41:44 AM] Request textDocument/signatureHelp failed. Message: InternalError: panic handling request textDocument/signatureHelp: runtime error: invalid memory address or nil pointer dereference Code: -32603Steps to reproduce
This is tricky - I'm having issues getting this to happen with a manual trigger, so maybe this only occurs with the appropriate trigger reason.
In VS Code, create a file with the following contents
letx=[|someCall()|]
Highlight the entire result and add parentheses. I guess this will trigger signature help with something like the following parameters
{ "textDocument": { "uri": "untitled:Untitled-1" }, "position": { "line": 0, "character": 19 }, "context": { "isRetrigger": false, "triggerCharacter": "(", "triggerKind": 2 }}