Error from the Language Server: Request textDocument/hover failed with message: Cannot read property ’map’ of undefined (Internal Error) [7996 times]

[twlz0ne]

Behavior

Without option --log-level:

With option --log-level:

Steps to reproduce the behavior

1. Download test-lsp-typescript-issue535.el to /path/to/test-lsp-typescript-issue535.el

2. Clone https://github.com/Microsoft/TypeScriptSamples to /path/to/Microsoft/TypeScriptSamples

/path/to/emacs -nw -Q -l \
            /path/to/test-lsp-typescript-issue535.el \
            /path/to/Microsoft/TypeScriptSamples/angular2/app/todo.ts

Environment

• macOS 10.11.6
• Emacs 27.0.5
• node 8.11.3
• Packages:
  • dash-20180910.1856
  • dash-functional-20180107.1618
  • epl-20180205.2049
  • flycheck-20181018.1021
  • lsp-mode-20181024.338
  • lsp-typescript-20180906.524
  • lsp-ui-20181021.1713
  • markdown-mode-20180904.1601
  • nodenv-20181023.1543
  • pkg-info-20150517.1143
  • typescript-mode-20181018.553

[felixfbecker]

Do you have more language server logs? A stack trace maybe?

[twlz0ne]

@felixfbecker Once added option --tsserver-path, the issue dispeared:

Seems lsp-ui depends on option --tsserver-path, if not specified, it will keep asking. Is this the problem?

If just add --log-level=4 --tsserver-log-file=lsp-typescript.log, the log file will not be created. So I can't provide the full trace.

[felixfbecker]

This language server does not use tsserver, so I don't know where this is coming from