Editor is undefined
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Description
Describe the bug
The property 'editor' can be undefined (see Screenshots section).
To Reproduce
Steps to reproduce the behavior:
- Start VSCode
- Check Breakpoints > Promise Rejects and Breakpoints > Uncaught Exceptions
- Start my extension in debug mode (Debugger > Launch client). I believe, that can be reproduced with any extension, though it happened to me during development of mine plugin.
- If any file is opened after start, close all of them and start again.
Expected behavior
The absence of the error.
Screenshots

Environment (please complete the following information):
- Extension (VsCodeVim) version: 0.16.3
- VSCode version: 1.27.1
- OS: Ubuntu 16.04
Additional context
-
Probably, that is same as #3030.
-
Code line I am talking about is src/mode/modeHandler.ts#1324
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at src/mode/modeHandler.ts line 1324 and compare the failure with the related issue #3030. Reproduce in VSCode 1.27.1 by enabling Promise Rejects and Uncaught Exceptions, launching an extension in debug mode, closing open files, and starting again; done means the 'editor' error no longer occurs.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100