Pressing . selects the first option in the context menu even before it's opened

[Swazimodo]

Issue Type: Bug

In my react app typing 'this.' will automattically type 'this.UNSAFE_componentWillMount.'. You then have to delete everything after 'this'. After this happens you can press period and you then get the context menu like it should have done initially.

However, this only appears to happen if you type fast. I slowed down a little while doing some further testing and it did not happen.

VS Code version: Code 1.30.2 (61122f8, 2019-01-07T22:54:13.295Z)
OS version: Windows_NT x64 6.1.7601

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (8 x 3408)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Memory (System)	31.79GB (14.90GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (6)

[jrieken]

This is because of the "editor.acceptSuggestionOnCommitCharacter"-setting. This is what happens

• typing this starts suggesting and the best match is UNSAFE_componentWillMount
• pressing ., with having the aforementioned setting, accepts that suggestion and insert the dot.

Turning the setting to false will get you out of this.

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[Swazimodo]

If that was the case then why does typing the same thing work if I just do it slightly slower?

[jrieken]

Looks like you have the this suggestion atop then. Not sure why...

[jrieken]

Adding @mjbvz, it seems that the this suggestion disappears while typing...

[mjbvz]

@Swazimodo Do you still see this problem in the latest vscode insiders builds when you fully type out this.?

I've opened microsoft/TypeScript#30012 to track why this is not suggested first when you type out thi or th, but I can't reproduce the original error in a new create-react-app project

[mjbvz]

I'm closing this issue as I can't repo the issue when fully typing out this.. microsoft/TypeScript#30012 tracks the root cause of this completions not being properly sorted before you fully type out this.