Slow to create many Watch dropdown expressions #88240
Description
Issue Type: Bug
The Watch dropdown in the Debug tab becomes slow to respond to user input when there are many expressions being watched in it.
To reproduce (I'm using node js for debugging):
New js file...
Create lots of variables (I don't know if the size of the information in the variables matters or not so I just added a decently sized array):
a=b=c=d=e=f=g=h=i=j=k=l=m=n=o=p=q=r=s=t=u=v=w=x=y=z= [12,253,5,457,32,3647,48,56,679,567,45]
Then in the Watch dropdown, create a separate expression for every variable.
i.e.
a
b
c
d
...
Since I've done the whole alphabet you should have 26 individual Watch expressions. You should notice that the dropdown starts to take longer and longer to respond as you add more and more expressions.
VS Code version: Code - Insiders 1.42.0-insider (629a08e, 2020-01-07T05:28:24.258Z)
OS version: Windows_NT x64 10.0.18362
System Info
| Item | Value |
|---|---|
| CPUs | Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz (12 x 3192) |
| GPU Status | 2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off surface_control: disabled_off surface_synchronization: enabled_on video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off webgl: enabled webgl2: enabled |
| Load (avg) | undefined |
| Memory (System) | 7.89GB (1.54GB free) |
| Process Argv | |
| Screen Reader | no |
| VM | 0% |
