Cannot read property 'parent' of null

[crystalfp]

Issue Type: Bug

Load the attached file, change it, after a while this error appears:
Parsing error: Cannot read property 'parent' of null - eslint [1, 1]

The above error does not appear when running eslint outside VSCode.

eslint.yaml
synonyms.ts
tsconfig.json

Extension version: 1.9.1
VS Code version: Code 1.39.2 (6ab598523be7a800d7f3eb4d92d7ab9a66069390, 2019-10-15T15:35:18.241Z)
OS version: Windows_NT x64 10.0.18362

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz (8 x 2904)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software oop_rasterization: disabled_off protected_video_decode: enabled rasterization: enabled skia_deferred_display_list: disabled_off skia_renderer: disabled_off surface_synchronization: enabled_on video_decode: enabled viz_display_compositor: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.81GB (6.76GB free)
Process Argv	D:\Projects\CouchDB\CouchDB.code-workspace
Screen Reader	no
VM	0%

[RodyGL]

Same error happening to me. I can't continue to use ESLint cause is throwing none existing errors like:

• Cannot read property 'parent' of nul
• > can be escaped with >.

Among other errors just by editing or adding files. The only fix for now is reloading vscode like 1000 times a day...

[dbaeumer]

@crystalfp can you please provide me with a GitHub repository I can clone that demos what you are experiencing. Usually errors like this highly depend on the used npm package versions as well.

[xg4]

It seems that typescript-eslint error typescript-eslint/typescript-eslint#1114

[dbaeumer]

@xg4 thanlks for pointing this out.

[dbaeumer]

I will close the issue in favour of typescript-eslint/typescript-eslint#1114