JSDoc suggestions not working with ES6 methods

[seanlaff]

Issue Type: Bug

I'm seeing the same behavior as mentioned in this previously addresssed ticket #27729

export default class abc {
    myfunc = (myparam) => {
      return myparam
    }
}

Typing /** above myfunc will not trigger the JSDoc snippet

VS Code version: Code 1.29.0 (5f24c93, 2018-11-12T07:39:38.932Z)
OS version: Darwin x64 17.7.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz (8 x 2500)
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: enabled rasterization: unavailable_software video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 3, 3
Memory (System)	16.00GB (0.04GB free)
Process Argv	-psn_0_7460637
Screen Reader	no
VM	0%

[mjbvz]

Opened microsoft/TypeScript#28786 to track this upstream