New outline: no outline in IIFE

[paror]

Issue Type: Bug

In the new outline tool, there is no element visible in IIFE.

For sample:
(function() {
function foo() {}
})();

The function "foo" is not visible in the outline

(thanks for this new tool)

VS Code version: Code - Insiders 1.24.0-insider (5799dec, 2018-05-16T07:07:37.740Z)
OS version: Darwin x64 17.5.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-2500S CPU @ 2.70GHz (4 x 2700)
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: enabled rasterization: unavailable_software video_decode: enabled video_encode: enabled vpx_decode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 2, 2
Memory (System)	12.00GB (1.65GB free)
Process Argv	/Applications/Visual Studio Code - Insiders.app/Contents/MacOS/Electron
Screen Reader	no
VM	0%

Extensions (6)

Extension	Author (truncated)	Version
vscode-eslint	dba	1.4.9
vscode-language-pack-fr	MS-	1.23.0
debugger-for-chrome	msj	4.4.3
minifyandconcat	par	0.1.0
convert-css-in-js	pau	1.0.0
vscode-open	san	0.1.0

(1 theme extensions excluded)

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• add markdown outline (#45304)

[mjbvz]

TS issue. Symbol search also does not work in this case