await (await fn()).method() gets wrong type in intellisense

[greggman]

Type: Bug

VSCode's JS intellisense can't handle the expression

const v = await(await fn1()).method2()

Repo

class Banana { }

class BananaTree {
  async requestBanana() {
    return new Banana();
  }
}

async function requestBananaTree() {
  return new BananaTree();
}

const banana1 = await (await requestBananaTree()).requestBanana();

const tree = await requestBananaTree();
const banana2 = await tree.requestBanana();

If you hover over banana2 you'll see it says const banana2: Banana. But if you hover over banana1 it says const banana1: any even though those are equivalent statements in JavaScript itself.

Is that a known issue?

VS Code version: Code 1.100.2 (Universal) (848b80a, 2025-05-14T21:47:40.416Z)
OS version: Darwin arm64 24.5.0
Modes:

System Info

Item	Value
CPUs	Apple M1 Max (10 x 2400)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	7, 9, 7
Memory (System)	64.00GB (8.91GB free)
Process Argv	/Users/gman/src/gpuweb/cts --crash-reporter-id daf649d2-2da7-4be7-a143-3be5fa166ded
Screen Reader	no
VM	0%

Extensions (26)

Extension	Author (truncated)	Version
vscode-eslint	dba	3.0.10
tintd	gfx	0.0.7
copilot-chat	Git	0.27.2
go	gol	0.46.1
geminicodeassist	goo	2.35.0-dogfood.1
cloudcode	goo	2.29.0
bikeshed	kai	0.0.2
vscode-clang	mit	0.2.4
compare-folders	mos	0.25.1
vscode-language-pack-ja	MS-	1.100.2025051409
csharp	ms-	2.76.27
vscode-dotnet-runtime	ms-	2.3.5
debugpy	ms-	2025.8.0
isort	ms-	2025.0.0
python	ms-	2025.6.1
vscode-pylance	ms-	2025.5.1
remote-ssh	ms-	0.120.0
remote-ssh-edit	ms-	0.87.0
cpptools	ms-	1.25.3
remote-explorer	ms-	0.5.0
gnls	mse	0.1.4
rewrap	stk	1.16.3
code-spell-checker	str	4.0.47
vscode-lldb	vad	1.11.4
vscode-icons	vsc	12.13.0
gitblame	wad	11.1.3

(1 theme extensions excluded)

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