Global errors differ depending on initial state of playground

Open

#3,032 opened on Feb 16, 2024 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 38/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: typescript
Domain: devtools

Research direction

Start with the two linked Playground examples using the es2020 target, then reproduce the comment toggling sequence in foo. Compare whether the AsyncDisposable and Disposable diagnostics and the await quick-fix remain consistent after each toggle; done means both initial states produce the same errors and quick-fix result.

Written by the indexing model from the issue text.

Description

Playground

I'm having a hard time consistently reproing this, so bare with me.

First, use es2020 as a target.

Playground for this example:

function foo() {
    await using asd = 123;
}

Playground for this example:

function foo() {
    //await using asd = 123;
}

In both cases, toggle a comment on the line in foo, and then toggle the comment state again.

Depending on the initial contents of the playground, the following errors will not reappear:

Cannot find global type 'AsyncDisposable'.(2318)
Cannot find global type 'Disposable'.(2318)

What's more, if you try applying a quick fix on the await keyword to add the async keyword to the function you may get different results than if you enter it manually.

Dominant language: TypeScript
Stars: 2.6k
Forks: 1.5k
Avg merge: 2d 12h
Merged PRs (30d): 8

Contributor guide

No contributing guide indexed for this repository

First steps

Read the whole issue, then the project's contributing guide.
Comment on the issue to say you are picking it up — it saves two people doing the same work.
Fork the repository and make your change on a branch.
Open a pull request that references the issue number.

Similar issues

[MagmaFusion] rapports qualité - contenus des rubriques en anglais manquants Open

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

InseeFr/Bauhaus#1634 · Opened Sep 23, 2026
[Bug]: SSH host picker duplicates configured aliases and known_hosts targets Open

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

pingdotgg/t3code#13270 · Opened Sep 23, 2026
resetSseResponseWait and noteRequestProgress silently fail to re-arm the 60s relay timeout if progress tokens arrive as strings Open

bug v2

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

modelcontextprotocol/inspector#2458 · 1 comment · Opened Sep 23, 2026
Resources: Update work of changsha Open

Difficulty 1/5 Under an hour Newbie friendliness 75/100

railmapgen/rmp-gallery#4068 · Opened Sep 23, 2026
sass-1.105.0.tgz: 1 vulnerabilities (highest severity is: 7.5) Open

Mend: dependency security vulnerability status: needs triage 🕵️‍♀️

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

carbon-design-system/ibm-products#9907 · Opened Sep 23, 2026

More TypeScript issues