microsoft / microsoft/TypeScript
Unable to access ServiceWorkerGlobalScope via `self.`
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Description
Since ServiceWorker related types sit in lib.webworker.d.ts, webworker lib need to be added to tsconfig.json.
{
"compilerOptions": {
"lib": [
"es2017",
"webworker"
]
}
}
But in current lib.webworker.d.ts, it declare var self: WorkerGlobalScope;, so we can't access ServiceWorkerGlobalScope via self.
TypeScript Version: 2.2.1
Expected behavior:
Can access ServiceWorkerGlobalScope via self.(like self.clients)
Actual behavior:
Access with error.
Contributor guide
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.
Research direction
Start with lib/lib.webworker.d.ts at the WorkerGlobalScope self declaration and compare it with the ServiceWorkerGlobalScope members referenced in the issue. Reproduce the TypeScript 2.2.1 example using a tsconfig.json that includes the webworker lib; the work is done when self exposes ServiceWorkerGlobalScope functionality such as clients without an error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100