Microsoft/TypeScript
Auf GitHub ansehenError 2339 with nullish coalescing to empty object
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#51.665 geöffnet am 28. Nov. 2022
BugDomain: check: Control FlowHelp Wanted
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Beschreibung
Bug Report
🔎 Search Terms
2339 Property does not exist on type empty object
🕗 Version & Regression Information
Tested on 4.2.3 (version we use on our project) and 4.8.4 (latest available in playground)
⏯ Playground Link
Playground link with relevant code
💻 Code
const ok = (): null | { [param: string]: string } => Math.random() > .5 ? null : {};
const ko = (): null | { uri: string; path: string; [param: string]: string } => Math.random() > .5 ? null : { uri: '', path: '' };
{
// no errors
const { oid, pid } = ok() ?? {};
}
{
// error 2339 - Property does not exist on type '{ [param: string]: string; uri: string; path: string; } | {}'
const { oid, pid } = ko() ?? {};
}
This is a simplified test case. I did encounter error while using @reach/router useMatch hook API
🙁 Actual behavior
Error Property does not exist on type '{ [param: string]: string; uri: string; path: string; } | {}' (2339)
🙂 Expected behavior
No error expected