HttpClient in 20.1 throws TS2769 when using documented 'timeout' option #62581
Description
Which @angular/* package(s) are the source of the bug?
common
Is this a regression?
Yes
Description
(Credit to @IgorSedov who found this and wrote 95% of this but had to get going)
In Angular 20.1, a new timeout option was introduced for HttpClient requests, as documented in the official guide and 20.1 release notes. However, using this option currently results in a TypeScript error:
ERROR TS2769: No overload matches this call.
The last overload gave the following error.
Object literal may only specify known properties, and 'timeout' does not exist in type '{ headers?: HttpHeaders | Record<string, string | string[]> | undefined; context?: HttpContext | undefined; observe?: "body" | undefined; params?: HttpParams | ... 1 more ... | undefined; ... 9 more ...; transferCache?: boolean | ... 1 more ... | undefined; }'. [plugin angular-compiler]
TypeScript type definitions have not been updated to reflect it.
Code Example (from the documentation):
http.get('/api/config', {
timeout: 3000,
}).subscribe({
next: config => {
console.log('Config fetched successfully:', config);
},
error: err => {
// If the request times out, an error will have been emitted.
}
});Please provide a link to a minimal reproduction of the bug
https://stackblitz.com/edit/stackblitz-starters-tyswe3aa?file=src%2Fmain.ts
Please provide the exception or error you saw
ERROR TS2769: No overload matches this call.
The last overload gave the following error.
Object literal may only specify known properties, and 'timeout' does not exist in type '{ headers?: HttpHeaders | Record<string, string | string[]> | undefined; context?: HttpContext | undefined; observe?: "body" | undefined; params?: HttpParams | ... 1 more ... | undefined; ... 9 more ...; transferCache?: boolean | ... 1 more ... | undefined; }'. [plugin angular-compiler]
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 20.1.0
Node: 20.19.1
Package Manager: npm 10.8.2
OS: linux x64
Angular: 20.1.0
... animations, build, cli, common, compiler, compiler-cli, core
... forms, platform-browser, router
Package Version
------------------------------------------------------
@angular-devkit/architect 0.2001.0
@angular-devkit/core 20.1.0
@angular-devkit/schematics 20.1.0
@schematics/angular 20.1.0
rxjs 7.8.2
typescript 5.8.2
zone.js 0.15.0
Anything else?
No response