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Implement fetchLater (#39547)

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Allows fetches to be deferred, only in a secure context. It does not yet
implement quota computation, since we don't have a concept of document
quota yet.

Also update the `fetch/api/idlharness` test to run in a secure context,
since this API is only available there.

Positive Mozilla position:
https://github.com/mozilla/standards-positions/issues/703
Positive WebKit position:
https://github.com/WebKit/standards-positions/issues/85

Closes whatwg/fetch#1858

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
This commit is contained in:
Tim van der Lippe 2025-10-02 09:51:19 +02:00 • committed by GitHub
parent 19c498af16
commit 680a780552
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39 changed files with 403 additions and 228 deletions
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2
components/script_bindings/codegen/Bindings.conf
View file

@ -659,7 +659,7 @@ DOMInterfaces = {
},
'Window': {
'canGc': ['CreateImageBitmap', 'CreateImageBitmap_', 'CookieStore', 'Fetch', 'Open', 'SetInterval', 'SetTimeout', 'Stop', 'TrustedTypes', 'WebdriverCallback', 'WebdriverException'],
'canGc': ['CreateImageBitmap', 'CreateImageBitmap_', 'CookieStore', 'Fetch', 'FetchLater', 'Open', 'SetInterval', 'SetTimeout', 'Stop', 'TrustedTypes', 'WebdriverCallback', 'WebdriverException'],
'inRealms': ['Fetch', 'GetOpener', 'WebdriverCallback', 'WebdriverException'],
'additionalTraits': ['crate::interfaces::WindowHelpers'],
},

9
components/script_bindings/webidls/FetchLaterResult.webidl Normal file
View file

@ -0,0 +1,9 @@
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
// https://fetch.spec.whatwg.org/#fetch-method
[Exposed=Window]
interface FetchLaterResult {
readonly attribute boolean activated;
};

9
components/script_bindings/webidls/Window.webidl
View file

@ -189,3 +189,12 @@ partial interface Window {
dictionary WindowPostMessageOptions : StructuredSerializeOptions {
USVString targetOrigin = "/";
};
// https://fetch.spec.whatwg.org/#fetch-method
dictionary DeferredRequestInit : RequestInit {
DOMHighResTimeStamp activateAfter;
};
partial interface Window {
[NewObject, SecureContext, Throws] FetchLaterResult fetchLater(RequestInfo input, optional DeferredRequestInit init = {});
};