[JacobLey]

Existing issue

With grace enabled and the default timeout: 0, a stale value is refreshed in the background, and that factory always gets gracedEntry: undefined. Only the foreground path passes the graced value (FactoryRunner.run(), the shouldSwr branch calls #runFactory without gracedValue).

timeout: 0 is the default, so this is the common stale-while-revalidate path. The docs present gracedEntry as available whenever a graced value exists. A factory can't tell it is only refreshing (e.g. to keep the stale value rather than refetch, or skip work another process is already doing).

Proposed fix

pass gracedValue in the background branch too.

Testing context

It appears the existing can access graced entry asserts inside the factory, which runs in the background under the default timeout. The failing assertion is thrown in the background and swallowed, and assert.plan(2) still counts it, so the test passes with or without the fix. The new test asserts outside the factory, and fails without the fix.

Typecheck and eslint pass.

Proposed patch for version bumping

[changeset-bot]

🦋 Changeset detected

Latest commit: 1e67fa9

The changes in this PR will be included in the next version bump.

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