diff --git a/CHANGELOG.md b/CHANGELOG.md index 4997b655331c..5ac9e1680043 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -2,6 +2,8 @@ ### Features +- `[@jest/expect]` provide type of `actual` as a generic argument to `Matchers` to allow better-typed extensions (#TBD) + ### Fixes ### Chore & Maintenance diff --git a/packages/expect/src/types.ts b/packages/expect/src/types.ts index f3687b5597cb..3803d1e251b4 100644 --- a/packages/expect/src/types.ts +++ b/packages/expect/src/types.ts @@ -134,7 +134,7 @@ type PromiseMatchers = { resolves: Matchers> & Inverse>>; }; -export interface Matchers> { +export interface Matchers, T = unknown> { /** * Ensures the last call to a mock function was provided specific args. */ diff --git a/packages/jest-expect/src/types.ts b/packages/jest-expect/src/types.ts index 10739da8481e..d1ba64a7f66f 100644 --- a/packages/jest-expect/src/types.ts +++ b/packages/jest-expect/src/types.ts @@ -29,7 +29,7 @@ type Inverse = { not: Matchers; }; -type JestMatchers, T> = Matchers & +type JestMatchers, T> = Matchers & SnapshotMatchers; type PromiseMatchers = {