Add changeset

.changeset/two-fans-film.md

@@ -0,0 +1,19 @@
+---
+'formik': patch
+---
+
+Renames `unstable_StrictField` to `FastField` and thus deprecates `<FastField shouldUpdate>` prop. If you need this functionality, use `useFormikContext()` and `useField()` in a custom component wrapped in `React.memo()` instead. In addition, and this is breaking, `FastField` is no longer passed `form` object in any render prop.
+
+If you still need to access the `form` object in render use `FormikConsumer` like so:
+
+```diff
+- import { FastField } from 'formik'
++ import { FastField, FormikConsumer } from 'formik'
+
+<FastField name="firstName">
+- {({ field, meta, form }) => ( /* ... */ )}
++ {({ field, meta }) => (
++   <FormikConsumer>{form => /* ... */}</FormikConsumer>
++ )}
+</FastField>
+```