@apollo/client

4.3.5 · 19 Oct 2026MIT5.3M / weekRepository Homepage npm Atom feed

Same major only

1 release in betweenevery note read

Other targets from 4.2.12Newest 4.x, Latest4.3.5

2
changes to make: 0
advisories fixed: 18
new: 17
fixes

Before you upgrade

Tick each one off as you go

Remove the optional modifier from the variables property provided to the update function in client.mutate and useMutation. variables is always a defined object, even when variables are not provided to the mutation.
breaking4.3.0
Mark skip as deprecated in useQuery and useSubscription now that both of these hooks support skipToken.
deprecated4.3.0

Release by release

4.3.0
11 Sep 202618 new · 17 fixes
- new
  Field policies and inputObjects can now tell the cache whether a field is a list of scalars or a scalar whose value is an array. Previously all arrays were iterated and only the inner type was provided to the scalar parse/serialize functions.
- new
  Adds Scalar.fromGraphQLScalarType helper to create a Scalar instance from an existing graphql.js GraphQLScalarType.
- new
  The minimum supported TypeScript version is now 5.9.x.
- new
  Adds the plumbing and types implementation for declaring custom scalars and configuring custom scalars in InMemoryCache.

Upgrade to 4.3.0

npm install @apollo/client@4.3.0

What 4.3.0 needs

Reading 4.3.0's manifest…

Check against your package.json

Which of your other dependencies stand in the way of 4.3.0. Read once, not stored.

After upgrading

Run the type checker, the linter and the tests.
Build, and look for new deprecation warnings.
Update peer dependencies the new version asks for.