Make React 19 the default version for development

[jerelmiller]

Updates our dependencies and types so that React 19 is the default version

[changeset-bot]

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Latest commit: 554b45f

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[github-actions]

size-limit report 📦

Path	Size
dist/apollo-client.min.cjs	40.64 KB (+0.01% 🔺)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs"	50.02 KB (+0.01% 🔺)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/main.cjs" (production)	47.14 KB (+0.01% 🔺)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js"	36.14 KB (0%)
import { ApolloClient, InMemoryCache, HttpLink } from "dist/index.js" (production)	33.54 KB (0%)
import { ApolloProvider } from "dist/react/index.js"	1.26 KB (0%)
import { ApolloProvider } from "dist/react/index.js" (production)	1.24 KB (0%)
import { useQuery } from "dist/react/index.js"	5.21 KB (0%)
import { useQuery } from "dist/react/index.js" (production)	4.29 KB (0%)
import { useLazyQuery } from "dist/react/index.js"	5.7 KB (+0.02% 🔺)
import { useLazyQuery } from "dist/react/index.js" (production)	4.78 KB (+0.03% 🔺)
import { useMutation } from "dist/react/index.js"	3.62 KB (0%)
import { useMutation } from "dist/react/index.js" (production)	2.84 KB (0%)
import { useSubscription } from "dist/react/index.js"	4.42 KB (+0.05% 🔺)
import { useSubscription } from "dist/react/index.js" (production)	3.48 KB (+0.06% 🔺)
import { useSuspenseQuery } from "dist/react/index.js"	5.51 KB (+0.04% 🔺)
import { useSuspenseQuery } from "dist/react/index.js" (production)	4.17 KB (+0.05% 🔺)
import { useBackgroundQuery } from "dist/react/index.js"	5.01 KB (+0.02% 🔺)
import { useBackgroundQuery } from "dist/react/index.js" (production)	3.66 KB (+0.06% 🔺)
import { useLoadableQuery } from "dist/react/index.js"	5.09 KB (+0.04% 🔺)
import { useLoadableQuery } from "dist/react/index.js" (production)	3.74 KB (+0.06% 🔺)
import { useReadQuery } from "dist/react/index.js"	3.41 KB (0%)
import { useReadQuery } from "dist/react/index.js" (production)	3.35 KB (0%)
import { useFragment } from "dist/react/index.js"	2.36 KB (+0.05% 🔺)
import { useFragment } from "dist/react/index.js" (production)	2.31 KB (+0.09% 🔺)

[jerelmiller]

Turns out that react-dom/client was imported by RTL in our v17 tests which actually used the v18 import. When upgrading to v19, that import no longer works, presumably because its using the React 19 react-dom/client file, but with React 17 core.

This shim adds an entrypoint for react-dom/client that doesn't exist in 17 to satisfy the import path and avoid using the React 19 version. We throw to ensure the legacyRoot option is set in the tests though, which should be covered by the patch.

[phryneas]

Very good call!