Build(deps): Bump @apollo/client from 3.0.0-beta.49 to 3.3.20

[dependabot-preview]

Bumps @apollo/client from 3.0.0-beta.49 to 3.3.20.

Release notes

Sourced from @​apollo/client's releases.

3.3.0

Apollo Client 3.3.0

Bug Fixes

• Update @wry/equality to consider undefined properties equivalent to missing properties. @​benjamn in #7108

• Prevent memory leaks involving unused onBroadcast function closure created in ApolloClient constructor. @​kamilkisiela in #7161

• Provide default empty cache object for root IDs like ROOT_QUERY, to avoid differences in behavior before/after ROOT_QUERY data has been written into InMemoryCache. @​benjamn in #7100

• Cancel queryInfo.notifyTimeout in QueryInfo#markResult to prevent unnecessary network requests when using a FetchPolicy of cache-and-network or network-only in a React component with multiple useQuery calls. @​benjamn in #7347

Potentially breaking changes

• Ensure cache.readQuery and cache.readFragment always return TData | null, instead of throwing MissingFieldError exceptions when missing fields are encountered. @​benjamn in #7098

  Since this change converts prior exceptions to null returns, and since null was already a possible return value according to the TData | null return type, we are confident this change will be backwards compatible (as long as null was properly handled before).

• HttpLink will now automatically strip any unused variables before sending queries to the GraphQL server, since those queries are very likely to fail validation, according to the All Variables Used rule in the GraphQL specification. If you depend on the preservation of unused variables, you can restore the previous behavior by passing includeUnusedVariables: true to the HttpLink constructor (which is typically passed as options.link to the ApolloClient constructor). @​benjamn in #7127

• Ensure MockLink (used by MockedProvider) returns mock configuration errors (e.g. No more mocked responses for the query ...) through the Link's Observable, instead of throwing them. These errors are now available through the error property of a result. @​hwillson in #7110

  Returning mock configuration errors through the Link's Observable was the default behavior in Apollo Client 2.x. We changed it for 3, but the change has been problematic for those looking to migrate from 2.x to 3. We've decided to change this back with the understanding that not many people want or are relying on MockLink's throwing exception approach. If you want to change this functionality, you can define custom error handling through MockLink.setOnError.

• Unsubscribing the last observer from an ObservableQuery will once again unsubscribe from the underlying network Observable in all cases, as in Apollo Client 2.x, allowing network requests to be cancelled by unsubscribing. @​javier-garcia-meteologica in #7165 and #7170.

• The independent QueryBaseOptions and ModifiableWatchQueryOptions interface supertypes have been eliminated, and their fields are now defined by QueryOptions. @​DCtheTall in #7136

• Internally, Apollo Client now avoids nested imports from the graphql package, importing everything from the top-level package instead. For example,

  import { visit } from "graphql/language/visitor"

  is now just

  import { visit } from "graphql"

  Since the graphql package uses .mjs modules, your bundler may need to be configured to recognize .mjs files as ECMAScript modules rather than CommonJS modules. @​benjamn in #7185

Improvements

• Support inheritance of type and field policies, according to possibleTypes.

... (truncated)

Changelog

Sourced from @​apollo/client's changelog.

Apollo Client 3.3.20

Bug fixes

• Fix policy merging bug when calling cache.policies.addTypePolicies multiple times for the same type policy. @​Banou26 in #8361

Apollo Client 3.3.19

Bug fixes

• Use export ... from syntax to re-export graphql-tag named exports, making tree-shaking easier for some bundlers. @​benjamn in #8221

Documentation

• Replace Spectrum references with community.apollographql.com. @​hwillson in #8238

Apollo Client 3.3.18

Bug fixes

• Add "sideEffects": false to all generated/published package.json files, to improve dead code elimination for nested entry points like @apollo/client/cache. @​benjamn in #8213

Apollo Client 3.3.17

Bug fixes

• Make useReactiveVar(rv) recheck the latest rv() value in its useEffect callback, and immediately update state if the value has already changed, rather than calling rv.onNextChange(setValue) to listen for future changes. @​benjamn in #8135

Apollo Client 3.3.16

Bug fixes

• Prevent undefined mutation result in useMutation. @​jcreighton in #8018

• Fix useReactiveVar not rerendering for successive synchronous calls. @​brainkim in #8022

• Support batchDebounce option for BatchLink and BatchHttpLink. @​dannycochran in #8024

Apollo Client 3.3.15

Bug fixes

... (truncated)

Commits

• ae32992 Bump @​apollo/client npm version to 3.3.20.
• b6c18b2 Fix merging of toBeAdded type policies (#8361)
• fc6f729 chore(deps): update dependency @​wry/equality to ^0.5.0
• eed395e chore(deps): update dependency @​types/node to v15.12.1
• d287ad6 Merge pull request #8352 from apollographql/sb/gs-clarifications
• 9f776ff Clarify language in getting started
• 67fe4e8 chore(deps): update circleci/node docker tag to v16 (#8323)
• 044ffd5 chore(deps): update dependency gatsby-theme-apollo-docs to v4.7.9
• 4e50948 Update react-dom to version 17.0.2.
• 4fb1ea2 chore(deps): update dependency react to v17.0.2 (#7909)
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[dependabot-preview]

Superseded by #631.