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@urql/exchange-persisted-fetch
Advanced tools
An exchange that allows for persisted queries support when fetching queries
The persistedFetchExchange
is an exchange that builds on the regular fetchExchange
but adds support for Persisted Queries.
First install @urql/exchange-persisted-fetch
alongside urql
:
yarn add @urql/exchange-persisted-fetch
# or
npm install --save @urql/exchange-persisted-fetch
You'll then need to add the persistedFetchExchange
method, that this package exposes,
to your exchanges
.
import { createClient, dedupExchange, fetchExchange, cacheExchange } from 'urql';
import { persistedFetchExchange } from '@urql/exchange-persisted-fetch';
const client = createClient({
url: 'http://localhost:1234/graphql',
exchanges: [
dedupExchange,
cacheExchange,
persistedFetchExchange({
/* optional config */
}),
fetchExchange,
],
});
The persistedQueryExchange
supports three configuration options:
preferGetForPersistedQueries
: Use GET
for fetches with persisted queriesenforcePersistedQueries
: This disables automatic persisted queries and disables any retry
logic for how the API responds to persisted queries. Instead it's assumed that they'll always
succeed.generateHash
: A function that takes a GraphQL query and returns the hashed result. This defaults to the window.crypto
API in the browser and the crypto
module in node.The persistedFetchExchange
only handles queries, so for mutations we keep the
fetchExchange
around alongside of it.
If you want to generate hashes at build-time you can use a webpack-loader to achieve this, when using this all you need to do in this exchange is the following:
import { createClient, dedupExchange, fetchExchange, cacheExchange } from 'urql';
import { persistedFetchExchange } from '@urql/exchange-persisted-fetch';
const client = createClient({
url: 'http://localhost:1234/graphql',
exchanges: [
dedupExchange,
cacheExchange,
persistedFetchExchange({
generateHash: (_, document) => document.documentId,
}),
fetchExchange,
],
});
FAQs
An exchange that allows for persisted queries support when fetching queries
The npm package @urql/exchange-persisted-fetch receives a total of 5,294 weekly downloads. As such, @urql/exchange-persisted-fetch popularity was classified as popular.
We found that @urql/exchange-persisted-fetch demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 24 open source maintainers collaborating on the project.
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