(core) - filter network-only requests from the ssrExchange (#2198)

* filter network-only requests from the ssrExchange On the prior lines we defer clearing the data by a microtick which means that the redispatched "network-only" request will also be served from the ssr-cache. We could also opt to defer the redispatch by a microtick but imo it's better to treat network-only requests as bypassing this. Another possible solution would be to check whether we've seen this before as a `revalidation` * Create strong-islands-hope.md * formatting
urql-graphql · Jan 21, 2022 · c4a0ede · c4a0ede · mikehaertl · Sep 19, 2022
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diff --git a/.changeset/strong-islands-hope.md b/.changeset/strong-islands-hope.md
@@ -0,0 +1,5 @@
+---
+"@urql/core": patch
+---
+
+Filter `network-only` requests from the `ssrExchange`, this is to enable `staleWhileRevalidated` queries to successfully dispatch their queries
diff --git a/packages/core/src/exchanges/ssr.ts b/packages/core/src/exchanges/ssr.ts
@@ -135,7 +135,11 @@ export const ssrExchange = (params?: SSRExchangeParams): SSRExchange => {
     // it once, cachedOps$ needs to be merged after forwardedOps$
     let cachedOps$ = pipe(
       sharedOps$,
-      filter(operation => !!data[operation.key]),
+      filter(
+        operation =>
+          !!data[operation.key] &&
+          operation.context.requestPolicy !== 'network-only'
+      ),
       map(op => {
         const serialized = data[op.key]!;
         const result = deserializeResult(op, serialized, includeExtensions);