(graphcache) - Expose data on write and writeOptimistic results (#613)

* Expose data on write and writeOptimistic results * Add changeset
urql-graphql · Mar 13, 2020 · 717b956 · 717b956
1 parent 4c1a9c2
commit 717b956
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diff --git a/.changeset/metal-otters-mate.md b/.changeset/metal-otters-mate.md
@@ -0,0 +1,5 @@
+---
+'@urql/exchange-graphcache': patch
+---
+
+Expose generated result data on writeOptimistic and passthrough data on write operations.
diff --git a/exchanges/graphcache/src/operations/write.ts b/exchanges/graphcache/src/operations/write.ts
@@ -37,6 +37,7 @@ import {
 } from './shared';
 
 export interface WriteResult {
+  data: null | Data;
   dependencies: Set<string>;
 }
 
@@ -59,7 +60,7 @@ export const startWrite = (
   data: Data
 ) => {
   const operation = getMainOperation(request.query);
-  const result: WriteResult = { dependencies: getCurrentDependencies() };
+  const result: WriteResult = { data, dependencies: getCurrentDependencies() };
   const operationName = store.rootFields[operation.operation];
 
   const ctx = makeContext(
@@ -75,7 +76,6 @@ export const startWrite = (
   }
 
   writeSelection(ctx, operationName, getSelectionSet(operation), data);
-
   return result;
 };
 
@@ -87,7 +87,10 @@ export const writeOptimistic = (
   initDataState(store.data, key, true);
 
   const operation = getMainOperation(request.query);
-  const result: WriteResult = { dependencies: getCurrentDependencies() };
+  const result: WriteResult = {
+    data: makeDict(),
+    dependencies: getCurrentDependencies(),
+  };
   const operationName = store.rootFields[operation.operation];
 
   invariant(
@@ -110,8 +113,7 @@ export const writeOptimistic = (
     true
   );
 
-  const data = makeDict();
-  writeSelection(ctx, operationName, getSelectionSet(operation), data);
+  writeSelection(ctx, operationName, getSelectionSet(operation), result.data!);
   clearDataState();
   return result;
 };