arch: move web folder into api & move api to top level

frontend/src/shared/utils/cache.ts

@@ -0,0 +1,33 @@
+import { DataProxy } from '@apollo/client';
+import { DocumentNode } from 'graphql';
+
+type UpdateCacheFn<T> = (cache: T) => T;
+
+export function updateApolloCache<T>(
+  client: DataProxy,
+  document: DocumentNode,
+  update: UpdateCacheFn<T>,
+  variables?: object,
+) {
+  let queryArgs: DataProxy.Query<any>;
+  if (variables) {
+    queryArgs = {
+      query: document,
+      variables,
+    };
+  } else {
+    queryArgs = {
+      query: document,
+    };
+  }
+  const cache: T | null = client.readQuery(queryArgs);
+  if (cache) {
+    const newCache = update(cache);
+    client.writeQuery({
+      ...queryArgs,
+      data: newCache,
+    });
+  }
+}
+
+export default updateApolloCache;