[next] Implement Comment History Pagination (#2008)

* refactor: profile

* feat: add pagination to comment history

* feat: add getMeSourceID helper

* feat: update profile in CreateCommentMutation

* fix: clear query response cache on mutation

* test: add integration tests for profile

* test: add unit tests

src/core/client/framework/helpers/getMe.ts

@@ -1,11 +1,12 @@
-import { Environment, ROOT_ID } from "relay-runtime";
+import { Environment } from "relay-runtime";
+
+import getMeSourceID from "./getMeSourceID";
 
 export default function getMe(environment: Environment) {
   const source = environment.getStore().getSource();
-  const root = source.get(ROOT_ID)!;
-  if (!root.me) {
+  const meID = getMeSourceID(environment);
+  if (!meID) {
     return null;
   }
-  const meID = root.me.__ref;
   return source.get(meID)!;
 }

src/core/client/framework/helpers/getMeSourceID.ts

@@ -0,0 +1,10 @@
+import { Environment, ROOT_ID } from "relay-runtime";
+
+export default function getMeSourceID(environment: Environment): string | null {
+  const source = environment.getStore().getSource();
+  const root = source.get(ROOT_ID)!;
+  if (!root.me) {
+    return null;
+  }
+  return root.me.__ref;
+}

src/core/client/framework/helpers/index.ts

@@ -1,3 +1,4 @@
 export { default as getMe } from "./getMe";
+export { default as getMeSourceID } from "./getMeSourceID";
 export { default as getURLWithCommentID } from "./getURLWithCommentID";
 export { default as urls } from "./urls";