Implement post comment mutation

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

@@ -0,0 +1,16 @@
+declare module "relay-runtime" {
+  export const ROOT_ID: string;
+}
+
+import { Environment, ROOT_ID } from "relay-runtime";
+
+export default function getMe(environment: Environment) {
+  const source = environment.getStore().getSource();
+  const root = source.get(ROOT_ID)!;
+  const meKey = Object.keys(root).find(s => s.startsWith("me("))!;
+  if (!root[meKey]) {
+    return null;
+  }
+  const meID = root[meKey].__ref;
+  return source.get(meID)!;
+}

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

@@ -0,0 +1 @@
+export { default as getMe } from "./getMe";