[next] Support external config (#2088)

* fix: correctly determine expired token

* feat: support external config

* fix: lint

* fix: npm audit fix

src/core/client/framework/utils/areWeInIframe.ts

@@ -0,0 +1,10 @@
+/**
+ * Returns true if we are in an iframe.
+ */
+export default function areWeInIframe() {
+  try {
+    return window.self !== window.top;
+  } catch (e) {
+    return true;
+  }
+}

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

@@ -1,3 +1,4 @@
 export { default as buildURL } from "./buildURL";
 export { default as parseURL } from "./parseURL";
 export { default as modifyQuery } from "./modifyQuery";
+export { default as areWeInIframe } from "./areWeInIframe";