Fix dependencies: Add flag-icons, tailwind directives, and postcss config

node_modules/search-insights/lib/utils/featureDetection.ts

@@ -0,0 +1,43 @@
+export const supportsCookies = (): boolean => {
+  try {
+    return Boolean(navigator.cookieEnabled);
+  } catch (e) {
+    return false;
+  }
+};
+
+export const supportsSendBeacon = (): boolean => {
+  try {
+    return Boolean(navigator.sendBeacon);
+  } catch (e) {
+    return false;
+  }
+};
+
+export const supportsXMLHttpRequest = (): boolean => {
+  try {
+    return Boolean(XMLHttpRequest);
+  } catch (e) {
+    return false;
+  }
+};
+
+export const supportsNodeHttpModule = (): boolean => {
+  try {
+    /* eslint-disable @typescript-eslint/no-var-requires */
+    const { request: nodeHttpRequest } = require("http");
+    const { request: nodeHttpsRequest } = require("https");
+    /* eslint-enable */
+    return Boolean(nodeHttpRequest) && Boolean(nodeHttpsRequest);
+  } catch (e) {
+    return false;
+  }
+};
+
+export const supportsNativeFetch = (): boolean => {
+  try {
+    return fetch !== undefined;
+  } catch (e) {
+    return false;
+  }
+};