docs: add docs on Client IP

snippets/nuxt/server/utils/ProxiesConfig.ts

@@ -2,9 +2,9 @@
 import { arcjet as arcjetNuxt } from "#arcjet";
 
 export const arcjet = arcjetNuxt({
-  rules: [],
   proxies: [
-    "100.100.100.100", // A single IP
-    "100.100.100.0/24", // A CIDR for the range
+    "76.76.21.21", // An IP address.
+    "103.21.244.0/22", // A CIDR range of IP addresses.
   ],
+  rules: [],
 });

snippets/nuxt/server/utils/Service.ts

@@ -0,0 +1,10 @@
+// @ts-expect-error
+import { arcjet as arcjetNuxt } from "#arcjet";
+
+export const arcjet = arcjetNuxt({
+  // @ts-expect-error: TODO does not yet exist.
+  // Assumes `cloudflare` are the Cloudflare IP ranges from
+  // <https://docs.arcjet.com/concepts/client-ip#ip-ranges>.
+  proxies: [Object.fromEntries(cloudflare.map((d) => [d, "cf-connecting-ip"]))],
+  rules: [],
+});

snippets/nuxt/server/utils/TrustedIp.ts

@@ -0,0 +1,9 @@
+// @ts-expect-error
+import { arcjet as arcjetNuxt, slidingWindow } from "#arcjet";
+
+export const arcjet = arcjetNuxt({
+  // To illustrate, allow 3 requests per minute per IP address.
+  rules: [slidingWindow({ interval: 60, max: 3, mode: "LIVE" })],
+  // Assumes requests will have an `x-my-ip` header that you trust:
+  trustedIpHeader: "x-my-ip",
+});