Unhide --live-reload and ensure only enabled in local mode (#2229)

.changeset/afraid-pigs-sneeze.md

@@ -0,0 +1,5 @@
+---
+"wrangler": patch
+---
+
+Unhide `--live-reload` option for local mode development

packages/wrangler/src/__tests__/dev.test.tsx

@@ -1208,6 +1208,7 @@ describe("wrangler dev", () => {
 			      --node-compat                                Enable node.js compatibility  [boolean]
 			      --persist                                    Enable persistence for local mode, using default path: .wrangler/state  [boolean]
 			      --persist-to                                 Specify directory to use for local persistence (implies --persist)  [string]
+			      --live-reload                                Auto reload HTML pages when change is detected in local mode  [boolean]
 			      --test-scheduled                             Test scheduled events by visiting /__scheduled in browser  [boolean] [default: false]
 			      --log-level                                  Specify logging level  [choices: \\"debug\\", \\"info\\", \\"log\\", \\"warn\\", \\"error\\", \\"none\\"] [default: \\"log\\"]",
 			  "warn": "",

packages/wrangler/src/dev.tsx

@@ -288,11 +288,20 @@ export function devOptions(yargs: Argv<CommonYargsOptions>): Argv<DevArgs> {
 				requiresArg: true,
 			})
 			.option("live-reload", {
-				// TODO: Add back in once we have remote `--live-reload`
-				hidden: true,
-				// describe: "Auto reload HTML pages when change is detected",
+				describe:
+					"Auto reload HTML pages when change is detected in local mode",
 				type: "boolean",
 			})
+			.check((argv) => {
+				const local = argv["local"] || argv["experimental-local"];
+				if (argv["live-reload"] && !local) {
+					throw new Error(
+						"--live-reload is only supported in local mode. " +
+							"Please enable either --local or --experimental-local."
+					);
+				}
+				return true;
+			})
 			.option("inspect", {
 				describe: "Enable dev tools",
 				type: "boolean",