Turn on tail logs by default

.changeset/tricky-starfishes-tap.md

@@ -0,0 +1,7 @@
+---
+"wrangler": minor
+---
+
+We're soon going to make backend changes that mean that `wrangler dev --remote` sessions will no longer have an associated inspector connection. In advance of these backend changes, we've enabled a new `wrangler tail`-based logging strategy for `wrangler dev --remote`. For now, you can revert to the previous logging strategy with `wrangler dev --remote --no-x-tail-logs`, but in future it will not be possible to revert.
+
+The impact of this will be that logs that were previously available via devtools will now be provided directly to the Wrangler console and it will no longer be possible to interact with the remote Worker via the devtools console.

packages/wrangler/src/api/dev.ts

@@ -222,7 +222,7 @@ export async function unstable_dev(
 		enableContainers: options?.experimental?.enableContainers ?? false,
 		dockerPath,
 		containerEngine: options?.experimental?.containerEngine,
-		experimentalTailLogs: false,
+		experimentalTailLogs: true,
 	};
 
 	//outside of test mode, rebuilds work fine, but only one instance of wrangler will work at a time

packages/wrangler/src/api/startDevWorker/ProxyController.ts

@@ -401,11 +401,16 @@ export class ProxyController extends Controller {
 		// inspector endpoint.
 		const inVscodeJsDebugTerminal = !!process.env.VSCODE_INSPECTOR_OPTIONS;
 
-		return (
-			this.latestConfig?.dev.inspector !== false &&
-			!inVscodeJsDebugTerminal &&
-			!this.latestConfig?.experimental?.tailLogs
-		);
+		const shouldEnableInspector =
+			this.latestConfig?.dev.inspector !== false && !inVscodeJsDebugTerminal;
+
+		if (this.latestConfig?.dev.remote) {
+			// In `wrangler dev --remote`, only enable the inspector if the `--x-tail-logs` flag is disabled
+			return (
+				shouldEnableInspector && !this.latestConfig?.experimental?.tailLogs
+			);
+		}
+		return shouldEnableInspector;
 	}
 
 	// ******************

packages/wrangler/src/dev.ts

@@ -260,7 +260,8 @@ export const dev = createCommand({
 			alias: ["x-tail-logs"],
 			describe:
 				"Experimental: Get runtime logs for the remote worker via Workers Tails rather than the Devtools inspector",
-			default: false,
+			default: true,
+			hidden: true,
 		},
 	},
 	async validateArgs(args) {

packages/wrangler/src/dev/hotkeys.ts

@@ -9,7 +9,11 @@ import type { DevEnv } from "../api";
 
 export default function registerDevHotKeys(
 	devEnvs: DevEnv[],
-	args: { forceLocal?: boolean; experimentalTailLogs: boolean },
+	args: {
+		forceLocal?: boolean;
+		experimentalTailLogs: boolean;
+		remote: boolean;
+	},
 	render = true
 ) {
 	const primaryDevEnv = devEnvs[0];
@@ -28,7 +32,8 @@ export default function registerDevHotKeys(
 				label: "open devtools",
 				// Don't display this hotkey if we're in a VSCode debug session
 				disabled:
-					!!process.env.VSCODE_INSPECTOR_OPTIONS || args.experimentalTailLogs,
+					!!process.env.VSCODE_INSPECTOR_OPTIONS ||
+					(args.remote && args.experimentalTailLogs),
 				handler: async () => {
 					const { inspectorUrl } = await primaryDevEnv.proxy.ready.promise;
 

packages/wrangler/src/pages/dev.ts

@@ -951,7 +951,7 @@ export const pagesDevCommand = createCommand({
 					siteInclude: undefined,
 					siteExclude: undefined,
 					enableContainers: false,
-					experimentalTailLogs: false,
+					experimentalTailLogs: true,
 				})
 		);