fix(dev): honour a bare --profile flag

Author: danielroe

packages/nuxt-cli/src/commands/dev.ts

@@ -177,9 +177,13 @@ const command = defineCommand({
       listenOverrides.port = takeover.port
     }
 
+    // `--profile` takes an optional value, so its presence rather than its
+    // truthiness is what says the profiler was asked for.
+    const profiling = ctx.args.profile !== undefined
+
     // With `SO_REUSEPORT` an incoming fork can bind the port before this process
     // releases it, so a hard restart never leaves the port unserved.
-    const reusePort = ctx.args.fork && !ctx.args.profile && await isReusePortSupported()
+    const reusePort = ctx.args.fork && !profiling && await isReusePortSupported()
     listenOverrides.reusePort = reusePort
 
     // The inspector belongs to whichever process is currently serving the app:
@@ -196,7 +200,7 @@ const command = defineCommand({
     })
 
     // Disable forking when profiling to capture all activity in one process
-    if (!ctx.args.fork || ctx.args.profile) {
+    if (!ctx.args.fork || profiling) {
       setupShortcuts({ listener, close, onReady, restart: () => reload({ type: 'shortcut' }) })
       setupSignalHandlers(close)
       return {

packages/nuxt-cli/src/dev/index.ts

@@ -130,12 +130,13 @@ export async function initialize(devContext: NuxtDevContext, ctx: InitializeOpti
   overrideEnv('development')
 
   const profileArg = devContext.args.profile
-  const perfValue = profileArg === 'verbose' ? true : profileArg ? 'quiet' : undefined
+  const profiling = profileArg !== undefined
+  const perfValue = profileArg === 'verbose' ? true : profiling ? 'quiet' : undefined
   const perfOverrides = perfValue
     ? { debug: { perf: perfValue } } as NuxtConfig
     : {}
 
-  if (profileArg) {
+  if (profiling) {
     await startCpuProfile()
   }
 
@@ -192,7 +193,7 @@ export async function initialize(devContext: NuxtDevContext, ctx: InitializeOpti
     console.debug(`Dev server (internal) initialized in ${Date.now() - start}ms`)
   }
 
-  if (profileArg) {
+  if (profiling) {
     for (const signal of [
       'exit',
       'SIGTERM' /* Graceful shutdown */,