Fix broken default command

CHANGELOG.md

@@ -1 +1,2 @@
 - Added default value for `emulators.dataconnect.dataDir` to `init dataconnect`.
+- Fixed an issue where `firebase` would error out instead of displaying help text.

src/bin/firebase.ts

@@ -2,11 +2,11 @@
 
 // Check for older versions of Node no longer supported by the CLI.
 import * as semver from "semver";
 const pkg = require("../../package.json");
 const nodeVersion = process.version;
 if (!semver.satisfies(nodeVersion, pkg.engines.node)) {
   console.error(
     `Firebase CLI v${pkg.version} is incompatible with Node.js ${nodeVersion} Please upgrade Node.js to version ${pkg.engines.node}`,
   );
   process.exit(1);
 }
@@ -14,9 +14,9 @@
 import * as updateNotifierPkg from "update-notifier-cjs";
 import * as clc from "colorette";
 import { markedTerminal } from "marked-terminal";
 const updateNotifier = updateNotifierPkg({ pkg });
 import { marked } from "marked";
 marked.use(markedTerminal() as any);
 
 import { CommanderStatic } from "commander";
 import { join } from "node:path";
@@ -33,7 +33,7 @@
 import * as utils from "../utils";
 import * as winston from "winston";
 
-let args = process.argv.slice(2);
+const args = process.argv.slice(2);
 let cmd: CommanderStatic;
 
 function findAvailableLogFile(): string {
@@ -161,11 +161,10 @@
 });
 
 if (!handlePreviewToggles(args)) {
-  cmd = client.cli.parse(process.argv);
-
-  // determine if there are any non-option arguments. if not, display help
-  args = args.filter((arg) => !arg.includes("-"));
+  // determine if there are any arguments. if not, display help
   if (!args.length) {
     client.cli.help();
+  } else {
+    cmd = client.cli.parse(process.argv);
   }
 }