chore(cli): remove --mcp option from trigger dev (#4246)

Author: carderne

.changeset/remove-dev-mcp-options.md

@@ -0,0 +1,5 @@
+---
+"trigger.dev": patch
+---
+
+Remove the legacy `--mcp` and `--mcp-port` options from the `dev` command. Run the dedicated `trigger mcp` command to start the Trigger.dev MCP server.

packages/cli-v3/package.json

@@ -56,7 +56,6 @@
     "@types/gradient-string": "^1.1.2",
     "@types/ini": "^4.1.1",
     "@types/object-hash": "3.0.6",
-    "@types/polka": "^0.5.7",
     "@types/react": "^18.2.48",
     "@types/resolve": "^1.20.6",
     "@types/rimraf": "^4.0.5",
@@ -133,7 +132,6 @@
     "p-retry": "^6.1.0",
     "partysocket": "^1.0.2",
     "pkg-types": "^1.1.3",
-    "polka": "^0.5.2",
     "resolve": "^1.22.8",
     "semver": "^7.5.0",
     "signal-exit": "^4.1.0",

packages/cli-v3/src/commands/dev.ts

@@ -59,8 +59,6 @@ const DevCommandOptions = CommonCommandOptions.extend({
   envFile: z.string().optional(),
   keepTmpFiles: z.boolean().default(false),
   maxConcurrentRuns: z.coerce.number().optional(),
-  mcp: z.boolean().default(false),
-  mcpPort: z.coerce.number().optional().default(3333),
   analyze: z.boolean().default(false),
   disableWarnings: z.boolean().default(false),
   skipMCPInstall: z.boolean().default(false),
@@ -101,8 +99,6 @@ export function configureDevCommand(program: Command) {
         "--keep-tmp-files",
         "Keep temporary files after the dev session ends, helpful for debugging"
       )
-      .option("--mcp", "Start the MCP server")
-      .option("--mcp-port", "The port to run the MCP server on", "3333")
       .addOption(
         new CommandOption("--analyze", "Analyze the build output and import timings").hideHelp()
       )

packages/cli-v3/src/dev/devSession.ts

@@ -23,7 +23,6 @@ import type { EphemeralDirectory } from "../utilities/tempDirectories.js";
 import { clearTmpDirs, getStoreDir, getTmpDir } from "../utilities/tempDirectories.js";
 import { startDevOutput } from "./devOutput.js";
 import { startWorkerRuntime } from "./devSupervisor.js";
-import { startMcpServer, stopMcpServer } from "./mcpServer.js";
 import { writeJSONFile } from "../utilities/fileSystem.js";
 import { join } from "node:path";
 
@@ -67,17 +66,6 @@ export async function startDevSession({
     dashboardUrl,
   });
 
-  if (rawArgs.mcp) {
-    await startMcpServer({
-      port: rawArgs.mcpPort,
-      cliApiClient: client,
-      devSession: {
-        dashboardUrl,
-        projectRef: rawConfig.project,
-      },
-    });
-  }
-
   const stopOutput = startDevOutput({
     name,
     branch,
@@ -237,7 +225,6 @@ export async function startDevSession({
       stopBundling?.().catch((error) => {});
       runtime.shutdown().catch((error) => {});
       stopOutput();
-      stopMcpServer();
     },
   };
 }