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fix startup of webclient through cli #604

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Merged
merged 2 commits into from
Jul 10, 2025
Merged

fix startup of webclient through cli #604

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6a66ca5
fix startup of webclient through cli
cliffhall Jul 10, 2025
0eebd01
Remove environment-related startup vars. Those will be captured by st…
cliffhall Jul 10, 2025
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56 changes: 7 additions & 49 deletions cli/src/cli.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -50,71 +50,29 @@ function delay(ms: number): Promise<void> {
}

async function runWebClient(args: Args): Promise<void> {
const inspectorServerPath = resolve(
__dirname,
"../../",
"server",
"build",
"index.js",
);

// Path to the client entry point
const inspectorClientPath = resolve(
__dirname,
"../../",
"client",
"bin",
"client.js",
"start.js",
);

const CLIENT_PORT: string = process.env.CLIENT_PORT ?? "6274";
const SERVER_PORT: string = process.env.SERVER_PORT ?? "6277";

console.log("Starting MCP inspector...");

const abort = new AbortController();
let cancelled: boolean = false;
process.on("SIGINT", () => {
cancelled = true;
abort.abort();
});

let server: ReturnType<typeof spawnPromise>;
let serverOk: unknown;

try {
server = spawnPromise(
"node",
[
inspectorServerPath,
...(args.command ? [`--env`, args.command] : []),
...(args.args ? [`--args=${args.args.join(" ")}`] : []),
],
{
env: {
...process.env,
PORT: SERVER_PORT,
MCP_ENV_VARS: JSON.stringify(args.envArgs),
},
signal: abort.signal,
echoOutput: true,
},
);

// Make sure server started before starting client
serverOk = await Promise.race([server, delay(2 * 1000)]);
} catch (error) {}

if (serverOk) {
try {
await spawnPromise("node", [inspectorClientPath], {
env: { ...process.env, PORT: CLIENT_PORT },
signal: abort.signal,
echoOutput: true,
});
} catch (e) {
if (!cancelled || process.env.DEBUG) throw e;
}
await spawnPromise("node", [inspectorClientPath], {
signal: abort.signal,
echoOutput: true,
});
} catch (e) {
if (!cancelled || process.env.DEBUG) throw e;
}
}

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