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Work around tsx watch hang on Windows in quickstart (#428)

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On Windows, `tsx watch` can hang when running under `concurrently` due
to stdin handling conflicts (see [privatenumber/tsx#623][]). Adding the
`--raw` flag to `concurrently` avoids this by preventing stdin
interception.

Since `--raw` mode disables concurrently's automatic output prefixing, a
custom Vite logger is added to prefix messages with `[vite]` so users
can still distinguish which process produced each line of output.

[privatenumber/tsx#623]: https://github.com/privatenumber/tsx/issues/623

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Jonathan Hefner 2026-03-06 08:32:30 -06:00 • committed by GitHub
commit c000ba6dd5
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2 changed files with 19 additions and 5 deletions
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2
examples/quickstart/package.json
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@ -12,7 +12,7 @@
"license": "MIT",
"scripts": {
"build": "tsc --noEmit && tsc -p tsconfig.server.json && cross-env INPUT=mcp-app.html vite build",
"start": "concurrently \"cross-env NODE_ENV=development INPUT=mcp-app.html vite build --watch\" \"tsx watch main.ts\""
"start": "concurrently --raw \"cross-env NODE_ENV=development INPUT=mcp-app.html vite build --watch\" \"tsx watch main.ts\""
},
"dependencies": {
"@modelcontextprotocol/ext-apps": "^1.0.0",

9
examples/quickstart/vite.config.ts
View file

@ -1,4 +1,4 @@
import { defineConfig } from "vite";
import { createLogger, defineConfig } from "vite";
import { viteSingleFile } from "vite-plugin-singlefile";
const INPUT = process.env.INPUT;
@ -8,7 +8,14 @@ if (!INPUT) {
const isDevelopment = process.env.NODE_ENV === "development";
const prefixedLogger = createLogger();
for (const level of ["info", "warn", "error"] as const) {
const fn = prefixedLogger[level];
prefixedLogger[level] = (msg, opts) => fn(msg.replace(/^/mg, "[vite] "), opts);
}
export default defineConfig({
customLogger: prefixedLogger,
plugins: [viteSingleFile()],
build: {
sourcemap: isDevelopment ? "inline" : undefined,