ext-apps/examples/transcript-server/server.ts
Olivier Chafik 89a684546b
fix(examples): resolve DIST_DIR path for npm package execution (#277)
* fix(examples): resolve DIST_DIR path for npm package execution

When servers are compiled to dist/server.js and published to npm,
`import.meta.dirname` already points to dist/, so joining with "dist"
results in dist/dist/ which doesn't exist.

This fix detects whether we're running from TypeScript source or
compiled JavaScript and adjusts the path accordingly:
- From source (server.ts): use dist/ subdirectory
- From compiled (dist/server.js): use current directory

Fixes ENOENT errors like:
"ENOENT: no such file or directory, open '.../dist/dist/mcp-app.html'"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* fix(pdf-server): mark pdfjs-dist as external in bundle

The pdf.worker.mjs file wasn't being found when running from npm
because bun bundled pdfjs-dist but didn't include the worker file.

By marking pdfjs-dist as external, it uses the installed package
from node_modules at runtime where the worker is available.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-15 12:23:13 +00:00

86 lines
2.2 KiB
TypeScript

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import type {
CallToolResult,
ReadResourceResult,
} from "@modelcontextprotocol/sdk/types.js";
import fs from "node:fs/promises";
import path from "node:path";
import {
registerAppTool,
registerAppResource,
RESOURCE_MIME_TYPE,
RESOURCE_URI_META_KEY,
} from "@modelcontextprotocol/ext-apps/server";
// Works both from source (server.ts) and compiled (dist/server.js)
const DIST_DIR = import.meta.filename.endsWith(".ts")
? path.join(import.meta.dirname, "dist")
: import.meta.dirname;
const RESOURCE_URI = "ui://transcript/mcp-app.html";
/**
* Creates a new MCP server instance with tools and resources registered.
*/
export function createServer(): McpServer {
const server = new McpServer({
name: "Transcript Server",
version: "1.0.0",
});
// Register the transcribe tool - opens a UI for live speech transcription
registerAppTool(
server,
"transcribe",
{
title: "Transcribe Speech",
description:
"Opens a live speech transcription interface using the Web Speech API.",
inputSchema: {},
_meta: { [RESOURCE_URI_META_KEY]: RESOURCE_URI },
},
async (): Promise<CallToolResult> => {
return {
content: [
{
type: "text",
text: JSON.stringify({
status: "ready",
message: "Transcription UI opened. Speak into your microphone.",
}),
},
],
};
},
);
// Register the UI resource
registerAppResource(
server,
RESOURCE_URI,
RESOURCE_URI,
{ mimeType: RESOURCE_MIME_TYPE, description: "Transcript UI" },
async (): Promise<ReadResourceResult> => {
const html = await fs.readFile(
path.join(DIST_DIR, "mcp-app.html"),
"utf-8",
);
return {
contents: [
{
uri: RESOURCE_URI,
mimeType: RESOURCE_MIME_TYPE,
text: html,
_meta: {
ui: {
// Request microphone for Web Speech API, clipboard for copy button
permissions: { microphone: {}, clipboardWrite: {} },
},
},
},
],
};
},
);
return server;
}