Merge commit '3b583e1f45' as 'packages/mcp-typescript'

packages/mcp-typescript/.gitattributes

@@ -0,0 +1 @@
+dist/**/* linguist-generated=true

packages/mcp-typescript/.github/workflows/main.yml

@@ -0,0 +1,26 @@
+on:
+  push:
+    branches:
+      - main
+
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 18
+          cache: yarn
+
+      - run: yarn install --immutable
+      - run: yarn build
+
+      - name: Verify that `yarn build` did not change outputs
+        run: git diff --exit-code
+
+      - run: yarn test
+      - run: yarn lint

packages/mcp-typescript/.gitignore

@@ -0,0 +1,131 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+web_modules/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional stylelint cache
+.stylelintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+.parcel-cache
+
+# Next.js build output
+.next
+out
+
+# Nuxt.js build / generate output
+.nuxt
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and not Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+.temp
+.cache
+
+# Docusaurus cache and generated files
+.docusaurus
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+.vscode-test
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+.DS_Store

packages/mcp-typescript/README.md

@@ -0,0 +1,2 @@
+# mcp-typescript
+TypeScript implementation of the Model Context Protocol

packages/mcp-typescript/dist/cli.d.ts

@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=cli.d.ts.map

packages/mcp-typescript/dist/cli.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"cli.d.ts","sourceRoot":"","sources":["../src/cli.ts"],"names":[],"mappings":""}

packages/mcp-typescript/dist/cli.js

@@ -0,0 +1,119 @@
+import EventSource from "eventsource";
+import WebSocket from "ws";
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+global.EventSource = EventSource;
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+global.WebSocket = WebSocket;
+import express from "express";
+import { Client } from "./client/index.js";
+import { SSEClientTransport } from "./client/sse.js";
+import { Server } from "./server/index.js";
+import { SSEServerTransport } from "./server/sse.js";
+import { WebSocketClientTransport } from "./client/websocket.js";
+import { StdioClientTransport } from "./client/stdio.js";
+import { StdioServerTransport } from "./server/stdio.js";
+async function runClient(url_or_command, args) {
+    const client = new Client({
+        name: "mcp-typescript test client",
+        version: "0.1.0",
+    });
+    let clientTransport;
+    let url = undefined;
+    try {
+        url = new URL(url_or_command);
+    }
+    catch (_a) {
+        // Ignore
+    }
+    if ((url === null || url === void 0 ? void 0 : url.protocol) === "http:" || (url === null || url === void 0 ? void 0 : url.protocol) === "https:") {
+        clientTransport = new SSEClientTransport();
+        await clientTransport.connect(new URL(url_or_command));
+    }
+    else if ((url === null || url === void 0 ? void 0 : url.protocol) === "ws:" || (url === null || url === void 0 ? void 0 : url.protocol) === "wss:") {
+        clientTransport = new WebSocketClientTransport();
+        await clientTransport.connect(new URL(url_or_command));
+    }
+    else {
+        clientTransport = new StdioClientTransport();
+        await clientTransport.spawn({
+            command: url_or_command,
+            args,
+        });
+    }
+    console.log("Connected to server.");
+    await client.connect(clientTransport);
+    console.log("Initialized.");
+    await client.close();
+    console.log("Closed.");
+}
+async function runServer(port) {
+    if (port !== null) {
+        const app = express();
+        let servers = [];
+        app.get("/sse", async (req, res) => {
+            console.log("Got new SSE connection");
+            const transport = new SSEServerTransport("/message");
+            const server = new Server({
+                name: "mcp-typescript test server",
+                version: "0.1.0",
+            });
+            servers.push(server);
+            server.onclose = () => {
+                console.log("SSE connection closed");
+                servers = servers.filter((s) => s !== server);
+            };
+            await transport.connectSSE(req, res);
+            await server.connect(transport);
+        });
+        app.post("/message", async (req, res) => {
+            console.log("Received message");
+            const sessionId = req.query.sessionId;
+            const transport = servers
+                .map((s) => s.transport)
+                .find((t) => t.sessionId === sessionId);
+            if (!transport) {
+                res.status(404).send("Session not found");
+                return;
+            }
+            await transport.handlePostMessage(req, res);
+        });
+        app.listen(port, () => {
+            console.log(`Server running on http://localhost:${port}/sse`);
+        });
+    }
+    else {
+        const server = new Server({
+            name: "mcp-typescript test server",
+            version: "0.1.0",
+        });
+        const transport = new StdioServerTransport();
+        await transport.start();
+        await server.connect(transport);
+        console.log("Server running on stdio");
+    }
+}
+const args = process.argv.slice(2);
+const command = args[0];
+switch (command) {
+    case "client":
+        if (args.length < 2) {
+            console.error("Usage: client <server_url_or_command> [args...]");
+            process.exit(1);
+        }
+        runClient(args[1], args.slice(2)).catch((error) => {
+            console.error(error);
+            process.exit(1);
+        });
+        break;
+    case "server": {
+        const port = args[1] ? parseInt(args[1]) : null;
+        runServer(port).catch((error) => {
+            console.error(error);
+            process.exit(1);
+        });
+        break;
+    }
+    default:
+        console.error("Unrecognized command:", command);
+}
+//# sourceMappingURL=cli.js.map

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packages/mcp-typescript/dist/client/index.d.ts

@@ -0,0 +1,27 @@
+import { Protocol } from "../shared/protocol.js";
+import { Transport } from "../shared/transport.js";
+import { ClientNotification, ClientRequest, ClientResult, Implementation, ServerCapabilities } from "../types.js";
+/**
+ * An MCP client on top of a pluggable transport.
+ *
+ * The client will automatically begin the initialization flow with the server when connect() is called.
+ */
+export declare class Client extends Protocol<ClientRequest, ClientNotification, ClientResult> {
+    private _clientInfo;
+    private _serverCapabilities?;
+    private _serverVersion?;
+    /**
+     * Initializes this client with the given name and version information.
+     */
+    constructor(_clientInfo: Implementation);
+    connect(transport: Transport): Promise<void>;
+    /**
+     * After initialization has completed, this will be populated with the server's reported capabilities.
+     */
+    getServerCapabilities(): ServerCapabilities | undefined;
+    /**
+     * After initialization has completed, this will be populated with information about the server's name and version.
+     */
+    getServerVersion(): Implementation | undefined;
+}
+//# sourceMappingURL=index.d.ts.map

packages/mcp-typescript/dist/client/index.d.ts.map

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packages/mcp-typescript/dist/client/index.js

@@ -0,0 +1,51 @@
+import { Protocol } from "../shared/protocol.js";
+import { InitializeResultSchema, PROTOCOL_VERSION, } from "../types.js";
+/**
+ * An MCP client on top of a pluggable transport.
+ *
+ * The client will automatically begin the initialization flow with the server when connect() is called.
+ */
+export class Client extends Protocol {
+    /**
+     * Initializes this client with the given name and version information.
+     */
+    constructor(_clientInfo) {
+        super();
+        this._clientInfo = _clientInfo;
+    }
+    async connect(transport) {
+        await super.connect(transport);
+        const result = await this.request({
+            method: "initialize",
+            params: {
+                protocolVersion: 1,
+                capabilities: {},
+                clientInfo: this._clientInfo,
+            },
+        }, InitializeResultSchema);
+        if (result === undefined) {
+            throw new Error(`Server sent invalid initialize result: ${result}`);
+        }
+        if (result.protocolVersion !== PROTOCOL_VERSION) {
+            throw new Error(`Server's protocol version is not supported: ${result.protocolVersion}`);
+        }
+        this._serverCapabilities = result.capabilities;
+        this._serverVersion = result.serverInfo;
+        await this.notification({
+            method: "notifications/initialized",
+        });
+    }
+    /**
+     * After initialization has completed, this will be populated with the server's reported capabilities.
+     */
+    getServerCapabilities() {
+        return this._serverCapabilities;
+    }
+    /**
+     * After initialization has completed, this will be populated with information about the server's name and version.
+     */
+    getServerVersion() {
+        return this._serverVersion;
+    }
+}
+//# sourceMappingURL=index.js.map

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packages/mcp-typescript/dist/client/sse.d.ts

@@ -0,0 +1,20 @@
+import { Transport } from "../shared/transport.js";
+import { JSONRPCMessage } from "../types.js";
+/**
+ * Client transport for SSE: this will connect to a server using Server-Sent Events for receiving
+ * messages and make separate POST requests for sending messages.
+ *
+ * This uses the EventSource API in browsers. You can install the `eventsource` package for Node.js.
+ */
+export declare class SSEClientTransport implements Transport {
+    private _eventSource?;
+    private _endpoint?;
+    private _abortController?;
+    onclose?: () => void;
+    onerror?: (error: Error) => void;
+    onmessage?: (message: JSONRPCMessage) => void;
+    connect(url: URL): Promise<void>;
+    close(): Promise<void>;
+    send(message: JSONRPCMessage): Promise<void>;
+}
+//# sourceMappingURL=sse.d.ts.map

packages/mcp-typescript/dist/client/sse.d.ts.map

@@ -0,0 +1 @@
+{"version":3,"file":"sse.d.ts","sourceRoot":"","sources":["../../src/client/sse.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,SAAS,EAAE,MAAM,wBAAwB,CAAC;AACnD,OAAO,EAAE,cAAc,EAAwB,MAAM,aAAa,CAAC;AAEnE;;;;;GAKG;AACH,qBAAa,kBAAmB,YAAW,SAAS;IAClD,OAAO,CAAC,YAAY,CAAC,CAAc;IACnC,OAAO,CAAC,SAAS,CAAC,CAAM;IACxB,OAAO,CAAC,gBAAgB,CAAC,CAAkB;IAE3C,OAAO,CAAC,EAAE,MAAM,IAAI,CAAC;IACrB,OAAO,CAAC,EAAE,CAAC,KAAK,EAAE,KAAK,KAAK,IAAI,CAAC;IACjC,SAAS,CAAC,EAAE,CAAC,OAAO,EAAE,cAAc,KAAK,IAAI,CAAC;IAE9C,OAAO,CAAC,GAAG,EAAE,GAAG,GAAG,OAAO,CAAC,IAAI,CAAC;IAmD1B,KAAK,IAAI,OAAO,CAAC,IAAI,CAAC;IAMtB,IAAI,CAAC,OAAO,EAAE,cAAc,GAAG,OAAO,CAAC,IAAI,CAAC;CA0BnD"}

packages/mcp-typescript/dist/client/sse.js

@@ -0,0 +1,85 @@
+import { JSONRPCMessageSchema } from "../types.js";
+/**
+ * Client transport for SSE: this will connect to a server using Server-Sent Events for receiving
+ * messages and make separate POST requests for sending messages.
+ *
+ * This uses the EventSource API in browsers. You can install the `eventsource` package for Node.js.
+ */
+export class SSEClientTransport {
+    connect(url) {
+        return new Promise((resolve, reject) => {
+            this._eventSource = new EventSource(url.href);
+            this._abortController = new AbortController();
+            this._eventSource.onerror = (event) => {
+                var _a;
+                const error = new Error(`SSE error: ${JSON.stringify(event)}`);
+                reject(error);
+                (_a = this.onerror) === null || _a === void 0 ? void 0 : _a.call(this, error);
+            };
+            this._eventSource.onopen = () => {
+                // The connection is open, but we need to wait for the endpoint to be received.
+            };
+            this._eventSource.addEventListener("endpoint", (event) => {
+                var _a;
+                const messageEvent = event;
+                try {
+                    this._endpoint = new URL(messageEvent.data, url);
+                    if (this._endpoint.origin !== url.origin) {
+                        throw new Error(`Endpoint origin does not match connection origin: ${this._endpoint.origin}`);
+                    }
+                }
+                catch (error) {
+                    reject(error);
+                    (_a = this.onerror) === null || _a === void 0 ? void 0 : _a.call(this, error);
+                    void this.close();
+                    return;
+                }
+                resolve();
+            });
+            this._eventSource.onmessage = (event) => {
+                var _a, _b;
+                const messageEvent = event;
+                let message;
+                try {
+                    message = JSONRPCMessageSchema.parse(JSON.parse(messageEvent.data));
+                }
+                catch (error) {
+                    (_a = this.onerror) === null || _a === void 0 ? void 0 : _a.call(this, error);
+                    return;
+                }
+                (_b = this.onmessage) === null || _b === void 0 ? void 0 : _b.call(this, message);
+            };
+        });
+    }
+    async close() {
+        var _a, _b, _c;
+        (_a = this._abortController) === null || _a === void 0 ? void 0 : _a.abort();
+        (_b = this._eventSource) === null || _b === void 0 ? void 0 : _b.close();
+        (_c = this.onclose) === null || _c === void 0 ? void 0 : _c.call(this);
+    }
+    async send(message) {
+        var _a, _b;
+        if (!this._endpoint) {
+            throw new Error("Not connected");
+        }
+        try {
+            const response = await fetch(this._endpoint, {
+                method: "POST",
+                headers: {
+                    "Content-Type": "application/json",
+                },
+                body: JSON.stringify(message),
+                signal: (_a = this._abortController) === null || _a === void 0 ? void 0 : _a.signal,
+            });
+            if (!response.ok) {
+                const text = await response.text().catch(() => null);
+                throw new Error(`Error POSTing to endpoint (HTTP ${response.status}): ${text}`);
+            }
+        }
+        catch (error) {
+            (_b = this.onerror) === null || _b === void 0 ? void 0 : _b.call(this, error);
+            throw error;
+        }
+    }
+}
+//# sourceMappingURL=sse.js.map

packages/mcp-typescript/dist/client/sse.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"sse.js","sourceRoot":"","sources":["../../src/client/sse.ts"],"names":[],"mappings":"AACA,OAAO,EAAkB,oBAAoB,EAAE,MAAM,aAAa,CAAC;AAEnE;;;;;GAKG;AACH,MAAM,OAAO,kBAAkB;IAS7B,OAAO,CAAC,GAAQ;QACd,OAAO,IAAI,OAAO,CAAC,CAAC,OAAO,EAAE,MAAM,EAAE,EAAE;YACrC,IAAI,CAAC,YAAY,GAAG,IAAI,WAAW,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;YAC9C,IAAI,CAAC,gBAAgB,GAAG,IAAI,eAAe,EAAE,CAAC;YAE9C,IAAI,CAAC,YAAY,CAAC,OAAO,GAAG,CAAC,KAAK,EAAE,EAAE;;gBACpC,MAAM,KAAK,GAAG,IAAI,KAAK,CAAC,cAAc,IAAI,CAAC,SAAS,CAAC,KAAK,CAAC,EAAE,CAAC,CAAC;gBAC/D,MAAM,CAAC,KAAK,CAAC,CAAC;gBACd,MAAA,IAAI,CAAC,OAAO,qDAAG,KAAK,CAAC,CAAC;YACxB,CAAC,CAAC;YAEF,IAAI,CAAC,YAAY,CAAC,MAAM,GAAG,GAAG,EAAE;gBAC9B,+EAA+E;YACjF,CAAC,CAAC;YAEF,IAAI,CAAC,YAAY,CAAC,gBAAgB,CAAC,UAAU,EAAE,CAAC,KAAY,EAAE,EAAE;;gBAC9D,MAAM,YAAY,GAAG,KAAqB,CAAC;gBAE3C,IAAI,CAAC;oBACH,IAAI,CAAC,SAAS,GAAG,IAAI,GAAG,CAAC,YAAY,CAAC,IAAI,EAAE,GAAG,CAAC,CAAC;oBACjD,IAAI,IAAI,CAAC,SAAS,CAAC,MAAM,KAAK,GAAG,CAAC,MAAM,EAAE,CAAC;wBACzC,MAAM,IAAI,KAAK,CACb,qDAAqD,IAAI,CAAC,SAAS,CAAC,MAAM,EAAE,CAC7E,CAAC;oBACJ,CAAC;gBACH,CAAC;gBAAC,OAAO,KAAK,EAAE,CAAC;oBACf,MAAM,CAAC,KAAK,CAAC,CAAC;oBACd,MAAA,IAAI,CAAC,OAAO,qDAAG,KAAc,CAAC,CAAC;oBAE/B,KAAK,IAAI,CAAC,KAAK,EAAE,CAAC;oBAClB,OAAO;gBACT,CAAC;gBAED,OAAO,EAAE,CAAC;YACZ,CAAC,CAAC,CAAC;YAEH,IAAI,CAAC,YAAY,CAAC,SAAS,GAAG,CAAC,KAAY,EAAE,EAAE;;gBAC7C,MAAM,YAAY,GAAG,KAAqB,CAAC;gBAC3C,IAAI,OAAuB,CAAC;gBAC5B,IAAI,CAAC;oBACH,OAAO,GAAG,oBAAoB,CAAC,KAAK,CAAC,IAAI,CAAC,KAAK,CAAC,YAAY,CAAC,IAAI,CAAC,CAAC,CAAC;gBACtE,CAAC;gBAAC,OAAO,KAAK,EAAE,CAAC;oBACf,MAAA,IAAI,CAAC,OAAO,qDAAG,KAAc,CAAC,CAAC;oBAC/B,OAAO;gBACT,CAAC;gBAED,MAAA,IAAI,CAAC,SAAS,qDAAG,OAAO,CAAC,CAAC;YAC5B,CAAC,CAAC;QACJ,CAAC,CAAC,CAAC;IACL,CAAC;IAED,KAAK,CAAC,KAAK;;QACT,MAAA,IAAI,CAAC,gBAAgB,0CAAE,KAAK,EAAE,CAAC;QAC/B,MAAA,IAAI,CAAC,YAAY,0CAAE,KAAK,EAAE,CAAC;QAC3B,MAAA,IAAI,CAAC,OAAO,oDAAI,CAAC;IACnB,CAAC;IAED,KAAK,CAAC,IAAI,CAAC,OAAuB;;QAChC,IAAI,CAAC,IAAI,CAAC,SAAS,EAAE,CAAC;YACpB,MAAM,IAAI,KAAK,CAAC,eAAe,CAAC,CAAC;QACnC,CAAC;QAED,IAAI,CAAC;YACH,MAAM,QAAQ,GAAG,MAAM,KAAK,CAAC,IAAI,CAAC,SAAS,EAAE;gBAC3C,MAAM,EAAE,MAAM;gBACd,OAAO,EAAE;oBACP,cAAc,EAAE,kBAAkB;iBACnC;gBACD,IAAI,EAAE,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC;gBAC7B,MAAM,EAAE,MAAA,IAAI,CAAC,gBAAgB,0CAAE,MAAM;aACtC,CAAC,CAAC;YAEH,IAAI,CAAC,QAAQ,CAAC,EAAE,EAAE,CAAC;gBACjB,MAAM,IAAI,GAAG,MAAM,QAAQ,CAAC,IAAI,EAAE,CAAC,KAAK,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,CAAC;gBACrD,MAAM,IAAI,KAAK,CACb,mCAAmC,QAAQ,CAAC,MAAM,MAAM,IAAI,EAAE,CAC/D,CAAC;YACJ,CAAC;QACH,CAAC;QAAC,OAAO,KAAK,EAAE,CAAC;YACf,MAAA,IAAI,CAAC,OAAO,qDAAG,KAAc,CAAC,CAAC;YAC/B,MAAM,KAAK,CAAC;QACd,CAAC;IACH,CAAC;CACF"}

packages/mcp-typescript/dist/client/stdio.d.ts

@@ -0,0 +1,39 @@
+import { JSONRPCMessage } from "../types.js";
+import { Transport } from "../shared/transport.js";
+export type StdioServerParameters = {
+    /**
+     * The executable to run to start the server.
+     */
+    command: string;
+    /**
+     * Command line arguments to pass to the executable.
+     */
+    args?: string[];
+    /**
+     * The environment to use when spawning the process.
+     *
+     * The environment is NOT inherited from the parent process by default.
+     */
+    env?: object;
+};
+/**
+ * Client transport for stdio: this will connect to a server by spawning a process and communicating with it over stdin/stdout.
+ *
+ * This transport is only available in Node.js environments.
+ */
+export declare class StdioClientTransport implements Transport {
+    private _process?;
+    private _abortController;
+    private _readBuffer;
+    onclose?: () => void;
+    onerror?: (error: Error) => void;
+    onmessage?: (message: JSONRPCMessage) => void;
+    /**
+     * Spawns the server process and prepare to communicate with it.
+     */
+    spawn(server: StdioServerParameters): Promise<void>;
+    private processReadBuffer;
+    close(): Promise<void>;
+    send(message: JSONRPCMessage): Promise<void>;
+}
+//# sourceMappingURL=stdio.d.ts.map

packages/mcp-typescript/dist/client/stdio.d.ts.map

@@ -0,0 +1 @@
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packages/mcp-typescript/dist/client/stdio.js

@@ -0,0 +1,93 @@
+import { spawn } from "node:child_process";
+import { ReadBuffer, serializeMessage } from "../shared/stdio.js";
+/**
+ * Client transport for stdio: this will connect to a server by spawning a process and communicating with it over stdin/stdout.
+ *
+ * This transport is only available in Node.js environments.
+ */
+export class StdioClientTransport {
+    constructor() {
+        this._abortController = new AbortController();
+        this._readBuffer = new ReadBuffer();
+    }
+    /**
+     * Spawns the server process and prepare to communicate with it.
+     */
+    spawn(server) {
+        return new Promise((resolve, reject) => {
+            var _a, _b, _c, _d;
+            this._process = spawn(server.command, (_a = server.args) !== null && _a !== void 0 ? _a : [], {
+                // The parent process may have sensitive secrets in its env, so don't inherit it automatically.
+                env: server.env === undefined ? {} : { ...server.env },
+                stdio: ["pipe", "pipe", "inherit"],
+                signal: this._abortController.signal,
+            });
+            this._process.on("error", (error) => {
+                var _a, _b;
+                if (error.name === "AbortError") {
+                    // Expected when close() is called.
+                    (_a = this.onclose) === null || _a === void 0 ? void 0 : _a.call(this);
+                    return;
+                }
+                reject(error);
+                (_b = this.onerror) === null || _b === void 0 ? void 0 : _b.call(this, error);
+            });
+            this._process.on("spawn", () => {
+                resolve();
+            });
+            this._process.on("close", (_code) => {
+                var _a;
+                this._process = undefined;
+                (_a = this.onclose) === null || _a === void 0 ? void 0 : _a.call(this);
+            });
+            (_b = this._process.stdin) === null || _b === void 0 ? void 0 : _b.on("error", (error) => {
+                var _a;
+                (_a = this.onerror) === null || _a === void 0 ? void 0 : _a.call(this, error);
+            });
+            (_c = this._process.stdout) === null || _c === void 0 ? void 0 : _c.on("data", (chunk) => {
+                this._readBuffer.append(chunk);
+                this.processReadBuffer();
+            });
+            (_d = this._process.stdout) === null || _d === void 0 ? void 0 : _d.on("error", (error) => {
+                var _a;
+                (_a = this.onerror) === null || _a === void 0 ? void 0 : _a.call(this, error);
+            });
+        });
+    }
+    processReadBuffer() {
+        var _a, _b;
+        while (true) {
+            try {
+                const message = this._readBuffer.readMessage();
+                if (message === null) {
+                    break;
+                }
+                (_a = this.onmessage) === null || _a === void 0 ? void 0 : _a.call(this, message);
+            }
+            catch (error) {
+                (_b = this.onerror) === null || _b === void 0 ? void 0 : _b.call(this, error);
+            }
+        }
+    }
+    async close() {
+        this._abortController.abort();
+        this._process = undefined;
+        this._readBuffer.clear();
+    }
+    send(message) {
+        return new Promise((resolve) => {
+            var _a;
+            if (!((_a = this._process) === null || _a === void 0 ? void 0 : _a.stdin)) {
+                throw new Error("Not connected");
+            }
+            const json = serializeMessage(message);
+            if (this._process.stdin.write(json)) {
+                resolve();
+            }
+            else {
+                this._process.stdin.once("drain", resolve);
+            }
+        });
+    }
+}
+//# sourceMappingURL=stdio.js.map

packages/mcp-typescript/dist/client/stdio.js.map

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