dedupe

Instructions

Implementation Reference

• src/index.ts:26-38 (helper)

  The `run` helper function that executes npm commands via execFile (promisified). It assembles arguments, sets timeout, and returns stdout/stderr.

  async function run(
    args: string[],
    cwd?: string,
  ): Promise<{ stdout: string; stderr: string }> {
    const fullArgs = [...args, ...npmrcArgs];
    const opts: { cwd?: string; timeout: number; env: NodeJS.ProcessEnv; maxBuffer: number } = {
      timeout: 120_000,
      maxBuffer: 10 * 1024 * 1024, // 10MB buffer for large outputs
      env: { ...process.env, NO_COLOR: "1" },
    };
    if (cwd) opts.cwd = cwd;
    return exec(NPM, fullArgs, opts);
  }

• src/index.ts:742-763 (handler)

  The handler function for the 'dedupe' tool. It runs `npm dedupe` (with optional --dry-run) and returns the output.

  // ── npm dedupe ──
  server.tool(
    "dedupe",
    "Reduce duplication in the dependency tree",
    {
      path: z.string().describe("Absolute path to the package directory"),
      dryRun: z.boolean().optional().describe("Preview changes without making them"),
    },
    async ({ path, dryRun }) => {
      const args = ["dedupe"];
      if (dryRun) args.push("--dry-run");
      try {
        const { stdout, stderr } = await run(args, path);
        return { content: [{ type: "text", text: stdout + stderr || "Deduplication complete" }] };
      } catch (e: any) {
        return {
          content: [{ type: "text", text: `Error: ${e.stderr || e.message}` }],
          isError: true,
        };
      }
    },
  );

• src/index.ts:743-749 (schema)

  Schema definition for the 'dedupe' tool: requires path (string), accepts optional dryRun (boolean).

  server.tool(
    "dedupe",
    "Reduce duplication in the dependency tree",
    {
      path: z.string().describe("Absolute path to the package directory"),
      dryRun: z.boolean().optional().describe("Preview changes without making them"),
    },

• src/index.ts:743-763 (registration)

  Registration of the 'dedupe' tool via server.tool() with its schema and handler.

  server.tool(
    "dedupe",
    "Reduce duplication in the dependency tree",
    {
      path: z.string().describe("Absolute path to the package directory"),
      dryRun: z.boolean().optional().describe("Preview changes without making them"),
    },
    async ({ path, dryRun }) => {
      const args = ["dedupe"];
      if (dryRun) args.push("--dry-run");
      try {
        const { stdout, stderr } = await run(args, path);
        return { content: [{ type: "text", text: stdout + stderr || "Deduplication complete" }] };
      } catch (e: any) {
        return {
          content: [{ type: "text", text: `Error: ${e.stderr || e.message}` }],
          isError: true,
        };
      }
    },
  );