chore: update Dockerfile and CI configuration for Node 20, enhance pa…

.github/workflows/test.yml

@@ -8,8 +8,12 @@ on:
 
 jobs:
   test:
-    name: Run Unit Tests
+    name: Test (Node ${{ matrix.node-version }})
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [20.x, 22.x, 24.x]
 
     steps:
       - name: Checkout code
@@ -18,14 +22,16 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 24.x
+          node-version: ${{ matrix.node-version }}
           cache: "npm"
           cache-dependency-path: mcp-server/package-lock.json
 
       - name: Install dependencies
         working-directory: ./mcp-server
         run: npm ci
 
-      - name: Run tests
+      # Includes package-environments.integration.test.ts (ESM static import,
+      # CJS require of build/cjs, CJS dynamic import of ESM build).
+      - name: Build and run tests
         working-directory: ./mcp-server
         run: npm run test:run

Dockerfile

@@ -2,22 +2,23 @@
 # syntax=docker/dockerfile:1
 
 # Build stage
-FROM node:lts-alpine AS build
+FROM node:20-alpine AS build
 WORKDIR /app
 
 # Install dependencies
 COPY mcp-server/package.json mcp-server/package-lock.json ./
 RUN npm ci --production=false
 
 # Copy source code
-COPY mcp-server/tsconfig.json ./tsconfig.json
+COPY mcp-server/tsconfig.json mcp-server/tsconfig.cjs.json ./
+COPY mcp-server/scripts ./scripts
 COPY mcp-server/src ./src
 
 # Build the project
 RUN npm run build
 
 # Runtime stage
-FROM node:lts-alpine AS runtime
+FROM node:20-alpine AS runtime
 WORKDIR /app
 
 # Copy build artifacts and dependencies

mcp-server/package.json

@@ -15,17 +15,26 @@
   "bin": "./build/index.js",
   "version": "2.2.15",
   "description": "Currents MCP server",
-  "main": "index.js",
+  "main": "./build/cjs/api.js",
+  "module": "./build/api.js",
+  "types": "./build/api.d.ts",
+  "exports": {
+    ".": {
+      "types": "./build/api.d.ts",
+      "import": "./build/api.js",
+      "require": "./build/cjs/api.js"
+    }
+  },
   "scripts": {
-    "build": "tsc && chmod 755 build/index.js",
+    "build": "tsc && tsc -p tsconfig.cjs.json && node ./scripts/write-cjs-package-json.mjs && chmod 755 build/index.js",
     "publish:mcp": "npm run publish:npm",
     "publish:npm": "npm run rm  && npm run build && ./publish.cjs",
     "start": "node build/index.js",
     "rm": "rimraf dist",
     "test": "vitest",
     "test:ui": "vitest --ui",
-    "test:run": "vitest run",
-    "test:coverage": "vitest run --coverage",
+    "test:run": "npm run build && vitest run",
+    "test:coverage": "npm run build && vitest run --coverage",
     "release": "release-it",
     "release:dry": "release-it --dry-run"
   },
@@ -36,14 +45,18 @@
     "url": "https://github.com/currents-dev/currents-mcp.git"
   },
   "license": "Apache-2.0",
+  "engines": {
+    "node": ">=20"
+  },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.25.2",
+    "@modelcontextprotocol/sdk": "^1.28.0",
     "commander": "^12.1.0",
     "pino": "^9.9.5",
     "pino-pretty": "^13.1.1",
     "zod": "^4.3.5"
   },
   "devDependencies": {
+    "@types/node": "^20.19.0",
     "@release-it/conventional-changelog": "^10.0.0",
     "release-it": "^19.0.3",
     "rimraf": "^6.0.1",

mcp-server/scripts/write-cjs-package-json.mjs

@@ -0,0 +1,8 @@
+import { mkdirSync, writeFileSync } from "node:fs";
+import { join, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const root = join(dirname(fileURLToPath(import.meta.url)), "..");
+const cjsDir = join(root, "build", "cjs");
+mkdirSync(cjsDir, { recursive: true });
+writeFileSync(join(cjsDir, "package.json"), `${JSON.stringify({ type: "commonjs" })}\n`);

mcp-server/src/api.ts

@@ -0,0 +1 @@
+export { startMcpServer } from "./server.js";