node.py•1.73 kB
"""Node runtime implementation."""
import shutil
from pathlib import Path
from mcp_local_dev.types import Runtime, PackageManager, RuntimeConfig, Sandbox
from mcp_local_dev.sandboxes.commands import install_packages
from mcp_local_dev.sandboxes.sandbox import add_package_manager_bin_path
CONFIG = RuntimeConfig(
name=Runtime.NODE,
config_files=["package.json"],
package_manager=PackageManager.NPM,
env_setup={"NODE_NO_WARNINGS": "1"},
binary_name="node",
)
async def setup_node(sandbox: Sandbox) -> None:
"""Set up Node runtime environment."""
# Verify and symlink node and npm
node_path = shutil.which('node')
if not node_path:
raise RuntimeError("Required runtime not found: node")
npm_path = shutil.which('npm')
if not npm_path:
raise RuntimeError("Required package manager not found: npm")
# Symlink node
node_target = sandbox.bin_dir / 'node'
if not node_target.exists():
node_target.symlink_to(node_path)
# Symlink npm and npx
npm_target = sandbox.bin_dir / 'npm'
if not npm_target.exists():
npm_target.symlink_to(npm_path)
npx_path = shutil.which('npx')
if not npx_path:
raise RuntimeError("Required package manager not found: npx")
npx_target = sandbox.bin_dir / 'npx'
if not npx_target.exists():
npx_target.symlink_to(npx_path)
# Set up environment variables
for key, value in CONFIG.env_setup.items():
sandbox.env_vars[key] = value
# Add package manager bin paths before installing packages
add_package_manager_bin_path(sandbox, CONFIG.package_manager)
# Install project dependencies
await install_packages(sandbox, CONFIG.package_manager)