docker build fails for all 4 TypeScript servers: npm install crashes with "Cannot read properties of null (reading 'edgesOut')"

[Ashfaqbs]

Describe the bug

docker build -f src/<server>/Dockerfile . currently fails at the npm install step for all four TypeScript servers (everything, filesystem, memory, sequentialthinking), with:

npm error Cannot read properties of null (reading 'edgesOut')

Reproduced on unmodified main (verified against a fresh git archive upstream/main) with a fully cleared build cache (docker builder prune -f + --no-cache), so this isn't stale-cache-mount noise.

Root cause (bisected)

Installing just the everything server's runtime dependencies succeeds:

{
  "dependencies": {
    "@modelcontextprotocol/sdk": "^1.30.0",
    "cors": "^2.8.5",
    "express": "^5.2.1",
    "jszip": "^3.10.1",
    "zod": "^4.0.0"
  }
}

Adding the devDependencies back reproduces the crash:

{
  "devDependencies": {
    "@types/cors": "^2.8.19",
    "@types/express": "^5.0.6",
    "@vitest/coverage-v8": "^4.1.8",
    "prettier": "^2.8.8",
    "shx": "^0.4.0",
    "typescript": "^5.6.2",
    "vitest": "^4.1.8"
  }
}

I didn't bisect further within the dev set (my money's on @vitest/coverage-v8's dependency tree, since that's a common trigger for this class of npm arborist bug, but haven't confirmed which specific package). Since the four Dockerfiles' builder stages all run a plain npm install (not --omit-dev/--production), all four hit the same dev-dependency resolution and fail identically — confirmed for everything and filesystem directly; memory and sequentialthinking share the same builder pattern and dependency shape so are very likely affected too.

A minimal npm install with just express on the same base image (node:22.12-alpine, npm 10.9.0) succeeds fine, so this isn't a generic npm/Alpine/environment problem — it's specific to this dependency graph.

To Reproduce

git clone https://github.com/modelcontextprotocol/servers
cd servers
docker build -f src/everything/Dockerfile .
# or: docker build -f src/filesystem/Dockerfile .

Expected behavior

docker build succeeds per the commands documented in each server's README.

Environment

• Docker Desktop 29.7.2, Windows
• Base image: node:22.12-alpine (bundled npm 10.9.0)
• Reproduced on main as of this report

🤖 Generated with Claude Code