Guardrails / nodejs

Package manager is pinned

nodejs/package-manager-pinned@v1

The manifest names the package manager and the exact version Corepack should install.

Id	nodejs/package-manager-pinned
Version	v1
Category	nodejs
Default severity	warning
Interpreter	python3
Timeout	30 seconds
Violations tolerated	0
Collects	nodejs

Collectors

This guardrail doesn't gather anything itself. It relies on the collectors below, which the CLI runs once per build before any check, and reads what they found from GUARDRAIL_FACTS. If a collector collects nothing, this guardrail is skipped, not failed.

Collector	Gathers	Inputs it is given
nodejs	The Node.js project in the project directory: its manifest, the Node version and package manager it asks for, every workspace it declares, the dependencies each manifest names and which of them are pinned, and the lock files committed beside them.	projectDir

The inputs above are this guardrail's own inputs, passed straight through to the collector. Setting one in buildnote.json changes what is collected, and two guardrails configured the same way share a single collection.

Configuration

{
  "guardrails": {
      "failOn": "error",
      "checks": [
          {
              "use": "nodejs/package-manager-pinned@v1",
              "severity": "warning",
              "with": {
                  "projectDir": "."
              },
              "exemptions": []
          }
      ]
  }
}

Inputs

Input	Description	Default	Environment variable
projectDir	Directory holding the project, relative to the directory the CLI runs in.	.	GUARDRAIL_INPUT_PROJECTDIR

How to fix

Name the package manager and its version in package.json. This is the version Corepack installs:

{
  "packageManager": "pnpm@9.1.0"
}

Without this field, or with a name but no version, the install runs under whichever npm, pnpm or yarn the runner happens to have. A lock file written by one package manager is then resolved by another, and the tree a developer reviewed is not the tree CI installs.

More in nodejs

• nodejs/lockfile-committed. The project commits a lock file, so an install of the same commit resolves the same versions.
• nodejs/single-package-manager. The project commits at most one lock file, so two package managers don't both try to manage the dependency tree.
• nodejs/version-declared. The project declares the Node.js version it is built and run against, and that version is no older than the configured floor.

All 4 nodejs guardrails