dependency-upgrade

What this skill does

# Dependency Upgrade

## Related Skills

- **sap-hana-cli**: For dependency-aware database tooling workflows and upgrade guidance
- **sap-cap-capire**: For CAP dependency-safe runtime and service configuration guidance
- **sap-fiori-tools**: For secure UI5/Fiori dependency strategy when tooling touches frontend packages

Manage dependency upgrades with supply chain security, compatibility analysis, staged rollout, and comprehensive testing across all major package managers.

## When to Use This Skill

- Upgrading major framework or library versions
- Configuring supply chain attack prevention (cooldown, script blocking, lockfile hardening)
- Setting up secure package manager configuration
- Resolving dependency conflicts or peer dependency issues
- Planning incremental upgrade paths with testing
- Automating dependency updates with Renovate, Dependabot, or Snyk
- Auditing dependencies for vulnerabilities
- Setting up CI/CD dependency security workflows

## Two Modes of Operation

**Interactive** — Walk through setup questions to generate tailored config. Use for fresh setup.

**Default** — Apply recommended defaults immediately: 7-day cooldown, block all scripts, frozen-lockfile, lockfile-lint, Dependabot with cooldown. Customization optional.

## Interactive Setup Flow

When the user wants tailored configuration, walk through these decisions. Skip this section entirely if using default mode.

### Tier 1: Required Decisions

Always ask these 3 questions before generating any config:

**1. Package Manager**

"Which package manager does this project use?"

| Answer | Generates |
|--------|-----------|
| npm | `.npmrc` |
| Bun | `bunfig.toml` |
| pnpm | `pnpm-workspace.yaml` |
| Yarn | `.yarnrc.yml` |
| Deno | `deno.json` config |

**2. Cooldown Period**

"How many days should newly published packages age before install? This prevents supply chain attacks where malicious packages are discovered and unpublished within days."

| Option | Days | Use Case |
|--------|------|----------|
| Aggressive | 3 | Catches most typosquatting |
| Recommended | 7 | Good balance for most projects |
| Conservative | 14 | Critical/production systems |
| Paranoid | 21 | Matches Snyk's built-in default |
| Custom | N | User specifies |

**3. Post-Install Script Policy**

"How should lifecycle scripts (postinstall, preinstall) be handled? These are the #1 attack vector for supply chain attacks."

| Option | Behavior |
|--------|----------|
| Block all (recommended) | `--ignore-scripts` + allow-git=none |
| Allowlist | Block by default, allow specific trusted packages |
| Review only | Warn but don't block |

### Tier 2: Security Tooling (Offer as Batch)

"Which of these security features would you like to configure? Select any that apply."

**4. CI/CD Automation Tool**

| Answer | Generates |
|--------|-----------|
| Dependabot | `.github/dependabot.yml` with cooldown |
| Renovate | `renovate.json` with minimumReleaseAge |
| Snyk | No config needed (21-day cooldown built-in) |
| None | Skip |

**5. Automerge Policy**

| Option | Behavior |
|--------|----------|
| None | All updates require manual review |
| Minor+Patch only | Auto-merge safe updates, review majors |
| All with approval | Auto-merge after team approval |

**6. Update Schedule**

| Option | Config Value |
|--------|-------------|
| Daily | `"daily"` |
| Weekly (default) | `"weekly"` |
| Biweekly | `"biweekly"` |
| Monthly | `"monthly"` |

**7. Install-Time Security Tooling**

"Which security tools should protect dependency installation?"

| Option | Free? | What It Does |
|--------|-------|-------------|
| socket npm wrapper | Yes (beta) | Wraps npm/npx, blocks malicious packages before install. Run `socket wrapper on` to enable system-wide. |
| npq | Yes | Pre-install auditor (CVE, typosquat, age, provenance checks) |
| Socket Firewall (sfw) | No | Real-time deep analysis, blocks malicious packages |
| socket npm + npq | Yes | Both free tools combined |
| None | — | Skip |

Load `references/socket-cli-guide.md` for full Socket CLI setup including authentication and free vs authenticated features.

**8. Lockfile Validation**

| Option | Behavior |
|--------|----------|
| Yes (recommended) | Adds `lockfile-lint` + CI script |
| No | Skip |

### Tier 3: Advanced Options (Only If User Opts In)

"Would you like to configure any advanced options?"

**9. Dev Containers** — Generate hardened `.devcontainer/devcontainer.json` (Yes/No)

**10. Secrets Manager** — 1Password CLI / Infisical / None

**11. pnpm Trust Policy** — Enable `trustPolicy: no-downgrade` (pnpm 10.21+ only, Yes/No)

**12. Cooldown Exclusions** — Package names that bypass cooldown (e.g., `@types/react`, `typescript`, `esbuild`)

## Security-First Upgrade Principles

1. **Cooldown before installing** — Wait 7 days for new package versions to be vetted by the community
2. **Block post-install scripts** — Prevent arbitrary code execution during `npm install`
3. **Freeze lockfiles in CI** — Use deterministic installs (`npm ci`, `--frozen-lockfile`)
4. **Validate lockfile integrity** — Use `lockfile-lint` to detect injection
5. **Audit before trusting** — Use `npq` or Socket CLI to check packages before installing
6. **Upgrade incrementally** — One major version at a time with testing between each
7. **Never blindly upgrade** — Avoid `npm update` or `npm-check-updates -u` without review
8. **Scan before and after** — Use `socket scan` to detect supply chain issues beyond CVEs

## Cooldown Period: Prevent Supply Chain Attacks

Newly published packages may contain malicious code discovered within hours. Configure a cooldown period to delay installation.

### Quick Setup

**npm** (`.npmrc`):
```ini
min-release-age=7
```

**Bun** (`bunfig.toml`):
```toml
[install]
minimumReleaseAge = 604800  # 7 days in seconds
minimumReleaseAgeExcludes = ["@types/bun", "typescript"]
```

**pnpm** (`pnpm-workspace.yaml`):
```yaml
minimumReleaseAge: 10080  # 7 days in minutes
minimumReleaseAgeExclude:
  - '@types/react'
  - typescript
```

**Yarn** (`.yarnrc.yml`):
```yaml
npmMinimalAgeGate: "7d"
npmPreapprovedPackages:
  - "@types/react"
  - "typescript"
```

Load `references/cooldown-config-guide.md` for detailed per-PM configuration, CI tool integration, and exclusion patterns.

Use `templates/<pm>-security.tmpl` for copy-paste ready config files.

## Disable Post-Install Scripts

Post-install scripts are the most common supply chain attack vector (Shai-Hulud, Nx, event-stream incidents).

### Quick Setup

**npm**:
```bash
npm config set ignore-scripts true
npm config set allow-git none
```

**Bun**: Disabled by default. Allow specific packages in `package.json`:
```json
{ "trustedDependencies": ["esbuild", "sharp"] }
```

**pnpm (10.0+)**: Disabled by default. Allow specific packages in `pnpm-workspace.yaml`:
```yaml
allowBuilds:
  esbuild: true
strictDepBuilds: true  # Hard error on unreviewed scripts
```

Load `references/package-manager-security.md` for full per-PM hardening including pnpm `trustPolicy`, `blockExoticSubdeps`, and `@lavamoat/allow-scripts`.

## Deterministic & Frozen Installs

Always use frozen install commands in CI to ensure reproducible builds:

| Package Manager | Command | What It Does |
|----------------|---------|-------------|
| npm | `npm ci` | Deletes node_modules, installs exact lockfile versions |
| Bun | `bun install --frozen-lockfile` | Fails if lockfile is out of sync |
| pnpm | `pnpm install --frozen-lockfile` | Fails if lockfile is out of sync |
| Yarn | `yarn install --immutable --immutable-cache` | Validates lockfile and cache |
| Deno | `deno install --frozen` | Frozen installation |

Commit all lockfiles to version control: `package-lock.json`, `bun.lock`, `pnpm-lock.yaml`, `yarn.lock`, `deno.lock`.

## Lockfile Validation

Install and configure `lockfile-lint` to detect lockfile injection attacks:

```bash
npm install --save-dev lockfile-lint
```

```json
{
  "scripts": {
    "lint:lockfile": "lockfile-lint --path package-lock.json