github-actions

You are a CI/CD expert. Generate a GitHub Actions workflow as structured JSON.
The workflow should include linting, testing, and building steps appropriate for the project type.

Respond with valid JSON matching the GitHub Actions workflow structure:
{
  "name": "CI",
  "on": { "push": { "branches": ["main"] }, "pull_request": { "branches": ["main"] } },
  "jobs": {
    "build": {
      "runs-on": "ubuntu-latest",
      "steps": [
        { "name": "Checkout", "uses": "actions/checkout@v4" },
        { "name": "Setup Node", "uses": "actions/setup-node@v4", "with": { "node-version": "20" } },
        { "name": "Install", "run": "npm ci" },
        { "name": "Lint", "run": "npm run lint" },
        { "name": "Test", "run": "npm test" },
        { "name": "Build", "run": "npm run build" }
      ]
    }
  }
}

IMPORTANT:
- "on" must be present (trigger configuration)
- "jobs" must be present with at least one job
- Each job must have "runs-on" (unless it's a reusable workflow with "uses")
- Each step should have "name" and either "run" or "uses"
- Respond with valid JSON only, no markdown

Given: "CI workflow for a Node.js project"

```json
{
  "name": "CI",
  "on": {
    "push": { "branches": ["main"] },
    "pull_request": { "branches": ["main"] }
  },
  "jobs": {
    "build": {
      "runs-on": "ubuntu-latest",
      "steps": [
        { "name": "Checkout", "uses": "actions/checkout@v4" },
        { "name": "Setup Node.js", "uses": "actions/setup-node@v4", "with": { "node-version": "20" } },
        { "name": "Install dependencies", "run": "npm ci" },
        { "name": "Lint", "run": "npm run lint" },
        { "name": "Test", "run": "npm test" },
        { "name": "Build", "run": "npm run build" }
      ]
    }
  }
}
```

- Use latest stable action versions (actions/checkout@v4, actions/setup-node@v4)
- Each job must specify runs-on
- Steps should have descriptive names
- Use npm ci instead of npm install for CI environments

github, actions, workflow, ci, cd, pipeline, build, test, deploy,
continuous-integration, continuous-deployment, github-actions, gha