Using CircleCI for Node.js

1. Introduction

CircleCI is a continuous integration and continuous delivery platform that automates the software development process. When working with Node.js applications, CircleCI can help streamline the build, test, and deployment processes, ensuring that your code is always in a deployable state.

2. Installation

To get started with CircleCI for your Node.js project, follow these steps:

3. Configuration

The configuration file specifies how CircleCI will build your project. Here’s a basic example for a Node.js application:

version: 2.1
jobs:
  build:
    docker:
      - image: circleci/node:14
    steps:
      - checkout
      - run:
          name: Install Dependencies
          command: npm install
      - run:
          name: Run Tests
          command: npm test

workflows:
  version: 2
  build_and_test:
    jobs:
      - build

This configuration does the following:

4. Running Tests

To ensure that your tests run in CircleCI, make sure you have a test script defined in your package.json. For example:

{
  "scripts": {
    "test": "mocha"
  }
}

Now, when you push changes to your repository, CircleCI will automatically run your tests as part of the build process.

5. Best Practices

When using CircleCI for your Node.js projects, consider the following best practices:

      - save_cache:
          paths:
            - ./node_modules
          key: dependency-cache-{{ checksum "package.json" }}

6. FAQ