What is the difference between npm ci and npm install?

What is the difference between npm ci and npm install?

npm ci is used for continuous integration and installs dependencies from the package-lock.json file, ensuring a clean slate. npm install installs dependencies listed in package.json and can modify the package-lock.json.

When should I use npm ci instead of npm install?

You should use npm ci when you want to ensure a consistent environment, especially in CI/CD pipelines, as it installs exact versions.

Does npm ci remove existing node_modules?

Yes, npm ci removes the existing node_modules folder before installing, ensuring a fresh installation.

Can I use npm ci for local development?

While you can use npm ci locally, it's primarily designed for CI environments. For local development, npm install is usually preferred.