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What is the purpose of a package-lock.json file in a Node.js project, and why should it be committed to version control? What is the purpose of a .gitignore file in a Node.js project, and what should always be included in it? What is a monorepo, and what specific tooling (like npm workspaces or Turborepo) helps manage multiple related Node.js packages within a single repository? What is semantic versioning (semver), and how does it inform how a Node.js package's version number should change between releases? How would you set up branch protection rules and required status checks for a Node.js repository to prevent broken code from being merged? What is the difference between npm, Yarn, and pnpm as Node.js package managers, and what specific advantage does pnpm offer regarding disk space? What is a pull request template, and how does it help standardize code review in a Node.js team's Git workflow? What is the purpose of an npm 'scripts' section in package.json, and how do custom scripts standardize common project tasks across a team? How would you use Git hooks (like a pre-commit hook via Husky) to enforce code quality checks before code is committed in a Node.js project? How would you structure conventional commit messages in a Node.js project, and how do they enable automated changelog generation?
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What is the purpose of a CHANGELOG.md file in a Node.js project, and what should typically be included in each entry?

Beginner

Answer

A CHANGELOG.md documents notable changes for each released version in a human-readable format, typically grouped by category (Added, Changed, Fixed, Removed, Breaking Changes) and version number, letting users and downstream consumers of a package quickly understand what changed between versions without needing to read through the full commit history themselves, which is especially valuable when deciding whether it's safe to upgrade.
## [2.1.0] - 2026-01-15
### Added
- Support for refresh token rotation
### Fixed
- Off-by-one error in pagination results
### Breaking Changes
- Removed deprecated v1 authentication endpoints
Real-world example A team evaluating whether to upgrade a critical dependency checks its CHANGELOG.md first, quickly identifying that the new version includes a breaking change to an API they rely on, letting them plan the necessary code changes before upgrading rather than discovering the break after deployment.

Common follow-ups: How does a tool like semantic-release or standard-version automatically generate this file from conventional commit messages?;What's the risk of a changelog that's manually maintained and inconsistently updated compared to an automated one?

npm & Packages;CI/CD Publishing & Deployment
All 15 Git & Project Management questions