Complete Git Guide: Understand and Master Git and GitHub - Introducing a Lint-Staged Package to Check only Staged Files

The video tutorial explains how to use linting and testing scripts before committing code changes. It demonstrates creating a new file and committing changes, showing how linting and testing are executed for all files. The tutorial introduces the lint-staged package, which allows selective checks on staged files, and guides through its installation and configuration in package.json. It also covers integrating lint-staged with Husky for pre-commit hooks, ensuring only staged JavaScript files are linted and tested, optimizing the development workflow.

What is the purpose of running linters and tests before every commit?

• To ensure code quality and functionality

• To increase the size of the repository

• To slow down the development process

• To remove all errors automatically

What is the main advantage of using the 'lint-staged' package?

• It selectively runs checks only on staged files

• It deletes unused files

• It automatically commits changes

• It runs checks on all files in the project

How can you install 'lint-staged' as a development dependency?

• npm install lint-staged --save-dev

• npm install lint-staged --save

• npm install lint-staged --global

• npm install lint-staged

What configuration is needed in package.json to use 'lint-staged'?

• Add a 'scripts' section with a single command

• Add a 'lint-staged' section with an array of scripts

• Add a 'dependencies' section with 'lint-staged'

• Add a 'devDependencies' section with 'lint-staged'

Which command is used to run tests only related to staged files?

• jest --all

• jest --findRelatedTests

• npm test

• npm run test

What happens if there are no staged JavaScript files when using 'lint-staged'?

• The commit proceeds without running checks

• All files are linted and tested

• The commit is blocked

• An error message is displayed

What is the role of the Husky package in this setup?

• To deploy the application

• To execute pre-commit scripts

• To manage package dependencies

• To compile JavaScript files