Upgrade your project with linters, prettier & husky

Hello everyone, If you have ever worked on an open-source project or any project in general where multiple people collaborate together then you might have faced issues like commit convention does not match. There is no proper/even indentation to the code or simply the difference of ' ' and " " in the code. This actually makes the codebase messier. Now how can you overcome that? So there are many predefined plugins/libraries which help you in overcoming all the above-mentioned problems. So in this blog, we are going to see the following things

ESLint (For generalizing the style standards for js code)
Prettier (For indenting your codebase evenly)
Husky (Running the tests and commit convention check-in the local machine before committing so that you don't face linting and test fail errors afterward)

Note: This linting style is of my personal choice. You can tweak the codes to fit in your linting and style standards :)

Extension for VS code

(This is my personal recommendation. It's a personal choice) If you want to follow along then I would recommend you to download it. For downloading you can copy the code given with the name below, into the extension search box and the extension will pop up. Click on install and it will get added to your vs code.

Eslint ==> dbaeumer.vscode-eslint
Prettier ==> esbenp.prettier-vscode

Initializations & Installations

Open the project in the terminal and run the following commands in the same sequence.

Run the following command (if not cloned and started fresh in the local machine)
```
git init
```
Run the following command (This is initialized package.json in your project)
```
npm init -y
```

Run the following command (This will create node modules and package-lock.json)

npm i --save-dev eslint eslint-config-prettier eslint-plugin-prettier husky lint-staged prettier

Eslint

Create file .eslintrc.json in the root of the project and paste the following in it

{
    "env": {
      "es2020": true,
      "node": true
    },
    "extends": [
      "eslint:recommended",
      "plugin:prettier/recommended"
    ],
    "rules": {
      "linebreak-style": ["error", "unix"],
      "quotes": ["error", "single", { "allowTemplateLiterals": true }],
      "semi": ["error", "always"],
      "prefer-const": "error",
      "eqeqeq": ["error", "always"],
      "curly": ["error"]
    },
}

Prettier

Now create .prettierrc in the root of the project file and paste the following in the file

{
    "endOfLine": "lf",
    "useTabs": true,
    "singleQuote": true
}

Git Ignore

Now create .gitignore file in the root of the project and paste the following in the file

/node_modules/
.env

Huskey

Now create .huskyrc file in the root of the project and paste the following in it

{
  "hooks": {
    "pre-commit": "lint-staged"
  }
}

Now go to package.json and add this at the end before the last }

"lint-staged": {
    "*.js": ["eslint --fix", "prettier --write"]
}

Now run the following commands one by one in the terminal

Installing husky to the local project directory
```
npm install husky --save-dev
```
Intall husky package
```
npx husky install
```
Initialize husky package and install dependencies
```
npx husky-init && npm install
```
This will create husky folder

Now go to pre-commit file in the husky folder and delete the npm test command. As we don't have tests as of now

Installing conventional commit style

npm install --save-dev @commitlint/cli @commitlint/config-conventional

Add the command to commitlint.config.js file

echo "module.exports = {extends: ['@commitlint/config-conventional']}" > commitlint.config.js

Adding husky reference commit message library

npx husky add .husky/commit-msg 'npx --no-install commitlint --edit "$1"'

That's it !!! You have setup your project with cool tools which would ease your work as a maintainer or reviewer. This will take care of all of your style guidelines.

You are all set-up with your js project. If you can to configure it with js follow Nicholas Carrigan Notes

Reference :

Eddie Jaoude Youtube Video Nicholas Carrigan Notes Commit lint org Huskey official documentation

❤️ Thank you for reading ❤️

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