How to integrate PurgeCSS with Angular CLI project

I have an Angular project created with Angular CLI, so I have angular.json file for configuring the build.

I wanted to integrate PurgeCSS as it seems to be a great tool to reduce the size of our CSS bundle.

On PurgeCSS website, they explain how to integrate with Webpack. I found a tutorial that explains how to add custom webpack integration with Angular CLI.

Did anyone have a successful example of PurgeCSS integrated with Angular CLI project ?

I created this bash script to use PurgeCSS with my Angular app. It reduced my 'styles.css' file size from 63kb to only 3kb! Hope it works for you too.

Steps:

1. create a new file named purgecss.sh inside your project folder
2. insert the code below into purgecss.sh file
3. run ./purgecss.sh from CLI

#!/bin/bash

# run production build
ng build --prod --output-hashing none

# go to the dist/yourProjectName folder
cd ./dist/yourProjectName

# make a new directory named 'css' (you can name it anything)
mkdir css

# run PurgeCSS & make a new '.css' file inside the 'css' directory
purgecss --css ./styles.css --content ./index.html ./*.js --out ./css

# replace the 'dist/yourProjectName/styles.css' file with the 'dist/yourProjectName/css/styles.css' file
mv ./css/styles.css ./styles.css

# delete the previously created 'css' directory
rm -r css