Terser is a javascript compressor and mangler supporting ES6+ specification. In this tutorial, you will get to know how to use terser to minify/compress javascript.
Prerequisite: nodejs should be installed on your system.
1. Installing terser
Install terser using yarn or npm.
npm i terser -g
2. Creating a script
Add the script to package.json file of your project.
"scripts": {
...
"minify": "terser src/js/app.js -c -m --output src/minified/app.min.js"
...
}
Replace src/js/app.js and src/minified/app.min.js with your input and output file path respectively.
Here, -c flag stands for --compress and -m stands for --mangle. For more options, visit the official documentation of terser.
3. Executing the script
Run the script using this command:
npm run minify
Conclusion
Apart from terser, you can also use uglify-js to compress or minify javascript.
You can also try terser online if you want.