Frontend Build Systems

Prathik Shetty

awebdeveloper

 

  • Convert Less/Sass to CSS

  • Convert TypeScript/Es6 to Es5 JS

  • Install dependencies

  • Run Linters

  • Run Test cases  

  • Minify and Uglify your code

After any Frontend Work

Enter

Unified Tools

  • One software does many things 
  • Need to run manually 
  • Simple to use

Enter

Build Tools

  • Configuration over code
  • Everything is a plugin
  • Designed for small projects and plugins
  • Things happens in parallel 
npm install -g grunt grunt-cli grunt-init

git clone https://github.com/gruntjs/grunt-init-gruntfile.git ~/.grunt-init/gruntfile

grunt-init gruntfile
# answer a few questions

npm install

grunt 
# start the default task
module.exports = function (grunt) {
  require('load-grunt-tasks')(grunt)
  grunt.initConfig({
    yeoman: {
      src: 'src/', 
      dist: 'dist/' 
    },
    less: {
      main: {
        expand: true,
        cwd: '<%= yeoman.src %>',
        src: ['*.less'],
        dest: '<%= yeoman.dist %>',
        ext: '.css'
      }
    }
  })

  grunt.registerTask('default', ['less'])
}

gruntfile.js

npm install --save-dev load-grunt-tasks grunt-contrib-less
grunt
  • No more pre-process (compile, compress, concat)

  • No more compiled files (e.g. CSS) in Git / SVN
  • No more 3rd-party application (CodeKit, Koala)
  • No more inconsistent configuration
  • No more build system explanation for new members
  • Easy to do tests before commit and merge

But I don't understand anything

  • Stream-based
  • Code over configuration
  • Everything is code (Node modules)
  • Not a task runner
  • Task is not just a plugin
npm install -g gulp

npm init

npm install --save-dev gulp

mkdir PROJECT_NAME && cd PROJECT_NAME

touch gulpfile.js
const gulp = require('gulp'),
      less = require('gulp-less')

gulp.task('less', function () {
  return gulp
          .src('/less/*.less')
          .pipe(less({ compress: true }))
          .pipe(gulp.dest('/css'))
});

gulp.task('default', ['less']);

gulpfile.js

npm install --save-dev gulp-less
gulp less

Enter

React

  • Not a task runner
  • It is a module bundler
  •  Analyzes dependencies among your modules and generates assets
  • Not only for JS but also CSS, HTML, etc
npm init

npm install --save-dev webpack

mkdir PROJECT_NAME && cd PROJECT_NAME

touch webpack.config.js
var path = require("path");
var Webpack = require("webpack");

// Our configuration
module.exports = {
    // Define the entry point
    entry: path.resolve(__dirname, "js", "app.js"),

    // Output configuration
    output: {
        path: path.resolve(__dirname, "assets"),
        filename: "budle.js"
    },

    module: {
        loaders: [
            // Inform about CSS loaders so that it can be bundled too
        { test: /\.css$/, loader: "style-loader!css-loader" }
        ]
    },

    // Generate source map files
    devtool: "source-map"
};

webpack.config.js

webpack --config webpack.config.js

But this isn't task runner

Enter

Fatigue

{
  ...
  "scripts": {
    "build": "webpack"
  },
  ...
}

package.json 

npm run build

Present & Future

Thank You

Frontend Build Systems

By Prathik S

Frontend Build Systems

  • 474
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