This document provides an overview of materials for a webpack lecture, including basic webpack parameters, practical examples, and frequently asked questions. It covers topics such as entry points, output configuration, loaders, plugins, code splitting, and techniques for optimizing build performance and bundle size. The document also provides links to webpack documentation and resources for learning more about developing with webpack.
Webpack is a build tool that bundles assets and optimizes frontend projects. It supports bundling of CSS, images, and other file types alongside JavaScript code. Loaders allow preprocessing of files, and plugins enable functionality like code splitting, asset optimization, environment variable injection, and more. Webpack bundles modules together and outputs static assets to serve on a production server. Its flexibility, loaders, and plugins make it well-suited for large projects with complex asset workflows.
webpack is a powerful module bundler and it becomes an essential part of our JavaScript Ecosystem. This ppt comprises an overview on webpack, some of the core concepts of webpack and it's configurations with some working examples.
Webpack has quickly become one of the most popular choices among web developer builder tools. It can build, minify, split and do others awesome things to your assets.
We will do a simple walk through to let you familiar with the basics of webpack and all its potential.
Presentation from UppsalaJS, November 3, 2016.
Together we built a Javascript app and explored many parts of Webpack and how we can use Webpack to create production ready code as well as use it to help with our development.
Webpack is a module bundler that bundles JavaScript files for use in a browser. It takes modules with dependencies and generates static assets representing those modules. The key steps are to specify an entry point, add loaders for file transformations, specify the output bundle, and use plugins like html-webpack-plugin to generate HTML files that link to the bundled scripts. Webpack traverses dependency graphs to bundle assets in an optimized way.
- Webpack is a module bundler that builds dependencies between modules and manages assets like JavaScript files, CSS files, and images.
- It uses loaders to transform different types of modules and plugins to extend its functionality. Loaders handle file transformations while plugins can access and modify the build process.
- Code splitting allows splitting code into separate bundles to optimize load performance by prioritizing loading and allowing on-demand loading of code. Techniques like extracting vendor code and using import statements help enable code splitting in Webpack.
Webpack is just a module bundler, they said. What they didn't say is why we need it, and what was the motivation that made us achieve what Webpack have been doing for us. In this talk we will navigate through the years of front-end development, ranging from 2003 to nowadays to understand this, and in the end, we will walk thought a complete Webpack project to understand how it works.
This document discusses JavaScript modules and module bundlers like Webpack. It describes the purposes of JavaScript modules as encapsulation, organization, avoiding global scope pollution, and reusability. It then covers different ways to define modules, including using global variables, AMD, CommonJS, and ES6 modules. Webpack is introduced as a module bundler that can bundle modules, implement code splitting to optimize loading, and use loaders to treat different file types as modules. Webpack's plugin system and development tools are also discussed.
Webpack is a build tool that bundles assets and optimizes frontend projects. It supports bundling of CSS, images, and other file types alongside JavaScript code. Loaders allow preprocessing of files, and plugins enable functionality like code splitting, asset optimization, environment variable injection, and more. Webpack bundles modules together and outputs static assets to serve on a production server. Its flexibility, loaders, and plugins make it well-suited for large projects with complex asset workflows.
webpack is a powerful module bundler and it becomes an essential part of our JavaScript Ecosystem. This ppt comprises an overview on webpack, some of the core concepts of webpack and it's configurations with some working examples.
Webpack has quickly become one of the most popular choices among web developer builder tools. It can build, minify, split and do others awesome things to your assets.
We will do a simple walk through to let you familiar with the basics of webpack and all its potential.
Presentation from UppsalaJS, November 3, 2016.
Together we built a Javascript app and explored many parts of Webpack and how we can use Webpack to create production ready code as well as use it to help with our development.
Webpack is a module bundler that bundles JavaScript files for use in a browser. It takes modules with dependencies and generates static assets representing those modules. The key steps are to specify an entry point, add loaders for file transformations, specify the output bundle, and use plugins like html-webpack-plugin to generate HTML files that link to the bundled scripts. Webpack traverses dependency graphs to bundle assets in an optimized way.
- Webpack is a module bundler that builds dependencies between modules and manages assets like JavaScript files, CSS files, and images.
- It uses loaders to transform different types of modules and plugins to extend its functionality. Loaders handle file transformations while plugins can access and modify the build process.
- Code splitting allows splitting code into separate bundles to optimize load performance by prioritizing loading and allowing on-demand loading of code. Techniques like extracting vendor code and using import statements help enable code splitting in Webpack.
Webpack is just a module bundler, they said. What they didn't say is why we need it, and what was the motivation that made us achieve what Webpack have been doing for us. In this talk we will navigate through the years of front-end development, ranging from 2003 to nowadays to understand this, and in the end, we will walk thought a complete Webpack project to understand how it works.
This document discusses JavaScript modules and module bundlers like Webpack. It describes the purposes of JavaScript modules as encapsulation, organization, avoiding global scope pollution, and reusability. It then covers different ways to define modules, including using global variables, AMD, CommonJS, and ES6 modules. Webpack is introduced as a module bundler that can bundle modules, implement code splitting to optimize loading, and use loaders to treat different file types as modules. Webpack's plugin system and development tools are also discussed.
Improving build solutions dependency management with webpackNodeXperts
Webpack is a build tool that bundles assets including JavaScript, images, fonts and CSS into packages called bundles that can be consumed in the browser. It analyzes dependencies between files and packages them accordingly. The webpack configuration file specifies the entry point, output, loaders and plugins. Loaders transform files and plugins add functionality to bundles. Webpack differs from other build tools like Grunt and Gulp in that it generates dependency graphs to bundle assets optimally rather than just running predefined tasks.
This document provides an overview and introduction to Webpack. It begins by establishing some ground rules and an agenda. It then discusses what prompted the creator to start using Webpack and how it works as an "assets crawler and bundler". The rest of the document covers the key aspects of Webpack like its configuration file, loaders and plugins, and how it can be integrated with other tools. Code examples are provided and questions are welcomed from the audience.
There are many build tools available to JavaScript developers, but Webpack is quickly emerging as the leader of the pack. To better understand its use cases and where it excels above the rest, Jake Peyser will walk you through how to use it as a task runner and module bundler, as well as a few other handy tips. Come learn why Webpack is the most popular build tool with React developers.
This document discusses how bundling front-end code with Webpack can help solve issues with large JavaScript files in single-page apps. It introduces Webpack as a module bundler that can handle dependencies across JavaScript, CSS, images and more. It supports loading modules on demand and pre-processing file types. The document provides a demo GitHub repo and references to learn more about Webpack's features and how companies like Instagram use it.
Production optimization with React and Webpackk88hudson
This document discusses optimizing React and Webpack applications for production. It recommends:
1. Not optimizing prematurely and ensuring engineering and product goals are aligned before optimizing.
2. Understanding available optimization options at build time like minification, code splitting, and using production builds of dependencies, and at runtime like server-side rendering and component lifecycle methods.
3. Instrumenting the application to measure performance metrics like bundle size, load time, and render time to identify optimization opportunities.
4. Setting meaningful benchmarks based on the actual user experience expected, rather than arbitrary metrics, to determine what constitutes acceptable performance.
This document provides an overview of Webpack and its capabilities for bundling assets and code splitting. It discusses Webpack's flexibility in configuration, support for different module systems, extensive ecosystem of plugins, and ability to hot reload code changes. It also covers using loaders, the development server, extracting CSS, code splitting, aliases and multiple builds. Resources for learning more about Webpack are provided.
Once upon a time, there were css, js and server-side renderingAndrea Giannantonio
22 July 2016 - RomaJS meetup
Video: https://www.youtube.com/watch?v=Xr9TItuNxLg
Once upon a time, there were css, js and server-side rendering by @JellyBellyDev and @MatteoManchi
Webpack and Web Performance Optimization discusses using Webpack and other tools to optimize web performance. It introduces Webpack as a module bundler and discusses its features like code splitting and optimizations. It covers setting up loaders and the Webpack build flow. The document also discusses various web optimization techniques including image optimization, reducing requests, minifying assets, critical rendering path, and caching. It provides examples of optimizing sites for mobile and comparisons of optimization approaches with different user and business impacts. The document discusses using tools like Gulp and integrating with Webpack for tasks like Sass compilation and testing. It also covers modularizing JavaScript with React and using Babel to transpile ES6 to ES5. Finally, it demonstrates collabor
Webpack is a module bundler that takes modules with dependencies and generates static assets by bundling them together. It manages dependencies, combines assets like JavaScript, CSS, images, and fonts, and allows for preprocessing with loaders and plugins. Webpack addresses pain points like module management, bundling assets together efficiently, and handling changes by allowing code splitting, extracting common dependencies, and enabling hot module replacement to avoid full page reloads on changes.
Webpack is a module bundler that packs JavaScript files and their dependencies into small bundles for efficient loading on the browser. It builds a dependency graph by walking through imports and outputs bundles or individual files. Loaders allow transforming assets and piping them together, like using babel-loader to transpile JSX to ES5 and css-loader to bundle CSS. This summarizes the key points about Webpack's purpose, how it builds dependencies, and the role of loaders.
TDC2017 | Florianopolis - Trilha DevOps How we figured out we had a SRE team ...tdc-globalcode
The document discusses the history and evolution of JavaScript packaging and module bundling from 2000 to the present. It covers early approaches using individual script tags to load JS files, the introduction of minification tools like JSMin in 2003, concatenating files together in the late 2000s, module loaders like RequireJS in 2009, the rise of Node.js and package managers in 2010, and the modern dominance of bundlers like Webpack since 2014 which use loaders to bundle dependencies and assets into single files or chunks.
This document summarizes key aspects of using Vue with webpack including:
1. Configuring webpack to handle Vue components, stylesheets, and assets using loaders like vue-loader and css-loader.
2. Setting up hot reloading for Vue components using vue-hot-reload-api and webpack-dev-server.
3. Additional tools that can be used with Vue and webpack like vue-cli, babel, and plugins.
Advanced front-end automation with npm scriptsk88hudson
This document discusses using npm scripts for front-end automation and builds. It argues that npm scripts provide a simple, cross-compatible way to automate tasks like bundling, transpiling, testing and deployment without additional build tools. Npm scripts take advantage of existing CLI tools and allow decomposing complex automation into simple, composable tasks through lifecycle scripts and npm-run-all. Some tradeoffs are less extensibility and ongoing challenges with cross-platform support, but the approach aims to provide simpler mental models than alternative build systems.
CSS variables (custom properties) allow defining values that can be used throughout CSS code. This avoids duplicating values and makes themes easier to implement. Variables can be set globally or within specific scopes, and their values can cascade like regular properties. They also enable new techniques like responsive breakpoints based on variable values rather than fixed numbers. CSS variables are a W3C candidate recommendation supported in modern browsers via a double declaration approach for progressive enhancement.
Jspm is a package manager that supports npm, GitHub registries and extends package.json, allowing installation of packages like jquery, materialize-css and immutablejs using commands like jspm install. It uses SystemJS as its module loader and supports TypeScript, enabling development of Angular 2 applications with features such as components, services and routing. The document provides an overview of the Angular 2 ecosystem including jspm, SystemJS, TypeScript and highlights of the Angular 2 framework.
This document discusses using Bower and Grunt together to manage front-end dependencies and files in a workflow. Bower is used to declare and install dependencies, while Grunt plugins like grunt-bowercopy and grunt-contrib-clean are used to copy dependencies to consistent locations and clean files. Setting up this workflow with Bower, grunt-bowercopy, grunt-contrib-clean, and Git can help organize a project's dependencies, facilitate tracking without committing all files, and reduce build times.
This document discusses building scalable network applications using Node.js. It begins with an introduction to Node.js, describing it as a software platform built on the Chrome V8 engine for building scalable applications using JavaScript on the server side. It then discusses why to use Node.js, noting that its single-threaded and event-driven model avoids issues with memory usage that can occur in multi-threaded models. The document proceeds to explain event loops and non-blocking I/O in Node.js. It then provides an example of building a simple web server with Node.js. Finally, it introduces Express.js and provides an overview of how to structure an Express application using MVC patterns with models, views,
Vue JS is a progressive framework for building user interfaces. It uses a component-driven approach and features like reactivity and computed properties that make it possible to build desktop, mobile, and web applications. Some key features include reactive data binding, conditional rendering, mixins, slots for content distribution, and Vuex for global state management between components. Asynchronous and dynamic components add flexibility. Vue shares similarities with React in using virtual DOM and components but differs in file structure and size.
Django + Vue, JavaScript de 3ª generación para modernizar DjangoJavier Abadía
Slides de la charla que di en la PyConEs 2017 en Cáceres, el 24 de Septiembre.
Explicaba cómo montar un entorno de desarrollo ágil con Django en el back, Vue en el front y webpack para empaquetar el front y proporcionar Hot Module Reloading
The document discusses several tools for JavaScript development including:
1. ECMAScript 6 for new JavaScript features, Visual Studio Code for editing, and Node.js & npm for modules.
2. Build tools like webpack, Babel, and UglifyJS to bundle, transpile, and minimize code.
3. Testing with Jasmine and debugging with Chrome Developer Tools and source maps.
4. Documentation generation with YUIDoc.
A demo project is provided at https://github.com/simonkim/jstools-demo to show how to use these tools together in a workflow.
Improving build solutions dependency management with webpackNodeXperts
Webpack is a build tool that bundles assets including JavaScript, images, fonts and CSS into packages called bundles that can be consumed in the browser. It analyzes dependencies between files and packages them accordingly. The webpack configuration file specifies the entry point, output, loaders and plugins. Loaders transform files and plugins add functionality to bundles. Webpack differs from other build tools like Grunt and Gulp in that it generates dependency graphs to bundle assets optimally rather than just running predefined tasks.
This document provides an overview and introduction to Webpack. It begins by establishing some ground rules and an agenda. It then discusses what prompted the creator to start using Webpack and how it works as an "assets crawler and bundler". The rest of the document covers the key aspects of Webpack like its configuration file, loaders and plugins, and how it can be integrated with other tools. Code examples are provided and questions are welcomed from the audience.
There are many build tools available to JavaScript developers, but Webpack is quickly emerging as the leader of the pack. To better understand its use cases and where it excels above the rest, Jake Peyser will walk you through how to use it as a task runner and module bundler, as well as a few other handy tips. Come learn why Webpack is the most popular build tool with React developers.
This document discusses how bundling front-end code with Webpack can help solve issues with large JavaScript files in single-page apps. It introduces Webpack as a module bundler that can handle dependencies across JavaScript, CSS, images and more. It supports loading modules on demand and pre-processing file types. The document provides a demo GitHub repo and references to learn more about Webpack's features and how companies like Instagram use it.
Production optimization with React and Webpackk88hudson
This document discusses optimizing React and Webpack applications for production. It recommends:
1. Not optimizing prematurely and ensuring engineering and product goals are aligned before optimizing.
2. Understanding available optimization options at build time like minification, code splitting, and using production builds of dependencies, and at runtime like server-side rendering and component lifecycle methods.
3. Instrumenting the application to measure performance metrics like bundle size, load time, and render time to identify optimization opportunities.
4. Setting meaningful benchmarks based on the actual user experience expected, rather than arbitrary metrics, to determine what constitutes acceptable performance.
This document provides an overview of Webpack and its capabilities for bundling assets and code splitting. It discusses Webpack's flexibility in configuration, support for different module systems, extensive ecosystem of plugins, and ability to hot reload code changes. It also covers using loaders, the development server, extracting CSS, code splitting, aliases and multiple builds. Resources for learning more about Webpack are provided.
Once upon a time, there were css, js and server-side renderingAndrea Giannantonio
22 July 2016 - RomaJS meetup
Video: https://www.youtube.com/watch?v=Xr9TItuNxLg
Once upon a time, there were css, js and server-side rendering by @JellyBellyDev and @MatteoManchi
Webpack and Web Performance Optimization discusses using Webpack and other tools to optimize web performance. It introduces Webpack as a module bundler and discusses its features like code splitting and optimizations. It covers setting up loaders and the Webpack build flow. The document also discusses various web optimization techniques including image optimization, reducing requests, minifying assets, critical rendering path, and caching. It provides examples of optimizing sites for mobile and comparisons of optimization approaches with different user and business impacts. The document discusses using tools like Gulp and integrating with Webpack for tasks like Sass compilation and testing. It also covers modularizing JavaScript with React and using Babel to transpile ES6 to ES5. Finally, it demonstrates collabor
Webpack is a module bundler that takes modules with dependencies and generates static assets by bundling them together. It manages dependencies, combines assets like JavaScript, CSS, images, and fonts, and allows for preprocessing with loaders and plugins. Webpack addresses pain points like module management, bundling assets together efficiently, and handling changes by allowing code splitting, extracting common dependencies, and enabling hot module replacement to avoid full page reloads on changes.
Webpack is a module bundler that packs JavaScript files and their dependencies into small bundles for efficient loading on the browser. It builds a dependency graph by walking through imports and outputs bundles or individual files. Loaders allow transforming assets and piping them together, like using babel-loader to transpile JSX to ES5 and css-loader to bundle CSS. This summarizes the key points about Webpack's purpose, how it builds dependencies, and the role of loaders.
TDC2017 | Florianopolis - Trilha DevOps How we figured out we had a SRE team ...tdc-globalcode
The document discusses the history and evolution of JavaScript packaging and module bundling from 2000 to the present. It covers early approaches using individual script tags to load JS files, the introduction of minification tools like JSMin in 2003, concatenating files together in the late 2000s, module loaders like RequireJS in 2009, the rise of Node.js and package managers in 2010, and the modern dominance of bundlers like Webpack since 2014 which use loaders to bundle dependencies and assets into single files or chunks.
This document summarizes key aspects of using Vue with webpack including:
1. Configuring webpack to handle Vue components, stylesheets, and assets using loaders like vue-loader and css-loader.
2. Setting up hot reloading for Vue components using vue-hot-reload-api and webpack-dev-server.
3. Additional tools that can be used with Vue and webpack like vue-cli, babel, and plugins.
Advanced front-end automation with npm scriptsk88hudson
This document discusses using npm scripts for front-end automation and builds. It argues that npm scripts provide a simple, cross-compatible way to automate tasks like bundling, transpiling, testing and deployment without additional build tools. Npm scripts take advantage of existing CLI tools and allow decomposing complex automation into simple, composable tasks through lifecycle scripts and npm-run-all. Some tradeoffs are less extensibility and ongoing challenges with cross-platform support, but the approach aims to provide simpler mental models than alternative build systems.
CSS variables (custom properties) allow defining values that can be used throughout CSS code. This avoids duplicating values and makes themes easier to implement. Variables can be set globally or within specific scopes, and their values can cascade like regular properties. They also enable new techniques like responsive breakpoints based on variable values rather than fixed numbers. CSS variables are a W3C candidate recommendation supported in modern browsers via a double declaration approach for progressive enhancement.
Jspm is a package manager that supports npm, GitHub registries and extends package.json, allowing installation of packages like jquery, materialize-css and immutablejs using commands like jspm install. It uses SystemJS as its module loader and supports TypeScript, enabling development of Angular 2 applications with features such as components, services and routing. The document provides an overview of the Angular 2 ecosystem including jspm, SystemJS, TypeScript and highlights of the Angular 2 framework.
This document discusses using Bower and Grunt together to manage front-end dependencies and files in a workflow. Bower is used to declare and install dependencies, while Grunt plugins like grunt-bowercopy and grunt-contrib-clean are used to copy dependencies to consistent locations and clean files. Setting up this workflow with Bower, grunt-bowercopy, grunt-contrib-clean, and Git can help organize a project's dependencies, facilitate tracking without committing all files, and reduce build times.
This document discusses building scalable network applications using Node.js. It begins with an introduction to Node.js, describing it as a software platform built on the Chrome V8 engine for building scalable applications using JavaScript on the server side. It then discusses why to use Node.js, noting that its single-threaded and event-driven model avoids issues with memory usage that can occur in multi-threaded models. The document proceeds to explain event loops and non-blocking I/O in Node.js. It then provides an example of building a simple web server with Node.js. Finally, it introduces Express.js and provides an overview of how to structure an Express application using MVC patterns with models, views,
Vue JS is a progressive framework for building user interfaces. It uses a component-driven approach and features like reactivity and computed properties that make it possible to build desktop, mobile, and web applications. Some key features include reactive data binding, conditional rendering, mixins, slots for content distribution, and Vuex for global state management between components. Asynchronous and dynamic components add flexibility. Vue shares similarities with React in using virtual DOM and components but differs in file structure and size.
Django + Vue, JavaScript de 3ª generación para modernizar DjangoJavier Abadía
Slides de la charla que di en la PyConEs 2017 en Cáceres, el 24 de Septiembre.
Explicaba cómo montar un entorno de desarrollo ágil con Django en el back, Vue en el front y webpack para empaquetar el front y proporcionar Hot Module Reloading
The document discusses several tools for JavaScript development including:
1. ECMAScript 6 for new JavaScript features, Visual Studio Code for editing, and Node.js & npm for modules.
2. Build tools like webpack, Babel, and UglifyJS to bundle, transpile, and minimize code.
3. Testing with Jasmine and debugging with Chrome Developer Tools and source maps.
4. Documentation generation with YUIDoc.
A demo project is provided at https://github.com/simonkim/jstools-demo to show how to use these tools together in a workflow.
Richard Fridrich: Třesení stromem v JavaScriptuDevelcz
This document discusses tree shaking, which is a technique used in JavaScript module bundlers like Webpack to remove unused code from bundles. It shows how Babel and Webpack can be used together for tree shaking. Specifically, it demonstrates configuring Babel and Webpack to remove an unused function called square from the output bundle.
1. The document discusses integrating Webpack into a Django project to bundle static files.
2. It provides an example Django application and shows how to set up basic Webpack configuration to bundle Vue.js and other static files.
3. Additional Webpack features like hot reloading and code splitting are demonstrated to improve the development and production workflows.
Browserify allows bundling Node.js modules for use in the browser by allowing require statements. It bundles all modules into a single file that can be included in an HTML file. Gulp can be used to automate the Browserify process and add transforms and minification for production builds. This allows writing code with Node.js style modules that works on both server and client sides.
How to replace rails asset pipeline with webpack?Tomasz Bak
How to replace rails asset pipeline with webpack?
How to structure webpack.config.js?
What is NPM equivalent of ".ruby-version"?
What is NPM equivalent of "Gamefile.lock"?
It’s trivial today to start writing and debugging some React code, but it’s not 100% clear how to properly deploy the application, manage versions and what implications that has on the build configurations. Especially if you want to allow different versions for different users in order to perform some A/B testing, testing new features in production environment, come up with some UI experiments, or gradually roll out new features for a subset of users.
In this presentation I hopefully covered all that.
От экспериментов с инфраструктурой до внедрения в продакшенDmitry Makhnev
The document discusses testing and development tools and workflows for JavaScript applications. It covers testing frameworks like Jasmine and Mocha, test runners like Karma, dependency managers like npm and webpack, and task runners like Gulp. It also discusses testing techniques like unit testing, integration testing, and behavior-driven development. Code examples demonstrate using these tools to test JavaScript code and build bundles for deployment.
«От экспериментов с инфраструктурой до внедрения в продакшен»FDConf
The document discusses testing and development environments and tools. It covers topics like unit testing frameworks, test runners, dependency management with package managers, bundling code with webpack, and using tasks runners like Gulp. It provides examples of using these tools like writing unit tests with Jasmine/Mocha, configuring webpack, and defining Gulp tasks.
The hitchhiker's guide to the Webpack - Sara Vieira - Codemotion Amsterdam 2017Codemotion
We all know how amazing Webpack is, we have all heard it somewhere that we should start using it right now the problem usually is how to start. The configuration is not really self-explanatory and can sometimes get really confusing so in this talk I will walk us through getting Webpack set up as we can all make sense of the configuration and what little part does and be ready to start our own projects.
Datagrids with Symfony 2, Backbone and BackgridGiorgio Cefaro
These are the slides of the code-centered presentation I did with Eugenio Pombi at the Javascript User Group Roma and the PHP User Group Roma.
In this presentation we try to show many powerful features of symfony2 and its bundles to work as a backend system for single page applications.
On the client side we describe how we made a javascript editable grid using Backbone.js and its plugin for grids Backgrid.js.
Datagrids with Symfony 2, Backbone and Backgrideugenio pombi
This document discusses using Backbone, Backgrid, and Symfony to build a datagrid application. It covers:
1) Setting up requirements including Symfony, Backbone dependencies, and FOSRestBundle.
2) Building Backbone models, collections, and associations to retrieve and represent ticket data.
3) Implementing a Backgrid grid with columns to display the ticket data.
4) Examples of extending Backgrid with features like select editors, toggle cells, and computed fields.
5) Testing the Backbone collections and API endpoints with sample test code.
This document provides tips and examples for deploying applications using Capistrano and related tools. It demonstrates how to provision virtual machines with Vagrant, configure multi-machine deployments, use Git for faster deployments, set up RVM and Bundler integration, add exception tracking and logging, and schedule tasks with Whenever. It also discusses monitoring tools like New Relic RPM and best practices like log rotation, coming soon pages, and development database dumps.
Universal JavaScript Web Applications with React - Luciano Mammino - Codemoti...Codemotion
Since we started to see JS on the server side, the dream of developers has been to reduce the gap and the cost of switch between frontend/backend. Today with Node.js, React and a whole ecosystem of tools, this dream is becoming true! In this talk I am going to discuss about Universal (a.k.a. Isomorphic) JS and present some practical example regarding the major patterns related to routing, data retrieval and rendering. I will use Node, React, Webpack, Babel and React Router and give you a series of example to get you started easily with this new technology trend.
Universal JS Web Applications with React - Luciano Mammino - Codemotion Rome ...Luciano Mammino
This document outlines a presentation about building universal JavaScript web applications with React. It discusses:
1. The term "universal" in relation to JavaScript and some advantages it provides like maintainability and faster load times.
2. Building a frontend single page application with React and then making it universal by rendering on the server as well with React and Express.
3. Key aspects of universal apps like module sharing, routing, data retrieval and state management that work across client and server.
4. An example of building a universal JavaScript app with React called "Judo Heroes" that shows athlete data and profiles, using components, routing, data and building tools like Babel and Webpack.
Webpack is a module bundler that builds dependency graphs from entry points and combines modules into bundles. It allows developers to use a multi-file approach during development but bundle assets into fewer files for production. Loaders are used to bundle different file types like CSS. Plugins further customize the bundling process. Code splitting bundles common modules separately for better caching. Extracting CSS removes CSS invalidation on HTML changes. Tree shaking removes unused code automatically in production builds.
For decades, JavaScript developers have relied on a multitude of module systems
to organize and share code. But in 2015, ECMAScript finally introduced built-in
standard semantics for modules, providing a long-awaited solution for the
language. While ECMAScript modules have quickly become a popular format for
writing code, most published code is still compiled to a single bundle or to a
legacy module system.
The TC39 committee, which designs the ECMAScript language, is actively
exploring this design space: are there any missing functionalities compared to
previous systems? Do JavaScript developers need any capabilities that the
language does not currently provide? What problems do ECMAScript modules
currently cause?
This talk will walk you through the answers to those questions and show you
current developments, giving a sneak peek at possible future modules features!
(c) JSHeroes 2023
May 18-19th 2023
Cluj Napoca, Romania
https://jsheroes.io
This document discusses Rails engines and gems. It explains that engines allow extracting common functionality into reusable modules. Engines use the Rails::Engine class and Railtie to integrate with Rails applications. The document also covers creating gems, testing engines, mounting engines to host apps, and overriding engine classes and views.
Webpack Encore - Asset Management for the rest of usStefan Adolf
Dealing assets from within monolithic project that even come with a legacy is mostly hard. Encore paves the way for your migration to the "modern" world of frontend technology. It provides an opinonated and very condensed interface to the almighty webpack bundler that just does what you expect from it. Including entry points, tree shaking, code splitting and lazy loading. This talk and its supporting git repo show some of the Encore concepts and comes with a fully working dockerized Symfony 4.2 application utilizing a combined Vue.js and jQuery (sic) frontend. https://github.com/elmariachi111/encore-demo/tree/2019-encore-vue-components (use the 2019- branches)
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
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Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
How to Make a Field Mandatory in Odoo 17Celine George
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
32. How to reduce weight?
webpack-bundle-analyzer
uglifyjs-webpack-plugin
compression-webpack-plugin
https://bundlephobia.com/
32
33. How to speed up?
https://webpack.js.org/guides/build-performance/
CommonsChunksPlugin
cache-loader
parallel-webpack
webpack-dev-server
webpack-hot-middleware
webpack-dev-middleware
33
34. Hot Module Replacement + Redux?
https://webpack.js.org/guides/hot-module-replacement/
https://gist.github.com/markerikson/dc6cee36b5b6f8d718f2e24a249e0491
devServer: {
hot: true
}
plugins: [
new webpack.NamedModulesPlugin(),
new webpack.HotModuleReplacementPlugin()
]
34
35. How to split code into chunks?
https://webpack.js.org/guides/code-splitting/
output: {
filename: '[name].bundle.js',
chunkFilename: '[name].bundle.js',
path: path.resolve(__dirname, 'dist')
}
new webpack.optimize.CommonsChunkPlugin({
name: 'common' // Specify the common bundle's name.
})
35
39. Sergei Iastrebov
Senior Software Engineer
sergei-iastrebov
yastrebserdg@yandex.ru
Questions and answers
CrazySquirrel
//goo.gl/peCRwu
39
Editor's Notes
Good evening, everybody.
Today we going to talk about the Webpack.
First of all, we'll talk about basic parameters for webpack version 4.
Then, we'll take a look at some practical examples.
After that, I'll answer some of your questions from the tech chat.
And at the end you'll receive additional materials and will be able to ask some questions.
Let's start with the main differences and settings of webpack version 4
First thing that you’ll see when using a new webpack is that it can work without any configuration file.
Simply install the webpack and it console utility, and it's ready to go. You can just call webpack and it'll try to take index.js file from src folder as an entry point and compile it into dist.
In order to start webpack in a tracking mode, you needs to pass -watch parameter, then webpack will monitor file changes and re-build them.
Next great innovation of version 4 is mode.
If earlier we passed NODE_ENV and set up what plugins and other things to use, now we can call webpack with the flag -mode developer or production and it'll apply the built-in settings.
About, what is included in which mode you can read in documentation. In general, production mode focuses on compression and optimization, while developer mode focuses on debugging and development speed.
Further, it can be useful for you during development to use the webpack-dev-server. In fact, it's webpack with an express server wrapper, which can be run as well as usual webpack, but in addition to building and tracking files, it runs a development server, track changes and upload files on fly. We'll talk later about what settings you can set for webpack-dev-server. Now I want to draw your attention to the parameter -open which tells webpack-dev-server that at start it's necessary not only to start the dev server, but also to open browser at that address at which this server was started.
You should take into account that when webpack-dev-server working
the data, which it display in the browser, are stored in the memory and not written on disk.
Use webpack without settings kinda fun, but not very effective. So let's add options for webpack. To do this we need to create a file with the name webpack.config.js, which will be used as the default file. Since there can be several webpack configuration files (for the client and server, for prod and dev and etc.), you can specify which file to use with the —config parameter.
The webpack.config.js is a regular js file from which we export an object with parameters for wepback as in previous versions, but in version 4 there is another way to export config as a function.
If we export config as a function, there will be two parameters passed to this function when calling webpack.
- env - this's the environment settings
- options - this's options which were caused by webpack
In env there will be a variable NODE_ENV (if we set it), and in options there will be mode equal to development or production. Based on these variables, we can somehow adjust webpack parameters for different build modes. Let's now look at the options in a detail.
The first required parameter for webpack is entry, if you do not use it in conjunction with gulp.
As value entry can take a string, an array of strings, or an object with keys as chunk names and values as string or array of strings.
The first variant of entry as string or array of strings is similar to setting object with a single key and passing that string or strings to it.
In entry variant as an object, each property are separate chunk that will be written to separate file. At the same time, if an array is passed as a value, the values of these files will be combined and written as one file.
The most common variant of entry is as a key value form with a single string as value.
The output parameters is for output files configuration. If you don't specify it, everything will be written to the index.js file in dist. if you want to override this or if you have multiple chunks, you need to set file names.
File name specifies which mask to use for output file name. In addition to the normal characters it's possible to use several variables, such as:
- id - this's a chunk id;
- hash - this's a module hash,
- chunkhash - this's a chunk hash,
- name - this's a name of the chunk and etc.
Among other things, you can override the directory in which output files will be written (by default it's dist), but if you set path, you can specify in which folder to write. You should remember that in the webpack settings almost all paths are written from root, to write relative paths you can use nodejs module path.resolve.
If you are using webpack-dev-server, you must specify publicPath. What you specify in this parameter will be used as a prefix for the dev server when it searching for files, as well as a prefix for asynchronously loaded chunks.
Two more parameters which will be useful for you, if you do external library,
it’s a library, in which you write the name of the library,
and a libraryTarget, which indicate how your library will connect to others. You can specify it to commonjs, commonjs2, amd, var or umd option, which says that the library can be loaded via AMD, CommonJS2 or root.
Let's talk a little more about mode parameter. As you have already seen, it can be passed through the console arguments, but mode can also be set in the configuration file. Almost all console settings for webpack can be set through a configuration file.
When you enable a particular mode, different plugins adding in webpack and they start working in a different mode. If mode is not set, everything works by default.
You can read more information about mods in the documentation.
The next small parameter is plugins, where you can pass an array of used plugins. By comparison with the previous version, you need to pass less plugins since many of them are passed under the hood depending on mode.
Now let's move on to the main part of webpack settings, namely loaders.
Loaders is specified in the module rules part as an array of objects.
Each object contains the keyword test in which is written a regular expression for matching files. You can also write an exclude property in which you can pass a string or an array of strings that will be used as masks to exclude some files from the scan. Among other things, the keyword use is used to pass one loader or an array of objects. Loaders can also accept additional parameters via the options parameter.
You can also use your own loaders, to do this you can use npm packages, or use the full path to the JS loader file in loader parameter.
Next parameters is target. Target allows you to specify for which system you building your scripts. You can specified it to web or node. Depending on the values wepback will use a variety of building environment.
The context parameter allows you to specify the root folder of the project relative to which all other paths will be resolved. If you specify context, all paths in entry, output or loaders will be considered relative to this specified folder.
Devtool option allows you to specify whether to generate a sourcemap or not. You should use it mostly in the development mode, to make it easier debugging. You can also use it in the production, but again, only for debugging.
Here are the different options for generating sourcemap.
For dev mode, the most convenient is eval, since it's provide really fast build and re-build.
For production, you can use source-map mode, in which source maps will be generated as separate files. In this case, link will be added in each file, which will load the sourcemap file only when the devtools panel is open.
The last thing we'll look at from the main settings is the settings for dev server.
- contentBase tells you which folder to use as the root folder
- compress indicates whether to compress files for browser
- overlay overrides how build errors are reported. without this options, they will be displayed simply in console, and with overlay flag set, they will appear on top of the page, which can be somewhat useful
- hot options used to specify that you want to reload files on fly without reloading whole page.
The rest information you can see in the documentation, because you can configure a lot, but most things work fine by default or need in a very specific cases and remember them is not so helpful. Better look in the documentation if necessary, than to keep all this in mind.
Let's now look at practical examples, how to configure webpack to build different files. The examples will have many different loaders and plugins with references to their documentations. Some basic examples you'll see now, and for more you'll have to go to documents for the same reason as with webpack documentation.
Let's start with what webpack is usually used for.
You can simply use babel or JS or JSX files and ts-loader for TS or TSX.
About ts-loader, you can find others loaders for typescript, but this one I used on a big project and at that time I didn't find any better solution, maybe now you can use something better.
All settings for TypeScript are written in taconfig.json file.
Approximately the file for ts-loader for React project can look like this. We say that our modules will be loaded through commonjs, that our code should be transpiled in es5 and that our library written on es6. Also we say that we use dom and react, that we need source maps and etc.
For babel, the settings should be stored in a .babelrc file.
That is how looks a simple babel config for React.
And below is an example of more complex settings for some js project, in which we specify that code should work under the last two versions of the main browsers and safari since version 7. Plus we say that we going to use arrow functions and Map, but we don't need polyfill for generators or Set.
The next thing you'll probably want to build on wepback is styles.
This could be a regular css, scss, sass, less, styl or something else, but the build scheme would be roughly the same. From the bottom up, you connect the loader for the language in which you have styles, then you can add postcss for autofix or some other style polyfill, then there is the main loader and then style-loader, which will pack your styles inside js. With this scheme, you import styles as a normal js file in project and they'll arrive inside js, and then, thanks to style-loader, they'll be dynamically written to the head in the form of a style tag.
If you need sourcemap for styles, you should pass sourceMap option in each loader.
Let's talk about postcss. You can write settings for it in webpack config file in loader options or you can write them in postcss.config.js file. This is an example of postcss.config.js with some settings for autoprefixer and flexbox. You can read about postcss, available plugins and settings for it in documents.
Going back to styles and style-loader, it may be convenient to collect css directly in js and deliver it together, but sometimes it can be useful to collect css into separate bundles.
This can be done with webpack-extract-text-plugin. It is used approximately like this, we add plug-in and loader where we specify that for styles we want to use ExtractTextPlugin, and then we specify what loader we want to use inside of it.
Thus, we can use files of various formats in the project, and collect them into separate bundles. You can see how to set up several different exports and what else ExtractTextPlugin can do in the documentation.
Other interesting thing in a new webpack is that you can use other files as an entry point, not just js. You'll probably need to use ExtractTextPlugin or something like that, but overall, You can try to use it in your project.
Another thing that you can do in webpack is optimize images.
So small jpg png and gif can be linearized with url-loader, and svg with svg-url-loader. Also you can optimize all images with image-webpack-loader by setting loader with enforce: 'pre' options, which will tell webpack that this loader should be used before regular loaders.
Also you can optimise images in a new webpack version by using imagemin-webpack-plugin. In base case it can be used like this. For additional options look to the documentation.
For the remaining files, the most common thing to do is to simply copy them from src folder to dist folder.
Previously, this was done by using file-loader, and now you can use copy-webpack-plugin.
That's basically it. For additional information you can go to documentations.
And now let's look at your questions from technical chat.
Where to learn more?
concepts - this's what we have been passed; this's an initial level
configuration - this's a bit more advanced webpack settings
api - there is a very deep way to set options in webpack
guides - there is the same as the previous three links, but in step by step format
loaders/plugins - this is the reference for guidance for leaders and plugins; there you can find existing loaders plugins and documentation for them; and it's better to take a look in there before you start to write something by yourself
migrate - you probably won't need it, but it's a little help with migration from older versions
contribute - this is how to write something by yourself for webpack and share with community
How to build scss | sass | less | styl ?
We have already talked about that. Just use loaders for your language and that's it.
How to reduce weight?
You can try to dig around in the settings and play with uglifyjs, but rather it's better to look at the project, for example, by using the webpack-bundle-analyzer. This plugin will build a graph of dependencies and module sizes and it'll be possible to understand what can be thrown out to make project lighter.
If you need to use something, try to find several solutions and compare them by important indicators, including size.
How to speed up?
The question is not trivial, as well as wight one.
In general, you can read about speed configuration there.
In short, you can:
- break a code into chunk using CommonsChunksPlugin
- run on multiple processors, for example, using parallel-webpack, webpack-dev-server, webpack-hot-middleware or webpack-dev-middleware.
Hot Module Replacement + Redux?
If anyone doesn't know, Hot Module Replacement is such options of webpack to replace files during the development without reloading the entire page. More details about it can be found here.
In general, it's quite simple to turn on, by using hot parameter for devServer settings and a couple of plugins. It's also possible to make it work with redux. To do so you need to fix store and main component a little bit. And how to do this you can read in a second link.
How to split code into chunks?
Code can be automatically split into chunk by the frequency. To do this we need to add chunkFilename options and CommonsChunkPlugin. For additional information read documentations,
Your plugins/loaders?
First, most likely you don't need to write any of them by yourself, check the first two links.
Second, if you really need to write something, check the last three links.
In short, plugin is a regular js, where we export some class with constructor and apply method. When it's working, the compiler will be passed as a parameter for apply method. You can subscribe for different events of compiler and make some changes, but it's better to read documentation about it, because there're many things that you can do in plugin,
Loaders are written just as easily. We export a function that will take in src the path of the downloaded file and the context.
You can use different methods from context, for example, cacheable says that the result of this loader can be reused, and if there are multiple connections, or if the file has not changed since the last loading, the data can be taken from the cache.
Async returns a callback that should be called after the loader is done and it should be passed module.exports = ‘'; because leader must return the js modules.
It's useful to wrap loader code in promises.
If your loader return some text data or base64, you need to specify the export flag.row, otherwise webpack will try to read and use result of this loader as js.
That's it, here are some link with a set of materials that can be useful for you.
You can read more about webpack in the documentation.
And now you can ask some additional questions.