Webpack-dev-server

See the development guide to get started.

It allows all kinds of modules to be updated at runtime without the need for a full refresh. This page focuses on implementation while the concepts page gives more details on how it works and why it's useful. This feature is great for productivity. All we need to do is update our webpack-dev-server configuration, and use webpack's built-in HMR plugin. We'll also remove the entry point for print.

Webpack-dev-server

Sponsor webpack and get apparel from the official shop! All proceeds go to our open collective! See the development guide to get started. This page describes the options that affect the behavior of webpack-dev-server short: dev-server. This set of options is picked up by webpack-dev-server and can be used to change its behavior in various ways. If you're using dev-server through the Node. See here for an example of how to use webpack-dev-server through the Node. Be aware that when exporting multiple configurations only the devServer options for the first configuration will be taken into account and used for all the configurations in the array. HTML template is required to serve the bundle, usually it is an index. Make sure that script references are added into HTML, webpack-dev-server doesn't inject them automatically. Provides the ability to execute custom middleware after all other middleware internally within the server. To use this option with the CLI pass the --allowed-hosts option a comma-delimited string.

Check out its documentation for more advanced usages. Downloads Weekly Downloads 12, webpack-dev-server, Repository Git github.

Use webpack with a development server that provides live reloading. This should be used for development only. It uses webpack-dev-middleware under the hood, which provides fast in-memory access to the webpack assets. Note: While you can install and run webpack-dev-server globally, we recommend installing it locally. The easiest way to use it is with the webpack CLI. In the directory where your webpack.

See the "How to Develop? This page describes the options that affect the behavior of webpack-dev-server short: dev-server. This set of options is picked up by webpack-dev-server and can be used to change its behavior in various ways. If you're using dev-server through the Node. See here for an example of how to use webpack-dev-server through the Node. Provides the ability to execute custom middleware after all other middleware internally within the server. To use this option with the CLI pass the --allowed-hosts option a comma-delimited string. Provides the ability to execute custom middleware prior to all other middleware internally within the server. This could be used to define custom handlers, for example:.

Webpack-dev-server

In this guide, we'll dive into some of the best practices and utilities for building a production site or application. The goals of development and production builds differ greatly. In development , we want strong source mapping and a localhost server with live reloading or hot module replacement. In production , our goals shift to a focus on minified bundles, lighter weight source maps, and optimized assets to improve load time. With this logical separation at hand, we typically recommend writing separate webpack configurations for each environment. While we will separate the production and development specific bits out, note that we'll still maintain a "common" configuration to keep things DRY.

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This mode uses ws as a server, and native WebSockets on the client. Tell dev-server to watch the files served by the static. Remember; It's always much easier to answer questions that include your webpack. This is only necessary if you want to serve static files. Contributors sokra skipjack spacek33z charlespwd orteth01 byzyk EugeneHlushko Yiidiir Loonride dmohns EslamHiko digitaljohn. Enable gzip compression for everything served:. The browser application name is platform dependent. Here's a small example of how that might look: dev-server. This allows to specify how browser or other client communicates with the devServer. This could be used to define custom handlers, for example: webpack. It is possible to provide a function to inject conditionally:. It allows all kinds of modules to be updated at runtime without the need for a full refresh. You could do something like this: webpack. Make sure devServer. Enable devServer.

For proper usage and easier distribution of this configuration, webpack can be configured with webpack. Any parameters sent to the CLI will map to a corresponding parameter in the configuration file.

See the related API documentation for webpack-dev-server. When using automatic compilation of your code, you could run into issues when saving your files. This option lets you reduce the compilations in lazy mode. If devServer. Tells devServer to inject a client. By default it will use your current working directory to serve content. If you want to, modify your configuration like this: webpack. In these cases, use polling: webpack. In these cases, use polling:. Print Section. The object is passed to the underlying webpack-dev-middleware.