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What do webpack externals tell webpack to exclude?


Asked by Stevie Sellers on Dec 14, 2021 FAQ



Webpack externals tell Webpack to exclude a certain import from the bundle. Often externals are used to exclude imports that will be loaded via CDN. For example, suppose you are implementing server-side rendering with Vue and Express, but your client-side code imports Vue via a CDN. Suppose you have the below component.js file:
In respect to this,
Webpack externals tell Webpack to exclude a certain import from the bundle. Often externals are used to exclude imports that will be loaded via CDN. For example, suppose you are implementing server-side rendering with Vue and Express, but your client-side code imports Vue via a CDN.
Additionally, One tricky name in the Webpack world is “Webpack externals”. Webpack externals are simply variables that are declared outside of Webpack (e.g. imported in a script tag in an HTML document) and then made available for use within a Webpack bundle.
In this manner,
Webpack allows you to define externals - modules that should not be bundled. When bundling with Webpack for the backend - you usually don't want to bundle its node_modules dependencies. This library creates an externals function that ignores node_modules when bundling in Webpack.
And,
Webpack is one of the available module bundlers that processes JavaScript code, as well as all static assets, such as stylesheets, images, and fonts, into a bundled file. Processing can include all the necessary tasks for managing and optimizing code dependencies, such as compilation, concatenation, minification, and compression.