8000 Explained how to build multiple configurations by javiereguiluz · Pull Request #9130 · symfony/symfony-docs · GitHub
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Jan 26, 2018
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Explained how to build multiple configurations #9130

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43 changes: 43 additions & 0 deletions frontend/encore/advanced-config.rst
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Expand Up @@ -40,5 +40,48 @@ But be careful not to accidentally override any config from Encore:
// BAD - this replaces any extensions added by Encore
// config.resolve.extensions = ['json'];

Defining Multiple Webpack Configurations
----------------------------------------

Webpack supports passing an `array of configurations`_, which are processed in
parallel. Webpack Encore includes a ``reset()`` object allowing to reset the
state of the current configuration to build a new one:

.. code-block:: javascript

// define the first configuration
Encore
.setOutputPath('web/build/')
.setPublicPath('/build')
.addEntry('app', './assets/js/main.js')
.addStyleEntry('global', './assets/css/global.scss')
.enableSassLoader()
.autoProvidejQuery()
.enableSourceMaps(!Encore.isProduction())
;

// build the first configuration
const firstConfig = Encore.getWebpackConfig();

// reset Encore to build the second config
Encore.reset();

// define the second configuration
Encore
.setOutputPath('web/build/')
.setPublicPath('/build')
.addEntry('mobile', './assets/js/mobile.js')
.addStyleEntry('mobile', './assets/css/mobile.less')
.enableLessLoader()
.enableSourceMaps(!Encore.isProduction())
;

// build the second configuration
const secondConfig = Encore.getWebpackConfig();

// export the final configuration as an array of multiple configurations
module.exports = [firstConfig, secondConfig];

.. _`configuration options`: https://webpack.js.org/configuration/
.. _`Webpack's watchOptions`: https://webpack.js.org/configuration/watch/#watchoptions
.. _`array of configurations`: https://github.com/webpack/docs/wiki/configuration#multiple-configurations
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