FAQ and Common Issues

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FAQ and Common Issues

How do I deploy my Encore Assets?

There are two important things to remember when deploying your assets.

1) Run encore production

Optimize your assets for production by running:

$ ./node_modules/.bin/encore production

That will minify your assets and make other performance optimizations. Yay!

But, what server should you run this command on? That depends on how you deploy. For example, you could execute this locally (or on a build server), and use rsync or something else to transfer the built files to your server. Or, you could put your files on your production server first (e.g. via a git pull) and then run this command on production (ideally, before traffic hits your code). In this case, you'll need to install Node.js on your production server.

2) Only Deploy the Built Assets

The only files that need to be deployed to your production servers are the final, built assets (e.g. the public/build directory). You do not need to install Node.js, deploy webpack.config.js, the node_modules directory or even your source asset files, unless you plan on running encore production on your production machine. Once your assets are built, these are the only thing that need to live on the production server.

Do I need to Install Node.js on my Production Server?

No, unless you plan to build your production assets on your production server, which is not recommended. See How do I deploy my Encore Assets?.

What Files Should I commit to git? And which should I Ignore?

You should commit all of your files to git, except for the node_modules/ directory and the built files. Your .gitignore file should include:

# whatever path you're passing to Encore.setOutputPath()

You should commit all of your source asset files, package.json and yarn.lock.

My App Lives under a Subdirectory

If your app does not live at the root of your web server (i.e. it lives under a subdirectory, like /myAppSubdir), you just need to configure that when calling Encore.setPublicPrefix():

// webpack.config.js
    // ...


-     .setPublicPath('/build')
+     // this is your *true* public path
+     .setPublicPath('/myAppSubdir/build')

+     // this is now needed so that your manifest.json keys are still `build/foo.js`
+     // i.e. you won't need to change anything in your Symfony app
+     .setManifestKeyPrefix('build')

If you're processing your assets through manifest.json, you're done! The manifest.json file will now include the subdirectory in the final paths:

    "build/app.js": "/myAppSubdir/build/app.123abc.js",
    "build/dashboard.css": "/myAppSubdir/build/dashboard.a4bf2d.css"

"jQuery is not defined" or "$ is not defined"

This error happens when your code (or some library that you are using) expects $ or jQuery to be a global variable. But, when you use Webpack and require('jquery'), no global variables are set.

The fix depends on if the error is happening in your code or inside some third-party code that you're using. See jQuery and Legacy Applications for the fix.

Uncaught ReferenceError: webpackJsonp is not defined

If you get this error, it's probably because you've just added a shared entry but you forgot to add a script tag for the new manifest.js file. See the information about the script tags in that section.

This dependency was not found: some-module in ./path/to/file.js

Usually, after you install a package via yarn, you can require / import it to use it. For example, after running yarn add respond.js, you try to require that module:


But, instead of working, you see an error:

This dependency was not found:

  • respond.js in ./assets/js/app.js

Typically, a package will "advertise" its "main" file by adding a main key to its package.json. But sometimes, old libraries won't have this. Instead, you'll need to specifically require the file you need. In this case, the file you should use is located at node_modules/respond.js/dest/respond.src.js. You can require this via:

// require a non-minified file whenever possible
This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.