How to Set Up Import Aliases for Gatsby

How to Set Up Import Aliases for Gatsby

In this post, we will be looking into how we can add import aliases to our gatsby site step by step. In this post, we will be looking into how we can add import aliases to our gatsby site step by step. The reason why we are setting up import aliases is more to do about readability and the look of our code when importing components from the import tree.

In this post, we will be looking into how we can add import aliases to our gatsby site step by step.

The reason why we are setting up import aliases is more to do about readability and the look of our code when importing components from the import tree.

What I mean by that, is if we look at the following example

import Subscribe from '../../../../../../../core/modules/newsletter/mixins/Subscribe'

This just looks downright ugly in my opinion, so how can we improve it?

We can do that by updating webpack config to include aliases for our main directories that we know are going to be the base for our components.

Once we go through all the steps from this post, the end results will look like the following below

import Subscribe from '@core/modules/newsletter/mixins/Subscribe'

Adding Aliases in Gatsby

Given that Gatsby uses Webpack as its core and does not expose the config by default, we can add custom Webpack config using Gatsby’s onCreateWebpackConfig API, this will result in the custom configs being merged allowing you to modify the default webpack config.

To add the custom webpack config we need to edit (or create the file if it doesn’t exist in the root of our project) gatsby-node.js and add the new configs into it.

Configuration

const path = require("path");
exports.onCreateWebpackConfig = ({ actions }) => {
  actions.setWebpackConfig({
    resolve: {
      alias: {
        "@components": path.resolve(__dirname, "src/components"),
        "@static": path.resolve(__dirname, "static")
      }
    }
  });
}

As we can see in the above snippet, actions object give us the option to use setWebpackConfig that takes our custom webpack config and merge it to Gatsby's webpack config.

In order to add new aliases, we are going to use webpack’s resolve alias which will allow us to use the newly created import aliased inside our components.

As you can see below, the end result after adding the new alias will look like this

import Layout from '@components/Layout';

gatsbyjs react programming webpack javascript

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