Implement Webpack "resolve aliases" for project source paths

See GH-26 for details about the structure concept.

References:
  https://webpack.js.org/configuration/resolve/#resolve-alias

GH-31

.gatsby/onCreateBabelConfig.js

@@ -12,7 +12,6 @@
  * Allows to let plugins extend/mutate the project's Babel configuration.
  * @author Arctic Ice Studio <[email protected]>
  * @author Sven Greb <[email protected]>
- * @see https://gatsbyjs.org/docs/node-apis/#onCreateBabelConfig
  * @see https://babeljs.io
  * @since 0.1.0
  */
@@ -21,7 +20,8 @@
  * Implementation of the Gatsby Node `onCreateBabelConfig` API.
  *
  * @method onCreateBabelConfig
- * @param  {object} actions Collection functions provided by Gatsby used to manipulate the state of the build process.
+ * @param  {object} actions Collection of functions provided by Gatsby used to manipulate the state of the build
+ * process.
  * @see https://gatsbyjs.org/docs/node-apis/#onCreateBabelConfig
  * @see https://gatsbyjs.org/docs/actions
  * @since 0.1.0

.gatsby/onCreateWebpackConfig.js

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2018-present Arctic Ice Studio <[email protected]>
+ * Copyright (C) 2018-present Sven Greb <[email protected]>
+ *
+ * Project:    Nord Docs
+ * Repository: https://github.com/arcticicestudio/nord-docs
+ * License:    MIT
+ */
+
+/**
+ * @file Implementation of Gatsby Node `onCreateWebpackConfig` API.
+ * Allows to let plugins extend/mutate the project's webpack configuration.
+ * @author Arctic Ice Studio <[email protected]>
+ * @author Sven Greb <[email protected]>
+ * @see https://webpack.js.org
+ * @since 0.1.0
+ */
+
+const { resolve: resolvePath } = require("path");
+
+const r = m => resolvePath(__dirname, m);
+
+/**
+ * Implementation of the Gatsby Node `onCreateWebpackConfig` API.
+ *
+ * @method onCreateWebpackConfig
+ * @param  {object} actions Collection of functions provided by Gatsby used to manipulate the state of the build
+ * process.
+ * @see https://gatsbyjs.org/docs/node-apis/#onCreateWebpackConfig
+ * @see https://gatsbyjs.org/docs/actions/#setWebpackConfig
+ * @since 0.1.0
+ */
+const onCreateWebpackConfig = ({ actions }) => {
+  actions.setWebpackConfig({
+    resolve: {
+      alias: {
+        assets: r("../src/assets/"),
+        atoms: r("../src/components/atoms/"),
+        config: r("../src/config/"),
+        containers: r("../src/components/containers/"),
+        data: r("../src/data/"),
+        layouts: r("../src/components/layouts/"),
+        molecules: r("../src/components/molecules/"),
+        organisms: r("../src/components/organisms/"),
+        pages: r("../src/components/pages/"),
+        stores: r("../src/stores/"),
+        styles: r("../src/styles/"),
+        templates: r("../src/components/templates/"),
+        utils: r("../src/utils/")
+      }
+    }
+  });
+};
+
+module.exports = onCreateWebpackConfig;

gatsby-node.js

@@ -12,6 +12,8 @@
  * @author Arctic Ice Studio <[email protected]>
  * @author Sven Greb <[email protected]>
  * @see https://gatsbyjs.org/docs/node-apis
+ * @since 0.1.0
  */
 
 exports.onCreateBabelConfig = require("./.gatsby/onCreateBabelConfig");
+exports.onCreateWebpackConfig = require("./.gatsby/onCreateWebpackConfig");