From bec9f024a994e4b9bb256843d0e574f71cf05b36 Mon Sep 17 00:00:00 2001
From: George Adams <georgeadams1995@gmail.com>
Date: Sat, 7 Oct 2023 10:44:36 +0100
Subject: [PATCH] improve types definitions

---
 gatsby-config.ts | 69 +++++++++++++-----------------------------------
 gatsby-node.ts   | 59 +++++++++--------------------------------
 2 files changed, 32 insertions(+), 96 deletions(-)

diff --git a/gatsby-config.ts b/gatsby-config.ts
index 4473d45f9..0977cfae7 100644
--- a/gatsby-config.ts
+++ b/gatsby-config.ts
@@ -8,72 +8,39 @@ import path from 'path'
 import adapter from 'gatsby-adapter-netlify'
 import locales from './locales/i18n'
 
-interface SiteMetadata {
-  title: string;
-  description: string;
-  author: string;
-  siteUrl: string;
-  social: {
-    twitter: string
-  }
-}
-
-interface AsciidocNode {
-  id: string;
-  document: {
-    title: string;
-  };
-  fields: {
-    slug: string;
-  };
-  html: string;
-}
+import type { GatsbyConfig } from 'gatsby'
+import type { MDXPage, AsciidocPage } from './src/types'
 
 interface LocalSearchNormalizerArgs {
   data: {
     allAsciidoc: {
-      edges: Array<{ node: AsciidocNode }>;
+      edges: Array<{ node: AsciidocPage }>;
     };
   };
 }
 
-interface MdxNode {
-  excerpt: string;
-  fields: {
-    slug: string;
-    postPath: string;
-  };
-  frontmatter: {
-    date: string;
-    title: string;
-  };
-}
+type SiteMetadata = GatsbyConfig['siteMetadata'] & {
+    siteUrl: string;
+};
 
 interface AllMdxQueryResult {
-  allMdx: {
-    totalCount: number;
-    edges: {
-      node: MdxNode;
-    }[];
-  };
+  allMdx: MDXPage;
   site: {
     siteMetadata: SiteMetadata;
   }
 }
 
-const metadata: SiteMetadata = {
-  title: 'Adoptium',
-  description: 'Eclipse Adoptium provides prebuilt OpenJDK binaries ...',
-  author: 'Eclipse Adoptium',
-  siteUrl: 'https://adoptium.net',
-  social: {
-    twitter: 'Adoptium'
-  }
-};
-
-module.exports = {
+const config: GatsbyConfig = {
   adapter: adapter(),
-  siteMetadata: metadata,
+  siteMetadata: {
+    title: 'Adoptium',
+    description: 'Eclipse Adoptium provides prebuilt OpenJDK binaries ...',
+    author: 'Eclipse Adoptium',
+    siteUrl: 'https://adoptium.net',
+    social: {
+      twitter: 'Adoptium'
+    }
+  },
   plugins: [
     'gatsby-plugin-sitemap',
     {
@@ -325,3 +292,5 @@ module.exports = {
     }
   ]
 }
+
+export default config
diff --git a/gatsby-node.ts b/gatsby-node.ts
index b517e0328..d3dbbe6c3 100644
--- a/gatsby-node.ts
+++ b/gatsby-node.ts
@@ -9,7 +9,7 @@ import { promisify } from 'util'
 import { createFilePath } from 'gatsby-source-filesystem'
 import locales from './locales/i18n'
 import authors from './src/json/authors.json'
-import type { Actions, GatsbyNode, Node } from 'gatsby'
+import type { GatsbyNode, Node } from 'gatsby'
 
 import { localizedSlug, findKey, removeTrailingSlash } from './src/util/gatsby-node-helpers'
 const exec = util.promisify(execChild)
@@ -28,26 +28,6 @@ interface AdoptiumData {
   most_recent_feature_version: string;
 }
 
-interface Page {
-  path: string;
-  component: string;
-  context: {
-    locale: string;
-    defaultGitSHA?: string | null;
-    language: string;
-    i18n: {
-      routed: boolean;
-      originalPath: string;
-      path: string;
-      language: string;
-    };
-  };
-}
-
-interface Action {
-  createNodeField: (field: any) => void;
-}
-
 interface MdxNode extends Node {
   frontmatter: {
     date: string;
@@ -58,25 +38,6 @@ interface MdxNode extends Node {
   }
 }
 
-interface FileNode {
-  id: string;
-  relativePath: string;
-  absolutePath: string;
-}
-
-interface CreateNodeArgs {
-  node: Node;
-  actions: Action;
-  getNode: (id: string) => FileNode;
-  getNodes: () => FileNode[];
-}
-
-interface CreatePageArgs {
-  page: Page;
-  actions: Actions;
-  getNodes: () => Node[];
-}
-
 interface LocaleEntry {
   default?: boolean;
   locale: string;
@@ -160,9 +121,14 @@ export const sourceNodes: GatsbyNode['sourceNodes'] = async ({ actions, createNo
   createNode(MostRecentFeatureVersion)
 }
 
-export const onCreatePage = ({ page, actions, getNodes }: CreatePageArgs): void => {
+export const onCreatePage: GatsbyNode['onCreatePage'] = async ({ page, actions, getNodes }) => {
   const { createPage, deletePage } = actions
 
+  // Throw error if page.context is undefined
+  if (!page.context) {
+    throw new Error('Error retrieving page context')
+  }
+
   // Delete pages such as /about/index.de
   if (page.path.includes('index')) {
     return deletePage(page)
@@ -200,12 +166,12 @@ export const onCreatePage = ({ page, actions, getNodes }: CreatePageArgs): void
           // This context also gets passed to the src/components/layout file
           // This should ensure that the locale is available on every page
           context: {
-            ...page.context,
+            ...(page.context ? page.context : {}),
             locale,
             defaultGitSHA,
             language: lang,
             i18n: {
-              ...page.context.i18n,
+              ...(page.context?.i18n ? page.context.i18n : {}),
               routed: true,
               originalPath: page.path,
               path: removeTrailingSlash(localizedPath),
@@ -231,7 +197,7 @@ export const onCreatePage = ({ page, actions, getNodes }: CreatePageArgs): void
   })
 }
 
-export const onCreateNode = async ({ node, actions, getNode, getNodes }: CreateNodeArgs) => {
+export const onCreateNode: GatsbyNode['onCreateNode'] = async ({ node, actions, getNode, getNodes }) => {
   const { createNodeField } = actions
 
   if (node.internal.type === 'Asciidoc') {
@@ -240,9 +206,10 @@ export const onCreateNode = async ({ node, actions, getNode, getNodes }: CreateN
       // Handle the case where fetchFilePath is not found.
       throw new Error(`No file path found for node with parent ID: ${node.parent}`);
     }
-    const name = path.basename(fetchFilePath.relativePath, '.adoc')
 
-    const currentFileDir = path.dirname(fetchFilePath.absolutePath)
+    const name = path.basename(fetchFilePath.relativePath as string, '.adoc')
+
+    const currentFileDir = path.dirname(fetchFilePath.absolutePath as string);
     const partialDir = path.join(currentFileDir, '_partials')
 
     // Check if post.name is "index" -- because that's the file for default language