fix: prevent gatsby file detection from breaking path field

gatsby/onCreateNode.js

@@ -6,6 +6,8 @@
 
 'use strict';
 
+const path = require('path');
+
 // Parse date information out of blog post filename.
 const BLOG_POST_FILENAME_REGEX = /([0-9]+)\-([0-9]+)\-([0-9]+)\-(.+)\.md$/;
 
@@ -30,7 +32,7 @@ module.exports = exports.onCreateNode = ({node, actions, getNode}) => {
   switch (node.internal.type) {
     case 'MarkdownRemark':
       const {permalink, redirect_from} = node.frontmatter;
-      const {relativePath} = getNode(node.parent);
+      const {relativePath, sourceInstanceName} = getNode(node.parent);
 
       let slug = permalink;
 
@@ -71,10 +73,11 @@ module.exports = exports.onCreateNode = ({node, actions, getNode}) => {
       });
 
       // Used to generate a GitHub edit link.
+      // this presumes that the name in gastby-config.js refers to parent folder
       createNodeField({
         node,
         name: 'path',
-        value: relativePath,
+        value: path.join(sourceInstanceName, relativePath),
       });
 
       // Used by createPages() above to register redirects.

src/components/MarkdownPage/MarkdownPage.js

@@ -112,7 +112,7 @@ const MarkdownPage = ({
                   <div css={{marginTop: 80}}>
                     <a
                       css={sharedStyles.articleLayout.editLink}
-                      href={`https://github.com/reactjs/reactjs.org/tree/master/content/${
+                      href={`https://github.com/reactjs/reactjs.org/tree/master/${
                         markdownRemark.fields.path
                       }`}>
                       Edit this page

src/pages/docs/error-decoder.html.js

@@ -107,9 +107,7 @@ export const pageQuery = graphql`
     markdownRemark(fields: {slug: {eq: $slug}}) {
       html
       fields {
-        path {
-          id
-        }
+        path
       }
       frontmatter {
         title

src/templates/blog.js

@@ -58,9 +58,7 @@ export const pageQuery = graphql`
       }
       fields {
         date(formatString: "MMMM DD, YYYY")
-        path {
-          id
-        }
+        path
         slug
       }
     }

src/templates/community.js

@@ -33,9 +33,7 @@ export const pageQuery = graphql`
         prev
       }
       fields {
-        path {
-          id
-        }
+        path
         slug
       }
     }

src/templates/docs.js

@@ -38,9 +38,7 @@ export const pageQuery = graphql`
         prev
       }
       fields {
-        path {
-          id
-        }
+        path
         slug
       }
     }

src/templates/tutorial.js

@@ -36,9 +36,7 @@ export const pageQuery = graphql`
         prev
       }
       fields {
-        path {
-          id
-        }
+        path
         slug
       }
     }