feat: support for Gatsby v5 (#547)

* chore: add demo site for Gatsby v5

Include .nvmrc files in both demos to specify minimum node versions.

* test: remove ignore command in order to test builds

* test: revert commenting out of 'ignore' in the netlify.toml

* test: update minimum version of react to 18

* test: comment out the ignore

* refactor: move reach-router to prod dependency

* chore(deps): update deps

* refactor: add react as dev dep for gatsby/reach-router

* style: 🔥 n/no-missing-import

* test: remove ignore for testing purposes

* fix: add logic to determine which 'match' method to use in reach-router

* style: lint

* chore(deps): use gatsby-plugin-netlify version containing gatsby v5 updates

* test: duplicate e2e tests

want to test them against both v4 and v5 of Gatsby

* test: update permissions

also update the github workflow yaml as it was using an invalid
value

* test: run sequentially rather than in parallel

the parallelization needs to happen within the GH containers instead

* test: update paths

Author: ericapisani

.eslintrc.js

@@ -10,6 +10,7 @@ module.exports = {
     // This is a duplicate of `import/no-duplicates` but can handle "import type"
     'no-duplicate-imports': 'off',
     'max-depth': ['error', 4],
+    'n/no-missing-import': 'off',
   },
   env: {
     jest: true,

.github/workflows/test.yml

@@ -35,7 +35,7 @@ jobs:
       - run: npm test
 
   build-mac:
-    runs-on: macOS-latest
+    runs-on: macos-latest
     if: github.ref_name == 'main'
     steps:
       - uses: actions/checkout@v3

plugin/test/fixtures/functions-without-gatsby-plugin/.env.development renamed to demo-v5/.env.development

@@ -0,0 +1,10 @@
+node_modules/
+.cache/
+public
+
+# Local Netlify folder
+.netlify/cache
+.netlify/functions
+
+netlify/functions/gatsby/functions
+deployment.json

plugin/test/fixtures/functions-without-gatsby-plugin/.env.production renamed to demo-v5/.env.production

@@ -0,0 +1 @@
+legacy-peer-deps=true

demo-v5/.gitignore

@@ -0,0 +1 @@
+lts/hydrogen

demo-v5/.npmrc

@@ -0,0 +1,233 @@
+---
+title: Hello World
+date: '2015-05-01T22:12:03.284Z'
+description: 'Hello World'
+---
+
+This is my first post on my new fake blog! How exciting!
+
+I'm sure I'll write a lot more interesting things in the future.
+
+Oh, and here's a great quote from this Wikipedia on
+[salted duck eggs](https://en.wikipedia.org/wiki/Salted_duck_egg).
+
+> A salted duck egg is a Chinese preserved food product made by soaking duck
+> eggs in brine, or packing each egg in damp, salted charcoal. In Asian
+> supermarkets, these eggs are sometimes sold covered in a thick layer of salted
+> charcoal paste. The eggs may also be sold with the salted paste removed,
+> wrapped in plastic, and vacuum packed. From the salt curing process, the
+> salted duck eggs have a briny aroma, a gelatin-like egg white and a
+> firm-textured, round yolk that is bright orange-red in color.
+
+![Chinese Salty Egg](./salty_egg.jpg)
+
+You can also write code blocks here!
+
+```js
+const saltyDuckEgg = 'chinese preserved food product'
+```
+
+| Number | Title                                    | Year |
+| :----- | :--------------------------------------- | ---: |
+| 1      | Harry Potter and the Philosopher’s Stone | 2001 |
+| 2      | Harry Potter and the Chamber of Secrets  | 2002 |
+| 3      | Harry Potter and the Prisoner of Azkaban | 2004 |
+
+[View raw (TEST.md)](https://raw.github.com/adamschwartz/github-markdown-kitchen-sink/master/README.md)
+
+This is a paragraph.
+
+    This is a paragraph.
+
+# Header 1
+
+## Header 2
+
+    Header 1
+    ========
+
+    Header 2
+    --------
+
+# Header 1
+
+## Header 2
+
+### Header 3
+
+#### Header 4
+
+##### Header 5
+
+###### Header 6
+
+    # Header 1
+    ## Header 2
+    ### Header 3
+    #### Header 4
+    ##### Header 5
+    ###### Header 6
+
+# Header 1
+
+## Header 2
+
+### Header 3
+
+#### Header 4
+
+##### Header 5
+
+###### Header 6
+
+    # Header 1 #
+    ## Header 2 ##
+    ### Header 3 ###
+    #### Header 4 ####
+    ##### Header 5 #####
+    ###### Header 6 ######
+
+> Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aliquam hendrerit mi
+> posuere lectus. Vestibulum enim wisi, viverra nec, fringilla in, laoreet
+> vitae, risus.
+
+    > Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
+
+> ## This is a header.
+>
+> 1. This is the first list item.
+> 2. This is the second list item.
+>
+> Here's some example code:
+>
+>     Markdown.generate();
+
+    > ## This is a header.
+    > 1. This is the first list item.
+    > 2. This is the second list item.
+    >
+    > Here's some example code:
+    >
+    >     Markdown.generate();
+
+- Red
+- Green
+- Blue
+
+* Red
+* Green
+* Blue
+
+- Red
+- Green
+- Blue
+
+```markdown
+- Red
+- Green
+- Blue
+
+* Red
+* Green
+* Blue
+
+- Red
+- Green
+- Blue
+```
+
+- `code goes` here in this line
+- **bold** goes here
+
+```markdown
+- `code goes` here in this line
+- **bold** goes here
+```
+
+1. Buy flour and salt
+1. Mix together with water
+1. Bake
+
+```markdown
+1. Buy flour and salt
+1. Mix together with water
+1. Bake
+```
+
+1. `code goes` here in this line
+1. **bold** goes here
+
+```markdown
+1. `code goes` here in this line
+1. **bold** goes here
+```
+
+Paragraph:
+
+    Code
+
+<!-- -->
+
+    Paragraph:
+
+        Code
+
+---
+
+---
+
+---
+
+---
+
+---
+
+    * * *
+
+    ***
+
+    *****
+
+    - - -
+
+    ---------------------------------------
+
+This is [an example](http://example.com 'Example') link.
+
+[This link](http://example.com) has no title attr.
+
+This is [an example][id] reference-style link.
+
+[id]: http://example.com 'Optional Title'
+
+    This is [an example](http://example.com "Example") link.
+
+    [This link](http://example.com) has no title attr.
+
+    This is [an example] [id] reference-style link.
+
+    [id]: http://example.com "Optional Title"
+
+_single asterisks_
+
+_single underscores_
+
+**double asterisks**
+
+**double underscores**
+
+    *single asterisks*
+
+    _single underscores_
+
+    **double asterisks**
+
+    __double underscores__
+
+This paragraph has some `code` in it.
+
+    This paragraph has some `code` in it.
+
+![Alt Text](https://placehold.it/200x50 'Image Title')
+
+    ![Alt Text](https://placehold.it/200x50 "Image Title")