Initial commit

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# dotenv environment variable files
+.env*
+
+# gatsby files
+.cache/
+public
+
+# Mac files
+.DS_Store
+
+# Yarn
+yarn-error.log
+.pnp/
+.pnp.js
+# Yarn Integrity file
+.yarn-integrity

LICENSE

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+MIT License
+
+Copyright (c) 2021 Terry Butler
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# gatsby-source-filesystem-markdown-name
+
+Adds a new node field called "name" designed to filter on a directory referenced by gatsby-source-filesystem:
+
+## Install
+
+```
+npm i gatsby-source-filesystem-markdown-name
+```
+
+or
+
+```
+yarn add gatsby-source-filesystem-markdown-name
+```
+
+## Example gatsby-config.js
+
+```javascript
+  plugins: [
+    {
+      resolve: `gatsby-source-filesystem`,
+      options: {
+        path: `${__dirname}/src/content/posts/`,
+        name: 'posts',
+      },
+    },
+    {
+      resolve: `gatsby-source-filesystem`,
+      options: {
+        path: `${__dirname}/src/content/pages/`,
+        name: 'pages',
+      },
+    },
+    'gatsby-source-filesystem-markdown-name',
+  ]
+```
+
+# Example GraphQL Query
+
+```graphql
+query MyQuery {
+  allMarkdownRemark(filter: {fields: {sourceName: {eq: "posts"}}}) {
+    edges {
+      node {
+        fields {
+          slug
+          sourceName
+        }
+      }
+    }
+  }
+}
+```

gatsby-node.js

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+/**
+ * Implement Gatsby's Node APIs in this file.
+ *
+ * See: https://www.gatsbyjs.com/docs/node-apis/
+ */
+
+exports.onCreateNode = ({ node, getNode, actions }) => {
+
+    const { createNodeField } = actions
+
+    if (node.internal.type !== 'MarkdownRemark') {
+        return;
+    }
+
+    const fileNode = getNode(node.parent);
+
+    createNodeField({
+        node,
+        name: 'sourceName',
+        value: fileNode.sourceInstanceName,
+    });
+};

index.js

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+// noop

package.json

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+{
+  "name": "gatsby-source-filesystem-markdown-name",
+  "version": "1.0.0",
+  "description": "Exposes a new node field called name to allow filtering of separate folders using the gatsby-source-filesystem plugin",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build": "echo \"No build script setup\""
+  },
+  "keywords": [
+    "gatsby",
+    "gatsby-plugin",
+	"markdown",
+	"blog"
+  ],
+  "author": "Terry Butler",
+  "license": "MIT",
+  "homepage": "https://github.com/terryjbutler/gatsby-source-filesystem-markdown-name",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/terryjbutler/"
+  }
+}

yarn.lock

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+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+