Merge pull request reactjs#262 from bvaughn/gatsby-remark-code-repls

Migrate to new Gatbsy plug-in: gatsby-remark-code-repls

Author: bvaughn

content/docs/hello-world.md

@@ -31,4 +31,4 @@ The next few sections will gradually introduce you to using React. We will exami
 
 React is a JavaScript library, and so it assumes you have a basic understanding of the JavaScript language. If you don't feel very confident, we recommend [refreshing your JavaScript knowledge](https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript) so you can follow along more easily.
 
-We also use some of the ES6 syntax in the examples. We try to use it sparingly because it's still relatively new, but we encourage you to get familiar with [arrow functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions), [classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes), [template literals](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Template_literals), [`let`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let), and [`const`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const) statements. You can use the [Babel REPL](babel-repl://es5-syntax-example) to check what ES6 code compiles to.
+We also use some of the ES6 syntax in the examples. We try to use it sparingly because it's still relatively new, but we encourage you to get familiar with [arrow functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions), [classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes), [template literals](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Template_literals), [`let`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let), and [`const`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const) statements. You can use the [Babel REPL](babel://es5-syntax-example) to check what ES6 code compiles to.

content/docs/jsx-in-depth.md

@@ -47,7 +47,7 @@ React.createElement(
 )
 ```
 
-If you want to test out how some specific JSX is converted into JavaScript, you can try out [the online Babel compiler](babel-repl://jsx-simple-example).
+If you want to test out how some specific JSX is converted into JavaScript, you can try out [the online Babel compiler](babel://jsx-simple-example).
 
 ## Specifying The React Element Type
 

content/docs/react-without-jsx.md

@@ -38,7 +38,7 @@ ReactDOM.render(
 );
 ```
 
-If you're curious to see more examples of how JSX is converted to JavaScript, you can try out [the online Babel compiler](babel-repl://jsx-simple-example).
+If you're curious to see more examples of how JSX is converted to JavaScript, you can try out [the online Babel compiler](babel://jsx-simple-example).
 
 The component can either be provided as a string, or as a subclass of `React.Component`, or a plain function for stateless components.
 

content/home/examples/a-simple-component.md

@@ -5,4 +5,4 @@ order: 0
 
 React components implement a `render()` method that takes input data and returns what to display. This example uses an XML-like syntax called JSX. Input data that is passed into the component can be accessed by `render()` via `this.props`.
 
-**JSX is optional and not required to use React.** Try the [Babel REPL](babel-repl://es5-syntax-example) to see the raw JavaScript code produced by the JSX compilation step.
+**JSX is optional and not required to use React.** Try the [Babel REPL](babel://es5-syntax-example) to see the raw JavaScript code produced by the JSX compilation step.

content/tutorial/tutorial.md

@@ -28,7 +28,7 @@ Once you get a little familiar with the game, feel free to close that tab, as we
 
 We'll assume some familiarity with HTML and JavaScript, but you should be able to follow along even if you haven't used them before.
 
-If you need a refresher on JavaScript, we recommend reading [this guide](https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript). Note that we're also using some features from ES6, a recent version of JavaScript. In this tutorial, we're using [arrow functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions), [classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes), [`let`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let), and [`const`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const) statements. You can use the [Babel REPL](babel-repl://es5-syntax-example) to check what ES6 code compiles to.
+If you need a refresher on JavaScript, we recommend reading [this guide](https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript). Note that we're also using some features from ES6, a recent version of JavaScript. In this tutorial, we're using [arrow functions](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions), [classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes), [`let`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let), and [`const`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const) statements. You can use the [Babel REPL](babel://es5-syntax-example) to check what ES6 code compiles to.
 
 ### How to Follow Along
 
@@ -129,7 +129,7 @@ return React.createElement('div', {className: 'shopping-list'},
 );
 ```
 
-[See full expanded version.](babel-repl://tutorial-expanded-version)
+[See full expanded version.](babel://tutorial-expanded-version)
 
 If you're curious, `createElement()` is described in more detail in the [API reference](/docs/react-api.html#createelement), but we won't be using it directly in this tutorial. Instead, we will keep using JSX.
 

gatsby-config.js

@@ -6,6 +6,8 @@
 
 'use strict';
 
+const {join} = require('path');
+
 module.exports = {
   siteMetadata: {
     title: 'React: A JavaScript library for building user interfaces',
@@ -57,15 +59,16 @@ module.exports = {
           },
           'gatsby-remark-autolink-headers',
           {
-            resolve: 'gatsby-remark-codepen-examples',
-            options: {
-              directory: 'examples',
-            },
-          },
-          {
-            resolve: 'gatsby-remark-babel-repl-link',
+            resolve: 'gatsby-remark-code-repls',
             options: {
-              directory: 'examples',
+              defaultText: 'Try it on CodePen',
+              directory: `${__dirname}/examples/`,
+              externals: [
+                `//unpkg.com/react/umd/react.development.js`,
+                `//unpkg.com/react-dom/umd/react-dom.development.js`,
+              ],
+              redirectTemplate: `${__dirname}/src/templates/codepen-example.js`,
+              target: '_blank',
             },
           },
           'gatsby-remark-use-jsx',

gatsby-node.js

@@ -167,24 +167,6 @@ exports.createPages = async ({graphql, boundActionCreators}) => {
     redirectInBrowser: true,
     toPath: newestBlogNode.fields.slug,
   });
-
-  // Create Codepen redirects.
-  // These use the Codepen prefill API to JIT-create Pens.
-  // https://blog.codepen.io/documentation/api/prefill/
-  const files = await recursiveReaddir('./examples');
-  files.forEach(file => {
-    const slug = file.substring(0, file.length - 3); // Trim extension
-    const code = readFileSync(file, 'utf8');
-
-    createPage({
-      path: slug,
-      component: resolve('./src/templates/codepen-example.js'),
-      context: {
-        code,
-        slug,
-      },
-    });
-  });
 };
 
 // Parse date information out of blog post filename.

package.json

@@ -40,6 +40,7 @@
     "gatsby-plugin-sharp": "^1.6.2",
     "gatsby-plugin-twitter": "^1.0.10",
     "gatsby-remark-autolink-headers": "^1.4.4",
+    "gatsby-remark-code-repls": "^1.0.2",
     "gatsby-remark-copy-linked-files": "^1.5.2",
     "gatsby-remark-images": "^1.5.11",
     "gatsby-remark-prismjs": "^1.2.1",