Merge pull request #1862 from bgoonz/preview

.gitignore

@@ -1,25 +1,4 @@
 
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 # Logs
 logs
 *.log

.npmrc

@@ -1 +1 @@
-{ "engines" : { "node" : ">=0.15" } }
+{ "engines" : { "node" : ">=0.14" } }

.nvmrc

@@ -1 +1 @@
-14.15.0
+v17.6.0

docs/content/DS_ALGO/algorithms/sets/permutations/README.md

@@ -9,18 +9,20 @@ It has to be exactly `4-7-2`.
 
 ## Permutations without repetitions
 
-A permutation, also called an “arrangement number” or “order”, is a rearrangement of
+A permutation, also called an "arrangement number" or "order", is a rearrangement of
 the elements of an ordered list `S` into a one-to-one correspondence with `S` itself.
 
 Below are the permutations of string `ABC`.
 
-`ABC ACB BAC BCA CBA CAB`
+```MATH
+ABC  ACB  BAC  BCA  CBA  CAB
+```
 
 Or for example the first three people in a running race: you can't be first and second.
 
 **Number of combinations**
 
-```
+```MATH
 n * (n-1) * (n -2) * ... * 1 = n!
 ```
 
@@ -29,11 +31,9 @@ n * (n-1) * (n -2) * ... * 1 = n!
 When repetition is allowed we have permutations with repetitions.
 For example the the lock below: it could be `333`.
 
-![Permutation Lock](https://www.mathsisfun.com/combinatorics/images/combination-lock.jpg)
+###### Number of combinations
 
-**Number of combinations**
-
-```
+```MATH
 n * n * n ... (r times) = n^r
 ```
 

gatsby-browser.js

@@ -3,27 +3,31 @@
  *
  * See: https://www.gatsbyjs.org/docs/browser-apis/
  */
+
 // onPreRouteUpdate() and onRouteUpdate() are called before onInitialClientRender,
 // use initialized flag to ensure that window.onGatsbyPreRouteUpdate() and
 // window.onGatsbyRouteUpdate() will not be called before
 // window.onGatsbyInitialClientRender() has run
 let initialized = false;
+
 exports.onInitialClientRender = () => {
-  initialized = true;
-  if ( 'onGatsbyInitialClientRender' in window && typeof window.onGatsbyInitialClientRender === 'function' ) {
-    window.onGatsbyInitialClientRender();
-  }
-  if ( 'onGatsbyRouteUpdate' in window && typeof window.onGatsbyRouteUpdate === 'function' ) {
-    window.onGatsbyRouteUpdate();
-  }
+    initialized = true;
+    if ('onGatsbyInitialClientRender' in window && typeof window.onGatsbyInitialClientRender === 'function') {
+        window.onGatsbyInitialClientRender();
+    }
+    if ('onGatsbyRouteUpdate' in window && typeof window.onGatsbyRouteUpdate === 'function') {
+        window.onGatsbyRouteUpdate();
+    }
 };
+
 exports.onRouteUpdate = () => {
-  if ( initialized && 'onGatsbyRouteUpdate' in window && typeof window.onGatsbyRouteUpdate === 'function' ) {
-    window.onGatsbyRouteUpdate();
-  }
+    if (initialized && 'onGatsbyRouteUpdate' in window && typeof window.onGatsbyRouteUpdate === 'function') {
+        window.onGatsbyRouteUpdate();
+    }
 };
+
 exports.onPreRouteUpdate = () => {
-  if ( initialized && 'onGatsbyPreRouteUpdate' in window && typeof window.onGatsbyPreRouteUpdate === 'function' ) {
-    window.onGatsbyPreRouteUpdate();
-  }
+    if (initialized && 'onGatsbyPreRouteUpdate' in window && typeof window.onGatsbyPreRouteUpdate === 'function') {
+        window.onGatsbyPreRouteUpdate();
+    }
 };

gatsby-config.js

@@ -1,44 +1,44 @@
 const siteMetadata = require( './site-metadata.json' )
 module.exports = {
-  pathPrefix: '/',
-  siteMetadata: siteMetadata,
-  plugins: [
-    `gatsby-plugin-react-helmet`,
-    `gatsby-source-data`,
-    `gatsby-transformer-remark`,
-    {
-      resolve: `gatsby-source-filesystem`,
-      options: {
-        name: `pages`,
-        path: `${__dirname}/src/pages`
-      }
-    },
-    {
-      resolve: `gatsby-plugin-disqus`,
-      options: {
-        shortname: `webdevhub-1`,
-      }
-    },
-    {
-      resolve: `gatsby-plugin-sass`,
-      options: {}
-    },
-    {
-      resolve: `gatsby-remark-page-creator`,
-      options: {}
-    },
-    {
-      resolve: `@stackbit/gatsby-plugin-menus`,
-      options: {
-        sourceUrlPath: `fields.url`,
-        pageContextProperty: `menus`,
-      },
-    },
-    {
-      resolve: `gatsby-plugin-disqus`,
-      options: {
-        shortname: `webdevhub-1`
-      }
-    },
-  ]
+    pathPrefix: '/',
+    siteMetadata: siteMetadata,
+    plugins: [
+        `gatsby-plugin-react-helmet`,
+        `gatsby-source-data`,
+        `gatsby-transformer-remark`,
+        {
+            resolve: `gatsby-source-filesystem`,
+            options: {
+                name: `pages`,
+                path: `${__dirname}/src/pages`
+            }
+        },
+        {
+            resolve: `gatsby-plugin-disqus`,
+            options: {
+                shortname: `webdevhub-1`
+            }
+        },
+        {
+            resolve: `gatsby-plugin-sass`,
+            options: {}
+        },
+        {
+            resolve: `gatsby-remark-page-creator`,
+            options: {}
+        },
+        {
+            resolve: `@stackbit/gatsby-plugin-menus`,
+            options: {
+                sourceUrlPath: `fields.url`,
+                pageContextProperty: `menus`
+            }
+        },
+        {
+            resolve: `gatsby-plugin-disqus`,
+            options: {
+                shortname: `webdevhub-1`
+            }
+        }
+    ]
 };

gatsby-ssr.js

@@ -8,14 +8,20 @@
 //<script src={withPrefix('js/analytics.js')} /> }
  * See: https://www.gatsbyjs.org/docs/ssr-apis/
  */
-const React = require( "react" );
-const withPrefix = require( "./src/utils/withPrefix" ).default;
-exports.onRenderBody = function ( {
-    setHeadComponents,
-    setPostBodyComponents
-} ) {
-    setHeadComponents( [
-    ] );
+/**
+ * Implement Gatsby's SSR (Server Side Rendering) APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/ssr-apis/
+ */
+
+const React = require("react");
+const withPrefix = require("./src/utils/withPrefix").default;
+
+exports.onRenderBody = function ({ setHeadComponents, setPostBodyComponents }) {
+
+    setHeadComponents([
+
+    ]);
     setPostBodyComponents( [ < React.Fragment >
         < script src={ withPrefix( 'js/addthis.js' ) } />
         < script src={ withPrefix( 'js/blm.js' ) } />

netlify.toml

@@ -2,5 +2,4 @@
 publish = "public"
 command = "npm run build"
 
-  [build.environment]
-  NODE_VERSION = "14"
+

package.json

@@ -27,15 +27,15 @@
         "marked": "0.6.1",
         "moment": "2.23.0",
         "moment-strftime": "0.5.0",
-        "node-sass": "4.10.0",
+        "node-sass": "4.14.0",
         "node-sass-utils": "1.1.2",
-        "react": "16.13.1",
-        "react-dom": "16.4.2",
+        "react": "16.5.1",
+        "react-dom": "16.13.1",
         "react-helmet": "5.2.1",
         "react-html-parser": "2.0.2",
         "react-script-tag": "1.1.2",
         "rehype-react": "3.0.2",
         "sprintf-js": "1.1.2",
-        "pdfcrowd":"5.4.0"
+        "pdfcrowd": "5.4.0"
     }
 }