chores(doc): Update documentation (#2145)

* Update app architecture with typesense

* Update readme

* Added local search

* replace diagram

* Update search page

README.md

@@ -72,7 +72,7 @@ Spec: Free-tier Oracle VM - Amsterdam - 2.4Ghz quad-core ARM64 CPU, 24GB RAM
 | Scrubbable/draggable scrollbar              | Yes    | Yes |
 | Support RAW (HEIC, HEIF, DNG, Apple ProRaw) | Yes    | Yes |
 | Metadata view (EXIF, map)                   | Yes    | Yes |
-| Search by metadata, objects and image tags  | Yes    | No  |
+| Search by metadata, objects and CLIP  | Yes    | No  |
 | Administrative functions (user management)  | N/A    | Yes |
 | Background backup                           | Yes    | N/A |
 | Virtual scroll                              | Yes    | Yes |

docs/docs/developer/architecture.md

@@ -20,7 +20,7 @@ Immich is a full-stack [TypeScript](https://www.typescriptlang.org/) application
 ### Web
 
 - [SvelteKit](https://kit.svelte.dev/)
-- [tailwindcss](https://tailwindcss.com/)
+- [Tailwindcss](https://tailwindcss.com/)
 
 ### Server
 
@@ -34,6 +34,8 @@ Immich is a full-stack [TypeScript](https://www.typescriptlang.org/) application
 
 - [PostgreSQL](https://www.postgresql.org/)
 - [Redis](https://redis.io/) for job queuing.
+- [Typesense](https://typesense.org/) for search.
+
 
 ### Web Server
 

docs/docs/features/search.md

@@ -1,16 +1,20 @@
 # Search
 
-:::warning Work In Progress
+Immich uses Typesense as the primary search database to enable high performance search mechanism. 
-Search is work-in-progress and subject to change. Stay tuned!
-:::
 
-## Search by Place
+Typesense is a powerful search engine that can be integrated with popular natural language processing (NLP) models like CLIP and SBERT to provide highly accurate and relevant search results. Here are some benefits of using Typesense integrated search for CLIP and SBERT:
 
-:::info
+Improved Search Accuracy: Typesense uses a combination of indexing, querying, and ranking algorithms to quickly and accurately retrieve relevant search results. When integrated with CLIP and SBERT, Typesense can leverage the semantic understanding and deep learning capabilities of these models to further improve the accuracy of search results.
-Searching is currently only implemented in the [Mobile App](/docs/features/mobile-app.mdx)
-:::
 
-Searching by the name of a city, state, or country is possible for assets with geolocation data and successful [Reverse Geocoding](/docs/features/reverse-geocoding.md).
+Faster Search Response Times: Typesense is optimized for lightning-fast search response times, making it ideal for applications that require near-instantaneous search results. By integrating with CLIP and SBERT, Typesense can reduce the time required to process complex search queries, making it even faster and more efficient.
 
-<img src={require('./img/reverse-geocoding-mobile1.png').default} width='33%' title='Reverse Geocoding' />
+Enhanced Semantic Search Capabilities: CLIP and SBERT are powerful NLP models that can extract the semantic meaning from text, enabling more nuanced search queries. By integrating with Typesense, these models can help to improve the accuracy of semantic search, enabling users to find the most relevant results based on the true meaning of their query.
-<img src={require('./img/reverse-geocoding-mobile2.png').default} width='33%' title='Reverse Geocoding' />
+
+Greater Search Flexibility: Typesense provides flexible search capabilities, including fuzzy search, partial search, enabling users to find the information they need quickly and easily. When integrated with CLIP and SBERT, Typesense can offer even greater flexibility, allowing users to refine their search queries using natural language and providing more accurate and relevant results. 
+
+(Generated by Chat-GPT4)
+
+Some search examples: 
+<img src={require('./img/search-ex-2.webp').default}  title='Search Example 1' />
+
+<img src={require('./img/search-ex-3.webp').default} title='Search Example 2' />

docs/docusaurus.config.js

@@ -1,70 +1,71 @@
 // @ts-check
 // Note: type annotations allow type checking and IDEs autocompletion
 
-const lightCodeTheme = require("prism-react-renderer/themes/github");
+const lightCodeTheme = require('prism-react-renderer/themes/github');
-const darkCodeTheme = require("prism-react-renderer/themes/dracula");
+const darkCodeTheme = require('prism-react-renderer/themes/dracula');
 
 /** @type {import('@docusaurus/types').Config} */
 const config = {
-  title: "Immich",
+  title: 'Immich',
   tagline:
-    "High performance self-hosted photo and video backup solution directly from your mobile phone",
+    'High performance self-hosted photo and video backup solution directly from your mobile phone',
-  url: "https://documentation.immich.app",
+  url: 'https://documentation.immich.app',
-  baseUrl: "/",
+  baseUrl: '/',
-  onBrokenLinks: "throw",
+  onBrokenLinks: 'throw',
-  onBrokenMarkdownLinks: "warn",
+  onBrokenMarkdownLinks: 'warn',
-  favicon: "img/favicon.png",
+  favicon: 'img/favicon.png',
 
   // GitHub pages deployment config.
   // If you aren't using GitHub pages, you don't need these.
-  organizationName: "immich-app", // Usually your GitHub org/user name.
+  organizationName: 'immich-app', // Usually your GitHub org/user name.
-  projectName: "immich", // Usually your repo name.
+  projectName: 'immich', // Usually your repo name.
-  deploymentBranch: "main",
+  deploymentBranch: 'main',
   // Even if you don't use internalization, you can use this field to set useful
   // metadata like html lang. For example, if your site is Chinese, you may want
   // to replace "en" with "zh-Hans".
   i18n: {
-    defaultLocale: "en",
+    defaultLocale: 'en',
-    locales: ["en"],
+    locales: ['en'],
   },
 
   plugins: [
     async function myPlugin(context, options) {
       return {
-        name: "docusaurus-tailwindcss",
+        name: 'docusaurus-tailwindcss',
         configurePostCss(postcssOptions) {
           // Appends TailwindCSS and AutoPrefixer.
-          postcssOptions.plugins.push(require("tailwindcss"));
+          postcssOptions.plugins.push(require('tailwindcss'));
-          postcssOptions.plugins.push(require("autoprefixer"));
+          postcssOptions.plugins.push(require('autoprefixer'));
           return postcssOptions;
         },
       };
     },
+    require.resolve('docusaurus-lunr-search'),
   ],
   presets: [
     [
-      "docusaurus-preset-openapi",
+      'docusaurus-preset-openapi',
       /** @type {import('docusaurus-preset-openapi').Options} */
       ({
         docs: {
           showLastUpdateAuthor: true,
           showLastUpdateTime: true,
 
-          sidebarPath: require.resolve("./sidebars.js"),
+          sidebarPath: require.resolve('./sidebars.js'),
           // Please change this to your repo.
           // Remove this to remove the "edit this page" links.
-          editUrl: "https://github.com/immich-app/immich/tree/main/docs/",
+          editUrl: 'https://github.com/immich-app/immich/tree/main/docs/',
         },
         api: {
-          path: "../server/immich-openapi-specs.json",
+          path: '../server/immich-openapi-specs.json',
-          routeBasePath: "/docs/api",
+          routeBasePath: '/docs/api',
         },
         // blog: {
         //   showReadingTime: true,
         //   editUrl: "https://github.com/immich-app/immich/tree/main/docs/",
         // },
         theme: {
-          customCss: require.resolve("./src/css/custom.css"),
+          customCss: require.resolve('./src/css/custom.css'),
         },
       }),
     ],
@@ -74,13 +75,13 @@ const config = {
     /** @type {import('@docusaurus/preset-classic').ThemeConfig} */
     ({
       colorMode: {
-        defaultMode: "dark",
+        defaultMode: 'dark',
       },
       announcementBar: {
-        id: "site_announcement_immich",
+        id: 'site_announcement_immich',
         content: `⚠️ The project is under <strong>very active</strong> development. Expect bugs and changes. Do not use it as <strong>the only way</strong> to store your photos and videos!`,
-        backgroundColor: "#593f00",
+        backgroundColor: '#593f00',
-        textColor: "#ffefc9",
+        textColor: '#ffefc9',
         isCloseable: false,
       },
       docs: {
@@ -90,72 +91,72 @@ const config = {
       },
       navbar: {
         logo: {
-          alt: "Immich University Logo",
+          alt: 'Immich University Logo',
-          src: "img/color-logo.png",
+          src: 'img/color-logo.png',
-          srcDark: "img/logo.png",
+          srcDark: 'img/logo.png',
         },
         items: [
           {
-            to: "/docs/overview/introduction",
+            to: '/docs/overview/introduction',
-            position: "right",
+            position: 'right',
-            label: "Docs",
+            label: 'Docs',
           },
           {
-            to: "/docs/api",
+            to: '/docs/api',
-            position: "right",
+            position: 'right',
-            label: "API",
+            label: 'API',
           },
           {
-            href: "https://github.com/immich-app/immich",
+            href: 'https://github.com/immich-app/immich',
-            label: "GitHub",
+            label: 'GitHub',
-            position: "right",
+            position: 'right',
           },
           {
-            href: "https://github.com/orgs/immich-app/projects/1",
+            href: 'https://github.com/orgs/immich-app/projects/1',
-            label: "Roadmap",
+            label: 'Roadmap',
-            position: "right",
+            position: 'right',
           },
         ],
       },
       footer: {
-        style: "light",
+        style: 'light',
         links: [
           {
-            title: "Overview",
+            title: 'Overview',
             items: [
               {
-                label: "Welcome",
+                label: 'Welcome',
-                to: "/docs/overview/introduction",
+                to: '/docs/overview/introduction',
               },
               {
-                label: "Installation",
+                label: 'Installation',
-                to: "/docs/install/requirements",
+                to: '/docs/install/requirements',
               },
             ],
           },
           {
-            title: "Community",
+            title: 'Community',
             items: [
               {
-                label: "Discord",
+                label: 'Discord',
-                href: "https://discord.com/invite/D8JsnBEuKb",
+                href: 'https://discord.com/invite/D8JsnBEuKb',
               },
             ],
           },
           {
-            title: "Links",
+            title: 'Links',
             items: [
               // {
               //   label: "Blog",
               //   to: "/blog",
               // },
               {
-                label: "GitHub",
+                label: 'GitHub',
-                href: "https://github.com/immich-app/immich",
+                href: 'https://github.com/immich-app/immich',
               },
               {
-                label: "Roadmap",
+                label: 'Roadmap',
-                href: "https://github.com/orgs/immich-app/projects/1",
+                href: 'https://github.com/orgs/immich-app/projects/1',
               },
             ],
           },
@@ -166,7 +167,7 @@ const config = {
         theme: lightCodeTheme,
         darkTheme: darkCodeTheme,
       },
-      image: "overview/img/feature-panel.png",
+      image: 'overview/img/feature-panel.png',
     }),
 };
 

docs/package-lock.json

@@ -13,6 +13,7 @@
         "@mdx-js/react": "^1.6.22",
         "autoprefixer": "^10.4.13",
         "clsx": "^1.2.1",
+        "docusaurus-lunr-search": "^2.3.2",
         "docusaurus-preset-openapi": "^0.6.3",
         "postcss": "^8.4.20",
         "prism-react-renderer": "^1.3.5",
@@ -3634,6 +3635,11 @@
       "resolved": "https://registry.npmjs.org/@xtuc/long/-/long-4.2.2.tgz",
       "integrity": "sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ=="
     },
+    "node_modules/abbrev": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
+      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
+    },
     "node_modules/accepts": {
       "version": "1.3.8",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
@@ -3903,6 +3909,11 @@
         "node": ">= 8"
       }
     },
+    "node_modules/aproba": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/aproba/-/aproba-2.0.0.tgz",
+      "integrity": "sha512-lYe4Gx7QT+MKGbDsA+Z+he/Wtef0BiwDOlK/XkBrdfsh9J/jPPXbX0tE9x9cl27Tmu5gg3QUbUrQYa/y+KOHPQ=="
+    },
     "node_modules/arg": {
       "version": "5.0.2",
       "resolved": "https://registry.npmjs.org/arg/-/arg-5.0.2.tgz",
@@ -3957,6 +3968,14 @@
         "node": ">= 4.0.0"
       }
     },
+    "node_modules/autocomplete.js": {
+      "version": "0.37.1",
+      "resolved": "https://registry.npmjs.org/autocomplete.js/-/autocomplete.js-0.37.1.tgz",
+      "integrity": "sha512-PgSe9fHYhZEsm/9jggbjtVsGXJkPLvd+9mC7gZJ662vVL5CRWEtm/mIrrzCx0MrNxHVwxD5d00UOn6NsmL2LUQ==",
+      "dependencies": {
+        "immediate": "^3.2.3"
+      }
+    },
     "node_modules/autoprefixer": {
       "version": "10.4.13",
       "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-10.4.13.tgz",
@@ -4148,6 +4167,15 @@
       "resolved": "https://registry.npmjs.org/batch/-/batch-0.6.1.tgz",
       "integrity": "sha512-x+VAiMRL6UPkx+kudNvxTl6hB2XNNCG2r+7wixVfIYwu/2HKRXimwQyaumLjMveWvT2Hkd/cAJw+QBMfJ/EKVw=="
     },
+    "node_modules/bcp-47-match": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/bcp-47-match/-/bcp-47-match-1.0.3.tgz",
+      "integrity": "sha512-LggQ4YTdjWQSKELZF5JwchnBa1u0pIQSZf5lSdOHEdbVP55h0qICA/FUp3+W99q0xqxYa1ZQizTUH87gecII5w==",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/big.js": {
       "version": "5.2.2",
       "resolved": "https://registry.npmjs.org/big.js/-/big.js-5.2.2.tgz",
@@ -4583,6 +4611,11 @@
       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-3.5.0.tgz",
       "integrity": "sha512-yH4RezKOGlOhxkmhbeNuC4eYZKAUsEaGtBuBzDDP1eFUKiccDWzBABxBfOx31IDwDIXMTxWuwAxUGModvkbuVw=="
     },
+    "node_modules/classnames": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/classnames/-/classnames-2.3.2.tgz",
+      "integrity": "sha512-CSbhY4cFEJRe6/GQzIk5qXZ4Jeg5pcsP7b5peFSDpffpe1cqjASH/n9UTjBwOp6XpMSTwQ8Za2K5V02ueA7Tmw=="
+    },
     "node_modules/clean-css": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.3.1.tgz",
@@ -4743,6 +4776,14 @@
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA=="
     },
+    "node_modules/color-support": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-support/-/color-support-1.1.3.tgz",
+      "integrity": "sha512-qiBjkpbMLO/HL68y+lh4q0/O1MZFj2RX6X/KmMa3+gJD3z+WwI1ZzDHysvqHGS3mP6mznPckpXmw1nI9cJjyRg==",
+      "bin": {
+        "color-support": "bin.js"
+      }
+    },
     "node_modules/colord": {
       "version": "2.9.3",
       "resolved": "https://registry.npmjs.org/colord/-/colord-2.9.3.tgz",
@@ -4887,6 +4928,11 @@
       "resolved": "https://registry.npmjs.org/consola/-/consola-2.15.3.tgz",
       "integrity": "sha512-9vAdYbHj6x2fLKC4+oPH0kFzY/orMZyG2Aj+kNylHxKGJ/Ed4dpNyAQYwJOdqO4zdM7XpVHmyejQDcQHrnuXbw=="
     },
+    "node_modules/console-control-strings": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+      "integrity": "sha512-ty/fTekppD2fIwRvnZAVdeOiGd1c7YXEixbgJTNzqcxJWKQnjJ/V1bNEEE6hygpM3WjwHFUVK6HTjWSzV4a8sQ=="
+    },
     "node_modules/content-disposition": {
       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
@@ -5278,6 +5324,11 @@
         "url": "https://github.com/sponsors/fb55"
       }
     },
+    "node_modules/css-selector-parser": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/css-selector-parser/-/css-selector-parser-1.4.1.tgz",
+      "integrity": "sha512-HYPSb7y/Z7BNDCOrakL4raGO2zltZkbeXyAd6Tg9obzix6QhzxCotdBl6VT0Dv4vZfJGVz3WL/xaEI9Ly3ul0g=="
+    },
     "node_modules/css-tree": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-1.1.3.tgz",
@@ -5664,6 +5715,18 @@
         "node": ">=8"
       }
     },
+    "node_modules/direction": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/direction/-/direction-1.0.4.tgz",
+      "integrity": "sha512-GYqKi1aH7PJXxdhTeZBFrg8vUBeKXi+cNprXsC1kpJcbcVnV9wBsrOu1cQEdG0WeQwlfHiy3XvnKfIrJ2R0NzQ==",
+      "bin": {
+        "direction": "cli.js"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/wooorm"
+      }
+    },
     "node_modules/dlv": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/dlv/-/dlv-1.1.3.tgz",
@@ -5685,6 +5748,53 @@
         "node": ">=6"
       }
     },
+    "node_modules/docusaurus-lunr-search": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/docusaurus-lunr-search/-/docusaurus-lunr-search-2.3.2.tgz",
+      "integrity": "sha512-Ngvm2kXwliWThqAThXI1912rOKHlFL7BjIc+OVNUfzkjpk5ar4TFEh+EUaaMOLw4V0BBko3CW0Ym7prqqm3jLQ==",
+      "dependencies": {
+        "autocomplete.js": "^0.37.0",
+        "classnames": "^2.2.6",
+        "gauge": "^3.0.0",
+        "hast-util-select": "^4.0.0",
+        "hast-util-to-text": "^2.0.0",
+        "hogan.js": "^3.0.2",
+        "lunr": "^2.3.8",
+        "lunr-languages": "^1.4.0",
+        "minimatch": "^3.0.4",
+        "object-assign": "^4.1.1",
+        "rehype-parse": "^7.0.1",
+        "to-vfile": "^6.1.0",
+        "unified": "^9.0.0",
+        "unist-util-is": "^4.0.2"
+      },
+      "engines": {
+        "node": ">= 8.10.0"
+      },
+      "peerDependencies": {
+        "@docusaurus/core": "^2.0.0-alpha.60 || ^2.0.0",
+        "react": "^16.8.4 || ^17",
+        "react-dom": "^16.8.4 || ^17"
+      }
+    },
+    "node_modules/docusaurus-lunr-search/node_modules/parse5": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-6.0.1.tgz",
+      "integrity": "sha512-Ofn/CTFzRGTTxwpNEs9PP93gXShHcTq255nzRYSKe8AkVpZY7e1fpmTfOyoIvjP5HG7Z2ZM7VS9PPhQGW2pOpw=="
+    },
+    "node_modules/docusaurus-lunr-search/node_modules/rehype-parse": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/rehype-parse/-/rehype-parse-7.0.1.tgz",
+      "integrity": "sha512-fOiR9a9xH+Le19i4fGzIEowAbwG7idy2Jzs4mOrFWBSJ0sNUgy0ev871dwWnbOo371SjgjG4pwzrbgSVrKxecw==",
+      "dependencies": {
+        "hast-util-from-parse5": "^6.0.0",
+        "parse5": "^6.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/unified"
+      }
+    },
     "node_modules/docusaurus-plugin-openapi": {
       "version": "0.6.3",
       "resolved": "https://registry.npmjs.org/docusaurus-plugin-openapi/-/docusaurus-plugin-openapi-0.6.3.tgz",
@@ -6689,6 +6799,43 @@
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.1.tgz",
       "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A=="
     },
+    "node_modules/gauge": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/gauge/-/gauge-3.0.2.tgz",
+      "integrity": "sha512-+5J6MS/5XksCuXq++uFRsnUd7Ovu1XenbeuIuNRJxYWjgQbPuFhT14lAvsWfqfAmnwluf1OwMjz39HjfLPci0Q==",
+      "dependencies": {
+        "aproba": "^1.0.3 || ^2.0.0",
+        "color-support": "^1.1.2",
+        "console-control-strings": "^1.0.0",
+        "has-unicode": "^2.0.1",
+        "object-assign": "^4.1.1",
+        "signal-exit": "^3.0.0",
+        "string-width": "^4.2.3",
+        "strip-ansi": "^6.0.1",
+        "wide-align": "^1.1.2"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/gauge/node_modules/emoji-regex": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A=="
+    },
+    "node_modules/gauge/node_modules/string-width": {
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+      "integrity": "sha512-HYPSb7y/Z7BNDCOrakL4raGO2zltZkbeXyAd6Tg9obzix6QhzxCotdBl6VT0Dv4vZfJGVz3WL/xaEI9Ly3ul0g=="
+    },
     "css-tree": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-1.1.3.tgz",
@@ -18268,6 +18644,11 @@
         "path-type": "^4.0.0"
       }
     },
+    "direction": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/direction/-/direction-1.0.4.tgz",
+      "integrity": "sha512-GYqKi1aH7PJXxdhTeZBFrg8vUBeKXi+cNprXsC1kpJcbcVnV9wBsrOu1cQEdG0WeQwlfHiy3XvnKfIrJ2R0NzQ=="
+    },
     "dlv": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/dlv/-/dlv-1.1.3.tgz",
@@ -18286,6 +18667,43 @@
         "@leichtgewicht/ip-codec": "^2.0.1"
       }
     },
+    "docusaurus-lunr-search": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/docusaurus-lunr-search/-/docusaurus-lunr-search-2.3.2.tgz",
+      "integrity": "sha512-Ngvm2kXwliWThqAThXI1912rOKHlFL7BjIc+OVNUfzkjpk5ar4TFEh+EUaaMOLw4V0BBko3CW0Ym7prqqm3jLQ==",
+      "requires": {
+        "autocomplete.js": "^0.37.0",
+        "classnames": "^2.2.6",
+        "gauge": "^3.0.0",
+        "hast-util-select": "^4.0.0",
+        "hast-util-to-text": "^2.0.0",
+        "hogan.js": "^3.0.2",
+        "lunr": "^2.3.8",
+        "lunr-languages": "^1.4.0",
+        "minimatch": "^3.0.4",
+        "object-assign": "^4.1.1",
+        "rehype-parse": "^7.0.1",
+        "to-vfile": "^6.1.0",
+        "unified": "^9.0.0",
+        "unist-util-is": "^4.0.2"
+      },
+      "dependencies": {
+        "parse5": {
+          "version": "6.0.1",
+          "resolved": "https://registry.npmjs.org/parse5/-/parse5-6.0.1.tgz",
+          "integrity": "sha512-Ofn/CTFzRGTTxwpNEs9PP93gXShHcTq255nzRYSKe8AkVpZY7e1fpmTfOyoIvjP5HG7Z2ZM7VS9PPhQGW2pOpw=="
+        },
+        "rehype-parse": {
+          "version": "7.0.1",
+          "resolved": "https://registry.npmjs.org/rehype-parse/-/rehype-parse-7.0.1.tgz",
+          "integrity": "sha512-fOiR9a9xH+Le19i4fGzIEowAbwG7idy2Jzs4mOrFWBSJ0sNUgy0ev871dwWnbOo371SjgjG4pwzrbgSVrKxecw==",
+          "requires": {
+            "hast-util-from-parse5": "^6.0.0",
+            "parse5": "^6.0.0"
+          }
+        }
+      }
+    },
     "docusaurus-plugin-openapi": {
       "version": "0.6.3",
       "resolved": "https://registry.npmjs.org/docusaurus-plugin-openapi/-/docusaurus-plugin-openapi-0.6.3.tgz",
@@ -19036,6 +19454,39 @@
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       "integrity": "sha512-yIovAzMX49sF8Yl58fSCWJ5svSLuaibPxXQJFLmBObTuCr0Mf1KiPopGM9NiFjiYBCbfaa2Fh6breQ6ANVTI0A=="
     },
+    "gauge": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/gauge/-/gauge-3.0.2.tgz",
+      "integrity": "sha512-+5J6MS/5XksCuXq++uFRsnUd7Ovu1XenbeuIuNRJxYWjgQbPuFhT14lAvsWfqfAmnwluf1OwMjz39HjfLPci0Q==",
+      "requires": {
+        "aproba": "^1.0.3 || ^2.0.0",
+        "color-support": "^1.1.2",
+        "console-control-strings": "^1.0.0",
+        "has-unicode": "^2.0.1",
+        "object-assign": "^4.1.1",
+        "signal-exit": "^3.0.0",
+        "string-width": "^4.2.3",
+        "strip-ansi": "^6.0.1",
+        "wide-align": "^1.1.2"
+      },
+      "dependencies": {
+        "emoji-regex": {
+          "version": "8.0.0",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+          "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A=="
+        },
+        "string-width": {
+          "version": "4.2.3",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+          "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+          "requires": {
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.1"
+          }
+        }
+      }
+    },
     "gensync": {
       "version": "1.0.0-beta.2",
       "resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz",
@@ -19266,6 +19717,11 @@
       "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.0.3.tgz",
       "integrity": "sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A=="
     },
+    "has-unicode": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
+      "integrity": "sha512-8Rf9Y83NBReMnx0gFzA8JImQACstCYWUplepDa9xprwwtmgEZUF0h/i5xSA625zB/I37EtrswSST6OXxwaaIJQ=="
+    },
     "has-yarn": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/has-yarn/-/has-yarn-2.1.0.tgz",
@@ -19298,6 +19754,16 @@
         "web-namespaces": "^1.0.0"
       }
     },
+    "hast-util-has-property": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/hast-util-has-property/-/hast-util-has-property-1.0.4.tgz",
+      "integrity": "sha512-ghHup2voGfgFoHMGnaLHOjbYFACKrRh9KFttdCzMCbFoBMJXiNi2+XTrPP8+q6cDJM/RSqlCfVWrjp1H201rZg=="
+    },
+    "hast-util-is-element": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/hast-util-is-element/-/hast-util-is-element-1.1.0.tgz",
+      "integrity": "sha512-oUmNua0bFbdrD/ELDSSEadRVtWZOf3iF6Lbv81naqsIV99RnSCieTbWuWCY8BAeEfKJTKl0gRdokv+dELutHGQ=="
+    },
     "hast-util-parse-selector": {
       "version": "2.2.5",
       "resolved": "https://registry.npmjs.org/hast-util-parse-selector/-/hast-util-parse-selector-2.2.5.tgz",
@@ -19327,6 +19793,27 @@
         }
       }
     },
+    "hast-util-select": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/hast-util-select/-/hast-util-select-4.0.2.tgz",
+      "integrity": "sha512-8EEG2//bN5rrzboPWD2HdS3ugLijNioS1pqOTIolXNf67xxShYw4SQEmVXd3imiBG+U2bC2nVTySr/iRAA7Cjg==",
+      "requires": {
+        "bcp-47-match": "^1.0.0",
+        "comma-separated-tokens": "^1.0.0",
+        "css-selector-parser": "^1.0.0",
+        "direction": "^1.0.0",
+        "hast-util-has-property": "^1.0.0",
+        "hast-util-is-element": "^1.0.0",
+        "hast-util-to-string": "^1.0.0",
+        "hast-util-whitespace": "^1.0.0",
+        "not": "^0.1.0",
+        "nth-check": "^2.0.0",
+        "property-information": "^5.0.0",
+        "space-separated-tokens": "^1.0.0",
+        "unist-util-visit": "^2.0.0",
+        "zwitch": "^1.0.0"
+      }
+    },
     "hast-util-to-parse5": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/hast-util-to-parse5/-/hast-util-to-parse5-6.0.0.tgz",
@@ -19339,6 +19826,26 @@
         "zwitch": "^1.0.0"
       }
     },
+    "hast-util-to-string": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/hast-util-to-string/-/hast-util-to-string-1.0.4.tgz",
+      "integrity": "sha512-eK0MxRX47AV2eZ+Lyr18DCpQgodvaS3fAQO2+b9Two9F5HEoRPhiUMNzoXArMJfZi2yieFzUBMRl3HNJ3Jus3w=="
+    },
+    "hast-util-to-text": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/hast-util-to-text/-/hast-util-to-text-2.0.1.tgz",
+      "integrity": "sha512-8nsgCARfs6VkwH2jJU9b8LNTuR4700na+0h3PqCaEk4MAnMDeu5P0tP8mjk9LLNGxIeQRLbiDbZVw6rku+pYsQ==",
+      "requires": {
+        "hast-util-is-element": "^1.0.0",
+        "repeat-string": "^1.0.0",
+        "unist-util-find-after": "^3.0.0"
+      }
+    },
+    "hast-util-whitespace": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/hast-util-whitespace/-/hast-util-whitespace-1.0.4.tgz",
+      "integrity": "sha512-I5GTdSfhYfAPNztx2xJRQpG8cuDSNt599/7YUn7Gx/WxNMsG+a835k97TDkFgk123cwjfwINaZknkKkphx/f2A=="
+    },
     "hastscript": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/hastscript/-/hastscript-6.0.0.tgz",
@@ -19374,6 +19881,15 @@
         "value-equal": "^1.0.1"
       }
     },
+    "hogan.js": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/hogan.js/-/hogan.js-3.0.2.tgz",
+      "integrity": "sha512-RqGs4wavGYJWE07t35JQccByczmNUXQT0E12ZYV1VKYu5UiAU9lsos/yBAcf840+zrUQQxgVduCR5/B8nNtibg==",
+      "requires": {
+        "mkdirp": "0.3.0",
+        "nopt": "1.0.10"
+      }
+    },
     "hoist-non-react-statics": {
       "version": "3.3.2",
       "resolved": "https://registry.npmjs.org/hoist-non-react-statics/-/hoist-non-react-statics-3.3.2.tgz",
@@ -19589,6 +20105,11 @@
         "queue": "6.0.2"
       }
     },
+    "immediate": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/immediate/-/immediate-3.3.0.tgz",
+      "integrity": "sha512-HR7EVodfFUdQCTIeySw+WDRFJlPcLOJbXfwwZ7Oom6tjsvZ3bOkCDJHehQC3nxJrv7+f9XecwazynjU8e4Vw3Q=="
+    },
     "immer": {
       "version": "9.0.16",
       "resolved": "https://registry.npmjs.org/immer/-/immer-9.0.16.tgz",
@@ -20162,6 +20683,16 @@
         "yallist": "^4.0.0"
       }
     },
+    "lunr": {
+      "version": "2.3.9",
+      "resolved": "https://registry.npmjs.org/lunr/-/lunr-2.3.9.tgz",
+      "integrity": "sha512-zTU3DaZaF3Rt9rhN3uBMGQD3dD2/vFQqnvZCDv4dl5iOzq2IZQqTxu90r4E5J+nP70J3ilqVCrbho2eWaeW8Ow=="
+    },
+    "lunr-languages": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/lunr-languages/-/lunr-languages-1.10.0.tgz",
+      "integrity": "sha512-BBjKKcwrieJlzwwc9M5H/MRXGJ2qyOSDx/NXYiwkuKjiLOOoouh0WsDzeqcLoUWcX31y7i8sb8IgsZKObdUCkw=="
+    },
     "make-dir": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
@@ -20374,6 +20905,11 @@
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.7.tgz",
       "integrity": "sha512-bzfL1YUZsP41gmu/qjrEk0Q6i2ix/cVeAhbCbqH9u3zYutS1cLg00qhrD0M2MVdCcx4Sc0UpP2eBWo9rotpq6g=="
     },
+    "mkdirp": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.3.0.tgz",
+      "integrity": "sha512-OHsdUcVAQ6pOtg5JYWpCBo9W/GySVuwvP9hueRMW7UqshC0tbfzLv8wjySTPm3tfUZ/21CE9E1pJagOA91Pxew=="
+    },
     "monaco-editor": {
       "version": "0.31.1",
       "resolved": "https://registry.npmjs.org/monaco-editor/-/monaco-editor-0.31.1.tgz",
@@ -20461,6 +20997,14 @@
       "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.6.tgz",
       "integrity": "sha512-PiVXnNuFm5+iYkLBNeq5211hvO38y63T0i2KKh2KnUs3RpzJ+JtODFjkD8yjLwnDkTYF1eKXheUwdssR+NRZdg=="
     },
+    "nopt": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npmjs.org/nopt/-/nopt-1.0.10.tgz",
+      "integrity": "sha512-NWmpvLSqUrgrAC9HCuxEvb+PSloHpqVu+FqcO4eeF2h5qYRhA7ev6KvelyQAKtegUbC6RypJnlEOhd8vloNKYg==",
+      "requires": {
+        "abbrev": "1"
+      }
+    },
     "normalize-path": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-3.0.0.tgz",
@@ -20476,6 +21020,11 @@
       "resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-6.1.0.tgz",
       "integrity": "sha512-DlL+XwOy3NxAQ8xuC0okPgK46iuVNAK01YN7RueYBqqFeGsBjV9XmCAzAdgt+667bCl5kPh9EqKKDwnaPG1I7A=="
     },
+    "not": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/not/-/not-0.1.0.tgz",
+      "integrity": "sha512-5PDmaAsVfnWUgTUbJ3ERwn7u79Z0dYxN9ErxCpVJJqe2RK0PJ3z+iFUxuqjwtlDDegXvtWoxD/3Fzxox7tFGWA=="
+    },
     "npm-run-path": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-4.0.1.tgz",
@@ -23447,6 +23996,15 @@
         "is-number": "^7.0.0"
       }
     },
+    "to-vfile": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/to-vfile/-/to-vfile-6.1.0.tgz",
+      "integrity": "sha512-BxX8EkCxOAZe+D/ToHdDsJcVI4HqQfmw0tCkp31zf3dNP/XWIAjU4CmeuSwsSoOzOTqHPOL0KUzyZqJplkD0Qw==",
+      "requires": {
+        "is-buffer": "^2.0.0",
+        "vfile": "^4.0.0"
+      }
+    },
     "toidentifier": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
@@ -23588,6 +24146,14 @@
       "resolved": "https://registry.npmjs.org/unist-builder/-/unist-builder-2.0.3.tgz",
       "integrity": "sha512-f98yt5pnlMWlzP539tPc4grGMsFaQQlP/vM396b00jngsiINumNmsY8rkXjfoi1c6QaM8nQ3vaGDuoKWbe/1Uw=="
     },
+    "unist-util-find-after": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/unist-util-find-after/-/unist-util-find-after-3.0.0.tgz",
+      "integrity": "sha512-ojlBqfsBftYXExNu3+hHLfJQ/X1jYY/9vdm4yZWjIbf0VuWF6CRufci1ZyoD/wV2TYMKxXUoNuoqwy+CkgzAiQ==",
+      "requires": {
+        "unist-util-is": "^4.0.0"
+      }
+    },
     "unist-util-generated": {
       "version": "1.1.6",
       "resolved": "https://registry.npmjs.org/unist-util-generated/-/unist-util-generated-1.1.6.tgz",
@@ -24241,6 +24807,31 @@
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
       "integrity": "sha512-B+enWhmw6cjfVC7kS8Pj9pCrKSc5txArRyaYGe088shv/FGWH+0Rjx/xPgtsWfsUtS27FkP697E4DDhgrgoc0Q=="
     },
+    "wide-align": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
+      "integrity": "sha512-eDMORYaPNZ4sQIuuYPDHdQvf4gyCF9rEEV/yPxGfwPkRodwEgiMUUXTx/dex+Me0wxx53S+NgUHaP7y3MGlDmg==",
+      "requires": {
+        "string-width": "^1.0.2 || 2 || 3 || 4"
+      },
+      "dependencies": {
+        "emoji-regex": {
+          "version": "8.0.0",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
+          "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A=="
+        },
+        "string-width": {
+          "version": "4.2.3",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+          "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+          "requires": {
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.1"
+          }
+        }
+      }
+    },
     "widest-line": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-4.0.1.tgz",

docs/package.json

@@ -20,6 +20,7 @@
     "@mdx-js/react": "^1.6.22",
     "autoprefixer": "^10.4.13",
     "clsx": "^1.2.1",
+    "docusaurus-lunr-search": "^2.3.2",
     "docusaurus-preset-openapi": "^0.6.3",
     "postcss": "^8.4.20",
     "prism-react-renderer": "^1.3.5",

docs/src/theme/SearchBar/DocSearch.js

@@ -0,0 +1,297 @@
+import Hogan from "hogan.js";
+import LunrSearchAdapter from "./lunar-search";
+import autocomplete from "autocomplete.js";
+import templates from "./templates";
+import utils from "./utils";
+import $ from "autocomplete.js/zepto";
+
+class DocSearch {
+    constructor({
+        searchDocs,
+        searchIndex,
+        inputSelector,
+        debug = false,
+        baseUrl = '/',
+        queryDataCallback = null,
+        autocompleteOptions = {
+            debug: false,
+            hint: false,
+            autoselect: true
+        },
+        transformData = false,
+        queryHook = false,
+        handleSelected = false,
+        enhancedSearchInput = false,
+        layout = "collumns"
+    }) {
+        this.input = DocSearch.getInputFromSelector(inputSelector);
+        this.queryDataCallback = queryDataCallback || null;
+        const autocompleteOptionsDebug =
+            autocompleteOptions && autocompleteOptions.debug
+                ? autocompleteOptions.debug
+                : false;
+        // eslint-disable-next-line no-param-reassign
+        autocompleteOptions.debug = debug || autocompleteOptionsDebug;
+        this.autocompleteOptions = autocompleteOptions;
+        this.autocompleteOptions.cssClasses =
+            this.autocompleteOptions.cssClasses || {};
+        this.autocompleteOptions.cssClasses.prefix =
+            this.autocompleteOptions.cssClasses.prefix || "ds";
+        const inputAriaLabel =
+            this.input &&
+            typeof this.input.attr === "function" &&
+            this.input.attr("aria-label");
+        this.autocompleteOptions.ariaLabel =
+            this.autocompleteOptions.ariaLabel || inputAriaLabel || "search input";
+
+        this.isSimpleLayout = layout === "simple";
+
+        this.client = new LunrSearchAdapter(searchDocs, searchIndex, baseUrl);
+
+        if (enhancedSearchInput) {
+            this.input = DocSearch.injectSearchBox(this.input);
+        }
+        this.autocomplete = autocomplete(this.input, autocompleteOptions, [
+            {
+                source: this.getAutocompleteSource(transformData, queryHook),
+                templates: {
+                    suggestion: DocSearch.getSuggestionTemplate(this.isSimpleLayout),
+                    footer: templates.footer,
+                    empty: DocSearch.getEmptyTemplate()
+                }
+            }
+        ]);
+
+        const customHandleSelected = handleSelected;
+        this.handleSelected = customHandleSelected || this.handleSelected;
+
+        // We prevent default link clicking if a custom handleSelected is defined
+        if (customHandleSelected) {
+            $(".algolia-autocomplete").on("click", ".ds-suggestions a", event => {
+                event.preventDefault();
+            });
+        }
+
+        this.autocomplete.on(
+            "autocomplete:selected",
+            this.handleSelected.bind(null, this.autocomplete.autocomplete)
+        );
+
+        this.autocomplete.on(
+            "autocomplete:shown",
+            this.handleShown.bind(null, this.input)
+        );
+
+        if (enhancedSearchInput) {
+            DocSearch.bindSearchBoxEvent();
+        }
+    }
+
+    static injectSearchBox(input) {
+        input.before(templates.searchBox);
+        const newInput = input
+            .prev()
+            .prev()
+            .find("input");
+        input.remove();
+        return newInput;
+    }
+
+    static bindSearchBoxEvent() {
+        $('.searchbox [type="reset"]').on("click", function () {
+            $("input#docsearch").focus();
+            $(this).addClass("hide");
+            autocomplete.autocomplete.setVal("");
+        });
+
+        $("input#docsearch").on("keyup", () => {
+            const searchbox = document.querySelector("input#docsearch");
+            const reset = document.querySelector('.searchbox [type="reset"]');
+            reset.className = "searchbox__reset";
+            if (searchbox.value.length === 0) {
+                reset.className += " hide";
+            }
+        });
+    }
+
+    /**
+     * Returns the matching input from a CSS selector, null if none matches
+     * @function getInputFromSelector
+     * @param  {string} selector CSS selector that matches the search
+     * input of the page
+     * @returns {void}
+     */
+    static getInputFromSelector(selector) {
+        const input = $(selector).filter("input");
+        return input.length ? $(input[0]) : null;
+    }
+
+    /**
+     * Returns the `source` method to be passed to autocomplete.js. It will query
+     * the Algolia index and call the callbacks with the formatted hits.
+     * @function getAutocompleteSource
+     * @param  {function} transformData An optional function to transform the hits
+     * @param {function} queryHook An optional function to transform the query
+     * @returns {function} Method to be passed as the `source` option of
+     * autocomplete
+     */
+    getAutocompleteSource(transformData, queryHook) {
+        return (query, callback) => {
+            if (queryHook) {
+                // eslint-disable-next-line no-param-reassign
+                query = queryHook(query) || query;
+            }
+            this.client.search(query).then(hits => {
+                if (
+                    this.queryDataCallback &&
+                    typeof this.queryDataCallback == "function"
+                ) {
+                    this.queryDataCallback(hits);
+                }
+                if (transformData) {
+                    hits = transformData(hits) || hits;
+                }
+                callback(DocSearch.formatHits(hits));
+            });
+        };
+    }
+
+    // Given a list of hits returned by the API, will reformat them to be used in
+    // a Hogan template
+    static formatHits(receivedHits) {
+        const clonedHits = utils.deepClone(receivedHits);
+        const hits = clonedHits.map(hit => {
+            if (hit._highlightResult) {
+                // eslint-disable-next-line no-param-reassign
+                hit._highlightResult = utils.mergeKeyWithParent(
+                    hit._highlightResult,
+                    "hierarchy"
+                );
+            }
+            return utils.mergeKeyWithParent(hit, "hierarchy");
+        });
+
+        // Group hits by category / subcategory
+        let groupedHits = utils.groupBy(hits, "lvl0");
+        $.each(groupedHits, (level, collection) => {
+            const groupedHitsByLvl1 = utils.groupBy(collection, "lvl1");
+            const flattenedHits = utils.flattenAndFlagFirst(
+                groupedHitsByLvl1,
+                "isSubCategoryHeader"
+            );
+            groupedHits[level] = flattenedHits;
+        });
+        groupedHits = utils.flattenAndFlagFirst(groupedHits, "isCategoryHeader");
+
+        // Translate hits into smaller objects to be send to the template
+        return groupedHits.map(hit => {
+            const url = DocSearch.formatURL(hit);
+            const category = utils.getHighlightedValue(hit, "lvl0");
+            const subcategory = utils.getHighlightedValue(hit, "lvl1") || category;
+            const displayTitle = utils
+                .compact([
+                    utils.getHighlightedValue(hit, "lvl2") || subcategory,
+                    utils.getHighlightedValue(hit, "lvl3"),
+                    utils.getHighlightedValue(hit, "lvl4"),
+                    utils.getHighlightedValue(hit, "lvl5"),
+                    utils.getHighlightedValue(hit, "lvl6")
+                ])
+                .join(
+                    '<span class="aa-suggestion-title-separator" aria-hidden="true"> › </span>'
+                );
+            const text = utils.getSnippetedValue(hit, "content");
+            const isTextOrSubcategoryNonEmpty =
+                (subcategory && subcategory !== "") ||
+                (displayTitle && displayTitle !== "");
+            const isLvl1EmptyOrDuplicate =
+                !subcategory || subcategory === "" || subcategory === category;
+            const isLvl2 =
+                displayTitle && displayTitle !== "" && displayTitle !== subcategory;
+            const isLvl1 =
+                !isLvl2 &&
+                (subcategory && subcategory !== "" && subcategory !== category);
+            const isLvl0 = !isLvl1 && !isLvl2;
+
+            return {
+                isLvl0,
+                isLvl1,
+                isLvl2,
+                isLvl1EmptyOrDuplicate,
+                isCategoryHeader: hit.isCategoryHeader,
+                isSubCategoryHeader: hit.isSubCategoryHeader,
+                isTextOrSubcategoryNonEmpty,
+                category,
+                subcategory,
+                title: displayTitle,
+                text,
+                url
+            };
+        });
+    }
+
+    static formatURL(hit) {
+        const { url, anchor } = hit;
+        if (url) {
+            const containsAnchor = url.indexOf("#") !== -1;
+            if (containsAnchor) return url;
+            else if (anchor) return `${hit.url}#${hit.anchor}`;
+            return url;
+        } else if (anchor) return `#${hit.anchor}`;
+        /* eslint-disable */
+        console.warn("no anchor nor url for : ", JSON.stringify(hit));
+        /* eslint-enable */
+        return null;
+    }
+
+    static getEmptyTemplate() {
+        return args => Hogan.compile(templates.empty).render(args);
+    }
+
+    static getSuggestionTemplate(isSimpleLayout) {
+        const stringTemplate = isSimpleLayout
+            ? templates.suggestionSimple
+            : templates.suggestion;
+        const template = Hogan.compile(stringTemplate);
+        return suggestion => template.render(suggestion);
+    }
+
+    handleSelected(input, event, suggestion, datasetNumber, context = {}) {
+        // Do nothing if click on the suggestion, as it's already a <a href>, the
+        // browser will take care of it. This allow Ctrl-Clicking on results and not
+        // having the main window being redirected as well
+        if (context.selectionMethod === "click") {
+            return;
+        }
+
+        input.setVal("");
+        window.location.assign(suggestion.url);
+    }
+
+    handleShown(input) {
+        const middleOfInput = input.offset().left + input.width() / 2;
+        let middleOfWindow = $(document).width() / 2;
+
+        if (isNaN(middleOfWindow)) {
+            middleOfWindow = 900;
+        }
+
+        const alignClass =
+            middleOfInput - middleOfWindow >= 0
+                ? "algolia-autocomplete-right"
+                : "algolia-autocomplete-left";
+        const otherAlignClass =
+            middleOfInput - middleOfWindow < 0
+                ? "algolia-autocomplete-right"
+                : "algolia-autocomplete-left";
+        const autocompleteWrapper = $(".algolia-autocomplete");
+        if (!autocompleteWrapper.hasClass(alignClass)) {
+            autocompleteWrapper.addClass(alignClass);
+        }
+
+        if (autocompleteWrapper.hasClass(otherAlignClass)) {
+            autocompleteWrapper.removeClass(otherAlignClass);
+        }
+    }
+}
+
+export default DocSearch;

docs/src/theme/SearchBar/index.js

@@ -0,0 +1,114 @@
+import React, { useRef, useCallback, useState } from "react";
+import classnames from "classnames";
+import { useHistory } from "@docusaurus/router";
+import useDocusaurusContext from "@docusaurus/useDocusaurusContext";
+import { usePluginData } from '@docusaurus/useGlobalData';
+import useIsBrowser from "@docusaurus/useIsBrowser";
+const Search = props => {
+  const initialized = useRef(false);
+  const searchBarRef = useRef(null);
+  const [indexReady, setIndexReady] = useState(false);
+  const history = useHistory();
+  const { siteConfig = {} } = useDocusaurusContext();
+  const isBrowser = useIsBrowser();
+  const { baseUrl } = siteConfig;
+  const initAlgolia = (searchDocs, searchIndex, DocSearch) => {
+      new DocSearch({
+        searchDocs,
+        searchIndex,
+        baseUrl,
+        inputSelector: "#search_input_react",
+        // Override algolia's default selection event, allowing us to do client-side
+        // navigation and avoiding a full page refresh.
+        handleSelected: (_input, _event, suggestion) => {
+          const url = suggestion.url || "/";
+          // Use an anchor tag to parse the absolute url into a relative url
+          // Alternatively, we can use new URL(suggestion.url) but its not supported in IE
+          const a = document.createElement("a");
+          a.href = url;
+          // Algolia use closest parent element id #__docusaurus when a h1 page title does not have an id
+          // So, we can safely remove it. See https://github.com/facebook/docusaurus/issues/1828 for more details.
+
+          history.push(url);
+        }
+      });
+  };
+
+  const pluginData = usePluginData('docusaurus-lunr-search');
+  const getSearchDoc = () =>
+    process.env.NODE_ENV === "production"
+      ? fetch(`${baseUrl}${pluginData.fileNames.searchDoc}`).then((content) => content.json())
+      : Promise.resolve([]);
+
+  const getLunrIndex = () =>
+    process.env.NODE_ENV === "production"
+      ? fetch(`${baseUrl}${pluginData.fileNames.lunrIndex}`).then((content) => content.json())
+      : Promise.resolve([]);
+
+  const loadAlgolia = () => {
+    if (!initialized.current) {
+      Promise.all([
+        getSearchDoc(),
+        getLunrIndex(),
+        import("./DocSearch"),
+        import("./algolia.css")
+      ]).then(([searchDocs, searchIndex, { default: DocSearch }]) => {
+        if (searchDocs.length === 0) {
+          return;
+        }
+        initAlgolia(searchDocs, searchIndex, DocSearch);
+        setIndexReady(true);
+      });
+      initialized.current = true;
+    }
+  };
+
+  const toggleSearchIconClick = useCallback(
+    e => {
+      if (!searchBarRef.current.contains(e.target)) {
+        searchBarRef.current.focus();
+      }
+
+      props.handleSearchBarToggle && props.handleSearchBarToggle(!props.isSearchBarExpanded);
+    },
+    [props.isSearchBarExpanded]
+  );
+
+  if (isBrowser) {
+    loadAlgolia();
+  }
+
+  return (
+    <div className="navbar__search" key="search-box">
+      <span
+        aria-label="expand searchbar"
+        role="button"
+        className={classnames("search-icon", {
+          "search-icon-hidden": props.isSearchBarExpanded
+        })}
+        onClick={toggleSearchIconClick}
+        onKeyDown={toggleSearchIconClick}
+        tabIndex={0}
+      />
+      <input
+        id="search_input_react"
+        type="search"
+        placeholder={indexReady ? 'Search' : 'Loading...'}
+        aria-label="Search"
+        className={classnames(
+          "navbar__search-input",
+          { "search-bar-expanded": props.isSearchBarExpanded },
+          { "search-bar": !props.isSearchBarExpanded }
+        )}
+        onClick={loadAlgolia}
+        onMouseOver={loadAlgolia}
+        onFocus={toggleSearchIconClick}
+        onBlur={toggleSearchIconClick}
+        ref={searchBarRef}
+        disabled={!indexReady}
+      />
+    </div>
+  );
+};
+
+export default Search;

docs/src/theme/SearchBar/lunar-search.js

@@ -0,0 +1,147 @@
+import lunr from "@generated/lunr.client";
+lunr.tokenizer.separator = /[\s\-/]+/;
+
+class LunrSearchAdapter {
+    constructor(searchDocs, searchIndex, baseUrl = '/') {
+        this.searchDocs = searchDocs;
+        this.lunrIndex = lunr.Index.load(searchIndex);
+        this.baseUrl = baseUrl;
+    }
+
+    getLunrResult(input) {
+        return this.lunrIndex.query(function (query) {
+            const tokens = lunr.tokenizer(input);
+            query.term(tokens, {
+                boost: 10
+            });
+            query.term(tokens, {
+                wildcard: lunr.Query.wildcard.TRAILING
+            });
+        });
+    }
+
+    getHit(doc, formattedTitle, formattedContent) {
+        return {
+            hierarchy: {
+                lvl0: doc.pageTitle || doc.title,
+                lvl1: doc.type === 0 ? null : doc.title
+            },
+            url: doc.url,
+            _snippetResult: formattedContent ? {
+                content: {
+                    value: formattedContent,
+                    matchLevel: "full"
+                }
+            } : null,
+            _highlightResult: {
+                hierarchy: {
+                    lvl0: {
+                        value: doc.type === 0 ? formattedTitle || doc.title : doc.pageTitle,
+                    },
+                    lvl1:
+                        doc.type === 0
+                            ? null
+                            : {
+                                value: formattedTitle || doc.title
+                            }
+                }
+            }
+        };
+    }
+    getTitleHit(doc, position, length) {
+        const start = position[0];
+        const end = position[0] + length;
+        let formattedTitle = doc.title.substring(0, start) + '<span class="algolia-docsearch-suggestion--highlight">' + doc.title.substring(start, end) + '</span>' + doc.title.substring(end, doc.title.length);
+        return this.getHit(doc, formattedTitle)
+    }
+
+    getKeywordHit(doc, position, length) {
+        const start = position[0];
+        const end = position[0] + length;
+        let formattedTitle = doc.title + '<br /><i>Keywords: ' + doc.keywords.substring(0, start) + '<span class="algolia-docsearch-suggestion--highlight">' + doc.keywords.substring(start, end) + '</span>' + doc.keywords.substring(end, doc.keywords.length) + '</i>'
+        return this.getHit(doc, formattedTitle)
+    }
+
+    getContentHit(doc, position) {
+        const start = position[0];
+        const end = position[0] + position[1];
+        let previewStart = start;
+        let previewEnd = end;
+        let ellipsesBefore = true;
+        let ellipsesAfter = true;
+        for (let k = 0; k < 3; k++) {
+            const nextSpace = doc.content.lastIndexOf(' ', previewStart - 2);
+            const nextDot = doc.content.lastIndexOf('.', previewStart - 2);
+            if ((nextDot > 0) && (nextDot > nextSpace)) {
+                previewStart = nextDot + 1;
+                ellipsesBefore = false;
+                break;
+            }
+            if (nextSpace < 0) {
+                previewStart = 0;
+                ellipsesBefore = false;
+                break;
+            }
+            previewStart = nextSpace + 1;
+        }
+        for (let k = 0; k < 10; k++) {
+            const nextSpace = doc.content.indexOf(' ', previewEnd + 1);
+            const nextDot = doc.content.indexOf('.', previewEnd + 1);
+            if ((nextDot > 0) && (nextDot < nextSpace)) {
+                previewEnd = nextDot;
+                ellipsesAfter = false;
+                break;
+            }
+            if (nextSpace < 0) {
+                previewEnd = doc.content.length;
+                ellipsesAfter = false;
+                break;
+            }
+            previewEnd = nextSpace;
+        }
+        let preview = doc.content.substring(previewStart, start);
+        if (ellipsesBefore) {
+            preview = '... ' + preview;
+        }
+        preview += '<span class="algolia-docsearch-suggestion--highlight">' + doc.content.substring(start, end) + '</span>';
+        preview += doc.content.substring(end, previewEnd);
+        if (ellipsesAfter) {
+            preview += ' ...';
+        }
+        return this.getHit(doc, null, preview);
+
+    }
+    search(input) {
+        return new Promise((resolve, rej) => {
+            const results = this.getLunrResult(input);
+            const hits = [];
+            results.length > 5 && (results.length = 5);
+            this.titleHitsRes = []
+            this.contentHitsRes = []
+            results.forEach(result => {
+                const doc = this.searchDocs[result.ref];
+                const { metadata } = result.matchData;
+                for (let i in metadata) {
+                    if (metadata[i].title) {
+                        if (!this.titleHitsRes.includes(result.ref)) {
+                            const position = metadata[i].title.position[0]
+                            hits.push(this.getTitleHit(doc, position, input.length));
+                            this.titleHitsRes.push(result.ref);
+                        }
+                    } else if (metadata[i].content) {
+                        const position = metadata[i].content.position[0]
+                        hits.push(this.getContentHit(doc, position))
+                    } else if (metadata[i].keywords) {
+                        const position = metadata[i].keywords.position[0]
+                        hits.push(this.getKeywordHit(doc, position, input.length));
+                        this.titleHitsRes.push(result.ref);
+                    }
+                }
+            });
+            hits.length > 5 && (hits.length = 5);
+            resolve(hits);
+        });
+    }
+}
+
+export default LunrSearchAdapter;

docs/src/theme/SearchBar/styles.css

@@ -0,0 +1,33 @@
+.search-icon {
+  background-image: var(--ifm-navbar-search-input-icon);
+  height: auto;
+  width: 24px;
+  cursor: pointer;
+  padding: 8px;
+  line-height: 32px;
+  background-repeat: no-repeat;
+  background-position: center;
+  display: none;
+}
+
+.search-icon-hidden {
+  visibility: hidden;
+}
+
+@media (max-width: 360px) {
+  .search-bar {
+    width: 0 !important;
+    background: none !important;
+    padding: 0 !important;
+    transition: none !important;
+  }
+
+  .search-bar-expanded {
+    width: 9rem !important;
+  }
+
+  .search-icon {
+    display: inline;
+    vertical-align: sub;
+  }
+}

docs/src/theme/SearchBar/templates.js

@@ -0,0 +1,112 @@
+const prefix = 'algolia-docsearch';
+const suggestionPrefix = `${prefix}-suggestion`;
+const footerPrefix = `${prefix}-footer`;
+
+const templates = {
+  suggestion: `
+  <a class="${suggestionPrefix}
+    {{#isCategoryHeader}}${suggestionPrefix}__main{{/isCategoryHeader}}
+    {{#isSubCategoryHeader}}${suggestionPrefix}__secondary{{/isSubCategoryHeader}}
+    "
+    aria-label="Link to the result"
+    href="{{{url}}}"
+    >
+    <div class="${suggestionPrefix}--category-header">
+        <span class="${suggestionPrefix}--category-header-lvl0">{{{category}}}</span>
+    </div>
+    <div class="${suggestionPrefix}--wrapper">
+      <div class="${suggestionPrefix}--subcategory-column">
+        <span class="${suggestionPrefix}--subcategory-column-text">{{{subcategory}}}</span>
+      </div>
+      {{#isTextOrSubcategoryNonEmpty}}
+      <div class="${suggestionPrefix}--content">
+        <div class="${suggestionPrefix}--subcategory-inline">{{{subcategory}}}</div>
+        <div class="${suggestionPrefix}--title">{{{title}}}</div>
+        {{#text}}<div class="${suggestionPrefix}--text">{{{text}}}</div>{{/text}}
+      </div>
+      {{/isTextOrSubcategoryNonEmpty}}
+    </div>
+  </a>
+  `,
+  suggestionSimple: `
+  <div class="${suggestionPrefix}
+    {{#isCategoryHeader}}${suggestionPrefix}__main{{/isCategoryHeader}}
+    {{#isSubCategoryHeader}}${suggestionPrefix}__secondary{{/isSubCategoryHeader}}
+    suggestion-layout-simple
+  ">
+    <div class="${suggestionPrefix}--category-header">
+        {{^isLvl0}}
+        <span class="${suggestionPrefix}--category-header-lvl0 ${suggestionPrefix}--category-header-item">{{{category}}}</span>
+          {{^isLvl1}}
+          {{^isLvl1EmptyOrDuplicate}}
+          <span class="${suggestionPrefix}--category-header-lvl1 ${suggestionPrefix}--category-header-item">
+              {{{subcategory}}}
+          </span>
+          {{/isLvl1EmptyOrDuplicate}}
+          {{/isLvl1}}
+        {{/isLvl0}}
+        <div class="${suggestionPrefix}--title ${suggestionPrefix}--category-header-item">
+            {{#isLvl2}}
+                {{{title}}}
+            {{/isLvl2}}
+            {{#isLvl1}}
+                {{{subcategory}}}
+            {{/isLvl1}}
+            {{#isLvl0}}
+                {{{category}}}
+            {{/isLvl0}}
+        </div>
+    </div>
+    <div class="${suggestionPrefix}--wrapper">
+      {{#text}}
+      <div class="${suggestionPrefix}--content">
+        <div class="${suggestionPrefix}--text">{{{text}}}</div>
+      </div>
+      {{/text}}
+    </div>
+  </div>
+  `,
+  footer: `
+    <div class="${footerPrefix}">
+    </div>
+  `,
+  empty: `
+  <div class="${suggestionPrefix}">
+    <div class="${suggestionPrefix}--wrapper">
+        <div class="${suggestionPrefix}--content ${suggestionPrefix}--no-results">
+            <div class="${suggestionPrefix}--title">
+                <div class="${suggestionPrefix}--text">
+                    No results found for query <b>"{{query}}"</b>
+                </div>
+            </div>
+        </div>
+    </div>
+  </div>
+  `,
+  searchBox: `
+  <form novalidate="novalidate" onsubmit="return false;" class="searchbox">
+    <div role="search" class="searchbox__wrapper">
+      <input id="docsearch" type="search" name="search" placeholder="Search the docs" autocomplete="off" required="required" class="searchbox__input"/>
+      <button type="submit" title="Submit your search query." class="searchbox__submit" >
+        <svg width=12 height=12 role="img" aria-label="Search">
+          <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#sbx-icon-search-13"></use>
+        </svg>
+      </button>
+      <button type="reset" title="Clear the search query." class="searchbox__reset hide">
+        <svg width=12 height=12 role="img" aria-label="Reset">
+          <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#sbx-icon-clear-3"></use>
+        </svg>
+      </button>
+    </div>
+</form>
+
+<div class="svg-icons" style="height: 0; width: 0; position: absolute; visibility: hidden">
+  <svg xmlns="http://www.w3.org/2000/svg">
+    <symbol id="sbx-icon-clear-3" viewBox="0 0 40 40"><path d="M16.228 20L1.886 5.657 0 3.772 3.772 0l1.885 1.886L20 16.228 34.343 1.886 36.228 0 40 3.772l-1.886 1.885L23.772 20l14.342 14.343L40 36.228 36.228 40l-1.885-1.886L20 23.772 5.657 38.114 3.772 40 0 36.228l1.886-1.885L16.228 20z" fill-rule="evenodd"></symbol>
+    <symbol id="sbx-icon-search-13" viewBox="0 0 40 40"><path d="M26.806 29.012a16.312 16.312 0 0 1-10.427 3.746C7.332 32.758 0 25.425 0 16.378 0 7.334 7.333 0 16.38 0c9.045 0 16.378 7.333 16.378 16.38 0 3.96-1.406 7.593-3.746 10.426L39.547 37.34c.607.608.61 1.59-.004 2.203a1.56 1.56 0 0 1-2.202.004L26.807 29.012zm-10.427.627c7.322 0 13.26-5.938 13.26-13.26 0-7.324-5.938-13.26-13.26-13.26-7.324 0-13.26 5.936-13.26 13.26 0 7.322 5.936 13.26 13.26 13.26z" fill-rule="evenodd"></symbol>
+  </svg>
+</div>
+  `,
+};
+
+export default templates;

docs/src/theme/SearchBar/utils.js

@@ -0,0 +1,270 @@
+import $ from "autocomplete.js/zepto";
+
+const utils = {
+  /*
+  * Move the content of an object key one level higher.
+  * eg.
+  * {
+  *   name: 'My name',
+  *   hierarchy: {
+  *     lvl0: 'Foo',
+  *     lvl1: 'Bar'
+  *   }
+  * }
+  * Will be converted to
+  * {
+  *   name: 'My name',
+  *   lvl0: 'Foo',
+  *   lvl1: 'Bar'
+  * }
+  * @param {Object} object Main object
+  * @param {String} property Main object key to move up
+  * @return {Object}
+  * @throws Error when key is not an attribute of Object or is not an object itself
+  */
+  mergeKeyWithParent(object, property) {
+    if (object[property] === undefined) {
+      return object;
+    }
+    if (typeof object[property] !== 'object') {
+      return object;
+    }
+    const newObject = $.extend({}, object, object[property]);
+    delete newObject[property];
+    return newObject;
+  },
+  /*
+  * Group all objects of a collection by the value of the specified attribute
+  * If the attribute is a string, use the lowercase form.
+  *
+  * eg.
+  * groupBy([
+  *   {name: 'Tim', category: 'dev'},
+  *   {name: 'Vincent', category: 'dev'},
+  *   {name: 'Ben', category: 'sales'},
+  *   {name: 'Jeremy', category: 'sales'},
+  *   {name: 'AlexS', category: 'dev'},
+  *   {name: 'AlexK', category: 'sales'}
+  * ], 'category');
+  * =>
+  * {
+  *   'devs': [
+  *     {name: 'Tim', category: 'dev'},
+  *     {name: 'Vincent', category: 'dev'},
+  *     {name: 'AlexS', category: 'dev'}
+  *   ],
+  *   'sales': [
+  *     {name: 'Ben', category: 'sales'},
+  *     {name: 'Jeremy', category: 'sales'},
+  *     {name: 'AlexK', category: 'sales'}
+  *   ]
+  * }
+  * @param {array} collection Array of objects to group
+  * @param {String} property The attribute on which apply the grouping
+  * @return {array}
+  * @throws Error when one of the element does not have the specified property
+  */
+  groupBy(collection, property) {
+    const newCollection = {};
+    $.each(collection, (index, item) => {
+      if (item[property] === undefined) {
+        throw new Error(`[groupBy]: Object has no key ${property}`);
+      }
+      let key = item[property];
+      if (typeof key === 'string') {
+        key = key.toLowerCase();
+      }
+      // fix #171 the given data type of docsearch hits might be conflict with the properties of the native Object,
+      // such as the constructor, so we need to do this check.
+      if (!Object.prototype.hasOwnProperty.call(newCollection, key)) {
+        newCollection[key] = [];
+      }
+      newCollection[key].push(item);
+    });
+    return newCollection;
+  },
+  /*
+  * Return an array of all the values of the specified object
+  * eg.
+  * values({
+  *   foo: 42,
+  *   bar: true,
+  *   baz: 'yep'
+  * })
+  * =>
+  * [42, true, yep]
+  * @param {object} object Object to extract values from
+  * @return {array}
+  */
+  values(object) {
+    return Object.keys(object).map(key => object[key]);
+  },
+  /*
+  * Flattens an array
+  * eg.
+  * flatten([1, 2, [3, 4], [5, 6]])
+  * =>
+  * [1, 2, 3, 4, 5, 6]
+  * @param {array} array Array to flatten
+  * @return {array}
+  */
+  flatten(array) {
+    const results = [];
+    array.forEach(value => {
+      if (!Array.isArray(value)) {
+        results.push(value);
+        return;
+      }
+      value.forEach(subvalue => {
+        results.push(subvalue);
+      });
+    });
+    return results;
+  },
+  /*
+  * Flatten all values of an object into an array, marking each first element of
+  * each group with a specific flag
+  * eg.
+  * flattenAndFlagFirst({
+  *   'devs': [
+  *     {name: 'Tim', category: 'dev'},
+  *     {name: 'Vincent', category: 'dev'},
+  *     {name: 'AlexS', category: 'dev'}
+  *   ],
+  *   'sales': [
+  *     {name: 'Ben', category: 'sales'},
+  *     {name: 'Jeremy', category: 'sales'},
+  *     {name: 'AlexK', category: 'sales'}
+  *   ]
+  * , 'isTop');
+  * =>
+  * [
+  *     {name: 'Tim', category: 'dev', isTop: true},
+  *     {name: 'Vincent', category: 'dev', isTop: false},
+  *     {name: 'AlexS', category: 'dev', isTop: false},
+  *     {name: 'Ben', category: 'sales', isTop: true},
+  *     {name: 'Jeremy', category: 'sales', isTop: false},
+  *     {name: 'AlexK', category: 'sales', isTop: false}
+  * ]
+  * @param {object} object Object to flatten
+  * @param {string} flag Flag to set to true on first element of each group
+  * @return {array}
+  */
+  flattenAndFlagFirst(object, flag) {
+    const values = this.values(object).map(collection =>
+      collection.map((item, index) => {
+        // eslint-disable-next-line no-param-reassign
+        item[flag] = index === 0;
+        return item;
+      })
+    );
+    return this.flatten(values);
+  },
+  /*
+  * Removes all empty strings, null, false and undefined elements array
+  * eg.
+  * compact([42, false, null, undefined, '', [], 'foo']);
+  * =>
+  * [42, [], 'foo']
+  * @param {array} array Array to compact
+  * @return {array}
+  */
+  compact(array) {
+    const results = [];
+    array.forEach(value => {
+      if (!value) {
+        return;
+      }
+      results.push(value);
+    });
+    return results;
+  },
+  /*
+   * Returns the highlighted value of the specified key in the specified object.
+   * If no highlighted value is available, will return the key value directly
+   * eg.
+   * getHighlightedValue({
+   *    _highlightResult: {
+   *      text: {
+   *        value: '<mark>foo</mark>'
+   *      }
+   *    },
+   *    text: 'foo'
+   * }, 'text');
+   * =>
+   * '<mark>foo</mark>'
+   * @param {object} object Hit object returned by the Algolia API
+   * @param {string} property Object key to look for
+   * @return {string}
+   **/
+  getHighlightedValue(object, property) {
+    if (
+      object._highlightResult &&
+      object._highlightResult.hierarchy_camel &&
+      object._highlightResult.hierarchy_camel[property] &&
+      object._highlightResult.hierarchy_camel[property].matchLevel &&
+      object._highlightResult.hierarchy_camel[property].matchLevel !== 'none' &&
+      object._highlightResult.hierarchy_camel[property].value
+    ) {
+      return object._highlightResult.hierarchy_camel[property].value;
+    }
+    if (
+      object._highlightResult &&
+      object._highlightResult &&
+      object._highlightResult[property] &&
+      object._highlightResult[property].value
+    ) {
+      return object._highlightResult[property].value;
+    }
+    return object[property];
+  },
+  /*
+   * Returns the snippeted value of the specified key in the specified object.
+   * If no highlighted value is available, will return the key value directly.
+   * Will add starting and ending ellipsis (…) if we detect that a sentence is
+   * incomplete
+   * eg.
+   * getSnippetedValue({
+   *    _snippetResult: {
+   *      text: {
+   *        value: '<mark>This is an unfinished sentence</mark>'
+   *      }
+   *    },
+   *    text: 'This is an unfinished sentence'
+   * }, 'text');
+   * =>
+   * '<mark>This is an unfinished sentence</mark>…'
+   * @param {object} object Hit object returned by the Algolia API
+   * @param {string} property Object key to look for
+   * @return {string}
+   **/
+  getSnippetedValue(object, property) {
+    if (
+      !object._snippetResult ||
+      !object._snippetResult[property] ||
+      !object._snippetResult[property].value
+    ) {
+      return object[property];
+    }
+    let snippet = object._snippetResult[property].value;
+
+    if (snippet[0] !== snippet[0].toUpperCase()) {
+      snippet = `…${snippet}`;
+    }
+    if (['.', '!', '?'].indexOf(snippet[snippet.length - 1]) === -1) {
+      snippet = `${snippet}…`;
+    }
+    return snippet;
+  },
+  /*
+  * Deep clone an object.
+  * Note: This will not clone functions and dates
+  * @param {object} object Object to clone
+  * @return {object}
+  */
+  deepClone(object) {
+    return JSON.parse(JSON.stringify(object));
+  },
+};
+
+export default utils;