Remove vanilla code

scripts/fuzzy.js

@@ -1,144 +0,0 @@
-(() => {
-    let searchField = document.querySelector("#search");
-    if (searchField === null)
-        return;
-
-    let client = new XMLHttpRequest();
-    client.open("GET", "/pages.json");
-    client.onreadystatechange = () => {
-        if (client.readyState === 4)
-            fuzzyInit(client.responseText);
-    }
-    client.send();
-    searchField.focus();
-})();
-
-function fuzzyInit(pagesFileName) {
-    if (pagesFileName == "")
-        return;
-    
-    let searchField = document.querySelector("#search");
-    let resultBlock = document.querySelector("#results");
-    if (searchField === null || resultBlock === null)
-        return;
-
-    var pages;
-    try {
-        pages = JSON.parse(pagesFileName);
-    } catch (e) {
-        console.error(e);
-        document.body.innerHTML = e.message;
-        return;
-    }
-
-    pages.sort((x, y) => {return ('' + x.title).localeCompare(y.title)});
-
-    searchField.addEventListener("keyup", (e) => {
-
-        let searchValue = searchField.value ? searchField.value.toLowerCase() : "";
-
-        if (e.code === "Enter") {
-            if (resultBlock.childNodes === null 
-                || resultBlock.childNodes[0] === null
-                || resultBlock.childNodes[0].href === undefined)
-                return;
-
-            window.location = resultBlock.childNodes[0].href;
-            return;
-        }
-
-        // help
-        if (searchValue === "?" || searchValue === "help") {
-            resultBlock.innerHTML = "<h2>Help</h2>Enter a page or directory name.<br>If do not know any, clear the search field to list everything.<br> Using the <code>Enter</code> key would take you to the first page in list, if the list is not empty.<br>Alternatively, use the <code>Up</code> and <code>Down</code> arrow keys to select the page you want and use the <code>Enter</code> key.<br>Use <code>Backspace</code> to go back to the search."
-            return;
-        }
-
-        let results = [];
-        for (const [i, page] of pages.entries()) {
-            ret = fuzzySearch(page.title, searchValue);
-            if (ret === null)
-                continue;
-            results.push({formatted: ret.formatted, link: page.link, score: ret.score});
-        }
-
-        results.sort((x, y) => {return x.score - y.score});
-
-        resultBlock.innerHTML = "";
-        for (const res of results) {
-            linkBlock = document.createElement("a");
-            linkBlock.classList.add("hyperlink");
-            linkBlock.href = res.link;
-            linkBlock.innerHTML = `<div class="name">${res.formatted}</div><div class="link">${res.link}</div>`;
-            resultBlock.appendChild(linkBlock);
-        }
-
-        if (results.length <= 0)
-            resultBlock.innerHTML = "Unknown command or no matching pages found."
-    });
-
-    document.body.addEventListener("keydown", (e) => {
-        if (e.code === "Backspace") {
-            searchField.focus();
-        }
-
-        if (e.code === "ArrowDown" || e.code === "ArrowUp") {
-            if (resultBlock.childNodes === null)
-                return;
-
-            resultNodes = resultBlock.childNodes;
-            
-            if (resultNodes.length <= 1)
-                return;
-
-            let currNode = document.activeElement;
-            
-            if (searchField === currNode) {
-                e.preventDefault();    
-                if (e.code === "ArrowDown")
-                    resultNodes[0].focus();
-                else
-                    resultNodes[resultNodes.length - 1].focus();
-                return;
-            }
-
-            if (Array.from(resultNodes).indexOf(currNode) < 0)
-                return;
-
-            e.preventDefault();
-            if (e.code === "ArrowDown")
-                if (currNode.nextElementSibling === null)
-                    searchField.focus();
-                else
-                    currNode.nextElementSibling.focus();
-            else if (e.code === "ArrowUp")
-                if (currNode.previousElementSibling === null)
-                    searchField.focus();
-                else
-                    currNode.previousElementSibling.focus();
-            return;
-        }
-    });
-}
-
-function fuzzySearch(findIn, find) {
-    let search = find.replace(/\s/g, "");
-    search = search.toLowerCase();
-    let tokens = findIn.split('');
-    let pc = 0;
-    let score = 0;
-
-    for (const [i, ch] of tokens.entries()) {
-        if (ch.toLowerCase() === search[pc]) {
-            score += i - pc;
-            tokens[i] = `<span class="highlight">${ch}</span>`;
-            pc++;
-            if (search.length < pc)
-                return null;
-        }
-    }
-
-    if (search.length === pc)
-        return {formatted: tokens.join(''), score: (score / search.length)};
-    
-    return null;
-}