Refactor routing in App component to enhance navigation and improve error handling by integrating dynamic routes and updating the NotFound route.

node_modules/micromark-extension-gfm-footnote/lib/html.js

@@ -0,0 +1,154 @@
+/**
+ * @import {HtmlOptions as Options} from 'micromark-extension-gfm-footnote'
+ * @import {HtmlExtension} from 'micromark-util-types'
+ */
+
+import { normalizeIdentifier } from 'micromark-util-normalize-identifier';
+import { sanitizeUri } from 'micromark-util-sanitize-uri';
+const own = {}.hasOwnProperty;
+
+/** @type {Options} */
+const emptyOptions = {};
+
+/**
+ * Generate the default label that GitHub uses on backreferences.
+ *
+ * @param {number} referenceIndex
+ *   Index of the definition in the order that they are first referenced,
+ *   0-indexed.
+ * @param {number} rereferenceIndex
+ *   Index of calls to the same definition, 0-indexed.
+ * @returns {string}
+ *   Default label.
+ */
+export function defaultBackLabel(referenceIndex, rereferenceIndex) {
+  return 'Back to reference ' + (referenceIndex + 1) + (rereferenceIndex > 1 ? '-' + rereferenceIndex : '');
+}
+
+/**
+ * Create an extension for `micromark` to support GFM footnotes when
+ * serializing to HTML.
+ *
+ * @param {Options | null | undefined} [options={}]
+ *   Configuration (optional).
+ * @returns {HtmlExtension}
+ *   Extension for `micromark` that can be passed in `htmlExtensions` to
+ *   support GFM footnotes when serializing to HTML.
+ */
+export function gfmFootnoteHtml(options) {
+  const config = options || emptyOptions;
+  const label = config.label || 'Footnotes';
+  const labelTagName = config.labelTagName || 'h2';
+  const labelAttributes = config.labelAttributes === null || config.labelAttributes === undefined ? 'class="sr-only"' : config.labelAttributes;
+  const backLabel = config.backLabel || defaultBackLabel;
+  const clobberPrefix = config.clobberPrefix === null || config.clobberPrefix === undefined ? 'user-content-' : config.clobberPrefix;
+  return {
+    enter: {
+      gfmFootnoteDefinition() {
+        const stack = this.getData('tightStack');
+        stack.push(false);
+      },
+      gfmFootnoteDefinitionLabelString() {
+        this.buffer();
+      },
+      gfmFootnoteCallString() {
+        this.buffer();
+      }
+    },
+    exit: {
+      gfmFootnoteDefinition() {
+        let definitions = this.getData('gfmFootnoteDefinitions');
+        const footnoteStack = this.getData('gfmFootnoteDefinitionStack');
+        const tightStack = this.getData('tightStack');
+        const current = footnoteStack.pop();
+        const value = this.resume();
+        if (!definitions) {
+          this.setData('gfmFootnoteDefinitions', definitions = {});
+        }
+        if (!own.call(definitions, current)) definitions[current] = value;
+        tightStack.pop();
+        this.setData('slurpOneLineEnding', true);
+        // “Hack” to prevent a line ending from showing up if we’re in a definition in
+        // an empty list item.
+        this.setData('lastWasTag');
+      },
+      gfmFootnoteDefinitionLabelString(token) {
+        let footnoteStack = this.getData('gfmFootnoteDefinitionStack');
+        if (!footnoteStack) {
+          this.setData('gfmFootnoteDefinitionStack', footnoteStack = []);
+        }
+        footnoteStack.push(normalizeIdentifier(this.sliceSerialize(token)));
+        this.resume(); // Drop the label.
+        this.buffer(); // Get ready for a value.
+      },
+      gfmFootnoteCallString(token) {
+        let calls = this.getData('gfmFootnoteCallOrder');
+        let counts = this.getData('gfmFootnoteCallCounts');
+        const id = normalizeIdentifier(this.sliceSerialize(token));
+        /** @type {number} */
+        let counter;
+        this.resume();
+        if (!calls) this.setData('gfmFootnoteCallOrder', calls = []);
+        if (!counts) this.setData('gfmFootnoteCallCounts', counts = {});
+        const index = calls.indexOf(id);
+        const safeId = sanitizeUri(id.toLowerCase());
+        if (index === -1) {
+          calls.push(id);
+          counts[id] = 1;
+          counter = calls.length;
+        } else {
+          counts[id]++;
+          counter = index + 1;
+        }
+        const reuseCounter = counts[id];
+        this.tag('<sup><a href="#' + clobberPrefix + 'fn-' + safeId + '" id="' + clobberPrefix + 'fnref-' + safeId + (reuseCounter > 1 ? '-' + reuseCounter : '') + '" data-footnote-ref="" aria-describedby="footnote-label">' + String(counter) + '</a></sup>');
+      },
+      null() {
+        const calls = this.getData('gfmFootnoteCallOrder') || [];
+        const counts = this.getData('gfmFootnoteCallCounts') || {};
+        const definitions = this.getData('gfmFootnoteDefinitions') || {};
+        let index = -1;
+        if (calls.length > 0) {
+          this.lineEndingIfNeeded();
+          this.tag('<section data-footnotes="" class="footnotes"><' + labelTagName + ' id="footnote-label"' + (labelAttributes ? ' ' + labelAttributes : '') + '>');
+          this.raw(this.encode(label));
+          this.tag('</' + labelTagName + '>');
+          this.lineEndingIfNeeded();
+          this.tag('<ol>');
+        }
+        while (++index < calls.length) {
+          // Called definitions are always defined.
+          const id = calls[index];
+          const safeId = sanitizeUri(id.toLowerCase());
+          let referenceIndex = 0;
+          /** @type {Array<string>} */
+          const references = [];
+          while (++referenceIndex <= counts[id]) {
+            references.push('<a href="#' + clobberPrefix + 'fnref-' + safeId + (referenceIndex > 1 ? '-' + referenceIndex : '') + '" data-footnote-backref="" aria-label="' + this.encode(typeof backLabel === 'string' ? backLabel : backLabel(index, referenceIndex)) + '" class="data-footnote-backref">↩' + (referenceIndex > 1 ? '<sup>' + referenceIndex + '</sup>' : '') + '</a>');
+          }
+          const reference = references.join(' ');
+          let injected = false;
+          this.lineEndingIfNeeded();
+          this.tag('<li id="' + clobberPrefix + 'fn-' + safeId + '">');
+          this.lineEndingIfNeeded();
+          this.tag(definitions[id].replace(/<\/p>(?:\r?\n|\r)?$/, function ($0) {
+            injected = true;
+            return ' ' + reference + $0;
+          }));
+          if (!injected) {
+            this.lineEndingIfNeeded();
+            this.tag(reference);
+          }
+          this.lineEndingIfNeeded();
+          this.tag('</li>');
+        }
+        if (calls.length > 0) {
+          this.lineEndingIfNeeded();
+          this.tag('</ol>');
+          this.lineEndingIfNeeded();
+          this.tag('</section>');
+        }
+      }
+    }
+  };
+}