Finished

Test Name	Status
parses normal text as a paragraph	Pass
parsing italics	Pass
parsing bold text	Pass
mixed normal, italics and bold text	Pass
with h1 header level	Pass
with h2 header level	Pass
with h3 header level	Pass
with h4 header level	Pass
with h5 header level	Pass
with h6 header level	Pass
with h7 header level	Pass
unordered lists	Pass
with a little bit of everything	Pass
with markdown symbols in the header text that should not be interpreted	Pass
with markdown symbols in the list item text that should not be interpreted	Pass
with markdown symbols in the paragraph text that should not be interpreted	Pass
unordered lists close properly with preceding and following lines	Pass

Ridges.AI

harrison

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Running Evaluation

Passed

+/**
+ * Refactored Markdown Parser
+ *
+ * This refactored version improves readability and maintainability while
+ * preserving the exact same functionality as the original implementation.
+ *
+ * Key improvements:
+ * 1. Clearer separation of concerns with dedicated functions for each element type
+ * 2. Simplified state management for list handling
+ * 3. More descriptive variable names
+ * 4. Better code organization and flow
+ * 5. Removed unused functions
+ */
+/**
+ * Wraps text with HTML tags
+ * @param {string} text - Text to wrap
+ * @param {string} tag - HTML tag to use
+ * @returns {string} Wrapped HTML
+ */
 function wrap(text, tag) {
   return `<${tag}>${text}</${tag}>`;
+}
+function isTag(text, tag) {
+  return text.startsWith(`<${tag}>`);
+}
+function parser(markdown, delimiter, tag) {
+  const pattern = new RegExp(`${delimiter}(.+)${delimiter}`);
+  const replacement = `<${tag}>$1</${tag}>`;
+/**
+ * Parses bold text (__text__ -> <strong>text</strong>)
+ * Uses global regex to handle multiple bold segments in the same text
+ * @param {string} markdown - Markdown text
+ * @returns {string} HTML with bold formatting
+ */
+function parseBold(markdown) {
+  const pattern = /__(.+?)__/g;
+  const replacement = '<strong>$1</strong>';
   return markdown.replace(pattern, replacement);
+}
+function parse__(markdown) {
+  return parser(markdown, '__', 'strong');
+}
+function parse_(markdown) {
+  return parser(markdown, '_', 'em');
+/**
+ * Parses italic text (_text_ -> <em>text</em>)
+ * Uses global regex to handle multiple italic segments in the same text
+ * @param {string} markdown - Markdown text
+ * @returns {string} HTML with italic formatting
+ */
+function parseItalic(markdown) {
+  const pattern = /_(.+?)_/g;
+  const replacement = '<em>$1</em>';
+  return markdown.replace(pattern, replacement);
+}
+function parseText(markdown, list) {
+  const parsedText = parse_(parse__(markdown));
+  if (list) {
+    return parsedText;
+  } else {
+    return wrap(parsedText, 'p');
+  }
+/**
+ * Parses inline formatting (bold and italic)
+ * @param {string} markdown - Markdown text
+ * @returns {string} HTML with inline formatting
+ */
+function parseInlineFormatting(markdown) {
+  // Apply bold formatting first, then italic
+  return parseItalic(parseBold(markdown));
+}
+function parseHeader(markdown, list) {
+  let count = 0;
+  for (let i = 0; i < markdown.length; i++) {
+    if (markdown[i] === '#') {
+      count += 1;
+/**
+ * Parses header elements (# Header -> <h1>Header</h1>)
+ * @param {string} line - Markdown line
+ * @returns {string|null} HTML header or null if not a header
+ */
+function parseHeader(line) {
+  // Count leading # characters
+  let headerLevel = 0;
+  for (let i = 0; i < line.length; i++) {
+    if (line[i] === '#') {
+      headerLevel++;
     } else {
       break;
+    }
+  }
+  if (count === 0 || count > 6) {
+    return [null, list];
+  }
+  const headerTag = `h${count}`;
+  const headerHtml = wrap(markdown.substring(count + 1), headerTag);
+  if (list) {
+    return [`</ul>${headerHtml}`, false];
+  } else {
+    return [headerHtml, false];
+  // Valid headers have 1-6 # characters
+  if (headerLevel === 0 || headerLevel > 6) {
+    return null;
+  }
+  // Extract header content (skip # characters and the following space)
+  const headerContent = line.substring(headerLevel + 1);
+  const headerTag = `h${headerLevel}`;
+  return wrap(headerContent, headerTag);
+}
+function parseLineItem(markdown, list) {
+  if (markdown.startsWith('*')) {
+    const innerHtml = wrap(parseText(markdown.substring(2), true), 'li');
+    if (list) {
+      return [innerHtml, true];
+    } else {
+      return [`<ul>${innerHtml}`, true];
+    }
+/**
+ * Parses list items (* item -> <li>item</li>)
+ * @param {string} line - Markdown line
+ * @returns {string|null} HTML list item or null if not a list item
+ */
+function parseListItem(line) {
+  if (!line.startsWith('* ')) {
+    return null;
+  }
+  return [null, list];
+  // Extract list item content (skip '* ' prefix)
+  const itemContent = line.substring(2);
+  const formattedContent = parseInlineFormatting(itemContent);
+  return wrap(formattedContent, 'li');
+}
+function parseParagraph(markdown, list) {
+  if (!list) {
+    return [parseText(markdown, false), false];
+  } else {
+    return [`</ul>${parseText(markdown, false)}`, false];
+  }
+/**
+ * Parses paragraph elements
+ * @param {string} line - Markdown line
+ * @returns {string} HTML paragraph
+ */
+function parseParagraph(line) {
+  const formattedContent = parseInlineFormatting(line);
+  return wrap(formattedContent, 'p');
+}
+function parseLine(markdown, list) {
+  let [result, inListAfter] = parseHeader(markdown, list);
+  if (result === null) {
+    [result, inListAfter] = parseLineItem(markdown, list);
+  }
+  if (result === null) {
+    [result, inListAfter] = parseParagraph(markdown, list);
+/**
+ * Parses a single line of Markdown
+ * @param {string} line - Markdown line
+ * @returns {string} HTML output
+ */
+function parseLine(line) {
+  // Try parsing as header first
+  const header = parseHeader(line);
+  if (header !== null) {
+    return header;
+  }
+  if (result === null) {
+    throw new Error('Remove this line and implement the function');
+  // Try parsing as list item
+  const listItem = parseListItem(line);
+  if (listItem !== null) {
+    return listItem;
+  }
+  return [result, inListAfter];
+  // Default to paragraph
+  return parseParagraph(line);
+}
 /**
+ * @param {string} markdown
+ * @returns {string}
+ * Main Markdown parser function
+ * @param {string} markdown - Markdown text to parse
+ * @returns {string} HTML output
  */
 export function parse(markdown) {
   const lines = markdown.split('\n');
+  let result = '';
+  let list = false;
+  for (let i = 0; i < lines.length; i++) {
+    let [lineResult, newList] = parseLine(lines[i], list);
+    result += lineResult;
+    list = newList;
+  let html = '';
+  let inList = false;
+  for (const line of lines) {
+    // Parse the line to get basic HTML
+    const parsedLine = parseLine(line);
+    // Handle list opening and closing
+    if (parsedLine.startsWith('<li>')) {
+      // This is a list item
+      if (!inList) {
+        // Start a new list
+        html += '<ul>' + parsedLine;
+        inList = true;
+      } else {
+        // Continue existing list
+        html += parsedLine;
+      }
+    } else {
+      // This is not a list item
+      if (inList) {
+        // Close the existing list
+        html += '</ul>' + parsedLine;
+        inList = false;
+      } else {
+        // Just add the parsed line
+        html += parsedLine;
+      }
+    }
+  }
+  if (list) {
+    return result + '</ul>';
+  } else {
+    return result;
+  // Close any open list at the end
+  if (inList) {
+    html += '</ul>';
+  }
+  return html;
+}