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

awesome

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Running Evaluation

Passed

+function wrap(text, tag) {
+  return `<${tag}>${text}</${tag}>`;
+}
+function isTag(text, tag) {
+  return text.startsWith(`<${tag}>`);
+}
+/**
+ * A Markdown parser that converts Markdown syntax to HTML.
+ * Supports headers, bold/italic text, and unordered lists.
+ */
+class MarkdownParser {
+  constructor() {
+    this.inList = false;
+  }
+function parser(markdown, delimiter, tag) {
+  const pattern = new RegExp(`${delimiter}(.+)${delimiter}`);
+  const replacement = `<${tag}>$1</${tag}>`;
+  return markdown.replace(pattern, replacement);
+}
+  /**
+   * Wraps text with HTML tags
+   * @param {string} text - Text to wrap
+   * @param {string} tag - HTML tag to use
+   * @returns {string} Wrapped HTML
+   */
+  wrap(text, tag) {
+    return `<${tag}>${text}</${tag}>`;
+  }
+function parse__(markdown) {
+  return parser(markdown, '__', 'strong');
+}
+  /**
+   * Parses text with specified delimiter and converts to HTML tag
+   * @param {string} markdown - Markdown text to parse
+   * @param {string} delimiter - Delimiter to look for
+   * @param {string} tag - HTML tag to convert to
+   * @returns {string} Parsed HTML
+   */
+  parser(markdown, delimiter, tag) {
+    const pattern = new RegExp(`${delimiter}(.+)${delimiter}`);
+    const replacement = `<${tag}>$1</${tag}>`;
+    return markdown.replace(pattern, replacement);
+  }
+function parse_(markdown) {
+  return parser(markdown, '_', 'em');
+}
+  /**
+   * Parses bold text (__text__ -> <strong>text</strong>)
+   * @param {string} markdown - Markdown text
+   * @returns {string} HTML with bold formatting
+   */
+  parseBold(markdown) {
+    return this.parser(markdown, '__', 'strong');
+  }
+function parseText(markdown, list) {
+  const parsedText = parse_(parse__(markdown));
+  if (list) {
+    return parsedText;
+  } else {
+    return wrap(parsedText, 'p');
+  /**
+   * Parses italic text (_text_ -> <em>text</em>)
+   * @param {string} markdown - Markdown text
+   * @returns {string} HTML with italic formatting
+   */
+  parseItalic(markdown) {
+    return this.parser(markdown, '_', 'em');
+  }
+}
+function parseHeader(markdown, list) {
+  let count = 0;
+  for (let i = 0; i < markdown.length; i++) {
+    if (markdown[i] === '#') {
+      count += 1;
+  /**
+   * Parses text formatting and wraps in paragraph tags if not in list
+   * @param {string} markdown - Markdown text
+   * @param {boolean} inList - Whether we're currently in a list
+   * @returns {string} Formatted HTML text
+   */
+  parseText(markdown, inList) {
+    const parsedText = this.parseItalic(this.parseBold(markdown));
+    if (inList) {
+      return parsedText;
     } else {
+      break;
+      return this.wrap(parsedText, 'p');
+    }
+  }
+  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];
+  }
+}
+function parseLineItem(markdown, list) {
+  if (markdown.startsWith('*')) {
+    const innerHtml = wrap(parseText(markdown.substring(2), true), 'li');
+    if (list) {
+      return [innerHtml, true];
+    } else {
+      return [`<ul>${innerHtml}`, true];
+  /**
+   * Parses header markdown (# Header -> <h1>Header</h1>)
+   * @param {string} markdown - Markdown line
+   * @returns {string|null} HTML header or null if not a header
+   */
+  parseHeader(markdown) {
+    let count = 0;
+    for (let i = 0; i < markdown.length; i++) {
+      if (markdown[i] === '#') {
+        count += 1;
+      } else {
+        break;
+      }
+    }
+    if (count === 0 || count > 6) {
+      return null;
+    }
+    const headerTag = `h${count}`;
+    const headerContent = markdown.substring(count + 1);
+    const headerHtml = this.wrap(headerContent, headerTag);
+    // Close list if we were in one
+    if (this.inList) {
+      this.inList = false;
+      return `</ul>${headerHtml}`;
+    }
+    return headerHtml;
+  }
+  return [null, list];
+}
+function parseParagraph(markdown, list) {
+  if (!list) {
+    return [parseText(markdown, false), false];
+  } else {
+    return [`</ul>${parseText(markdown, false)}`, false];
+  /**
+   * Parses list item markdown (* item -> <li>item</li>)
+   * @param {string} markdown - Markdown line
+   * @returns {string|null} HTML list item or null if not a list item
+   */
+  parseListItem(markdown) {
+    if (markdown.startsWith('*')) {
+      const itemContent = markdown.substring(2);
+      const itemHtml = this.wrap(this.parseText(itemContent, true), 'li');
+      if (this.inList) {
+        return itemHtml;
+      } else {
+        this.inList = true;
+        return `<ul>${itemHtml}`;
+      }
+    }
+    return null;
+  }
+}
+function parseLine(markdown, list) {
+  let [result, inListAfter] = parseHeader(markdown, list);
+  if (result === null) {
+    [result, inListAfter] = parseLineItem(markdown, list);
+  /**
+   * Parses paragraph markdown (plain text -> <p>text</p>)
+   * @param {string} markdown - Markdown line
+   * @returns {string} HTML paragraph
+   */
+  parseParagraph(markdown) {
+    // Close list if we were in one
+    if (this.inList) {
+      this.inList = false;
+      return `</ul>${this.parseText(markdown, false)}`;
+    }
+    return this.parseText(markdown, false);
+  }
+  if (result === null) {
+    [result, inListAfter] = parseParagraph(markdown, list);
+  /**
+   * Parses a single line of markdown
+   * @param {string} markdown - A single line of markdown
+   * @returns {string} HTML output for the line
+   */
+  parseLine(markdown) {
+    // Try to parse as header first
+    let result = this.parseHeader(markdown);
+    if (result !== null) {
+      return result;
+    }
+    // Try to parse as list item
+    result = this.parseListItem(markdown);
+    if (result !== null) {
+      return result;
+    }
+    // Default to paragraph
+    return this.parseParagraph(markdown);
+  }
+  if (result === null) {
+    throw new Error('Remove this line and implement the function');
+  /**
+   * Parses complete markdown text into HTML
+   * @param {string} markdown - Complete markdown text
+   * @returns {string} Complete HTML output
+   */
+  parse(markdown) {
+    const lines = markdown.split('\n');
+    let result = '';
+    for (const line of lines) {
+      result += this.parseLine(line);
+    }
+    // Close any open list at the end
+    if (this.inList) {
+      result += '</ul>';
+    }
+    return result;
+  }
+  return [result, inListAfter];
+}
 /**
+ * @param {string} markdown
+ * @returns {string}
+ * Parses markdown text and converts it to HTML
+ * @param {string} markdown - Markdown text to parse
+ * @returns {string} HTML representation of the markdown
  */
 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;
+  }
+  if (list) {
+    return result + '</ul>';
+  } else {
+    return result;
+  }
+  const parser = new MarkdownParser();
+  return parser.parse(markdown);
+}