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

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Passed

+function wrap(text, tag) {
+  return `<${tag}>${text}</${tag}>`;
+}
+// REFACTORING NOTES:
+// - Renamed functions for clarity: wrap -> wrapInTag, parser -> replaceWithTags
+// - Consolidated inline formatting logic into applyInlineFormatting
+// - Improved variable naming and added comments
+// - Maintained exact same behavior and processing order
+function isTag(text, tag) {
+  return text.startsWith(`<${tag}>`);
+/**
+ * Wraps text in HTML tags
+ * @param {string} text - The text to wrap
+ * @param {string} tag - The HTML tag name
+ * @returns {string} The wrapped text
+ */
+function wrapInTag(text, tag) {
+  return `<${tag}>${text}</${tag}>`;
+}
+function parser(markdown, delimiter, tag) {
+/**
+ * Replaces text between delimiters with HTML tags
+ * @param {string} text - The text to process
+ * @param {string} delimiter - The delimiter (e.g., '__', '_')
+ * @param {string} tag - The HTML tag to use
+ * @returns {string} The processed text
+ */
+function replaceWithTags(text, delimiter, tag) {
   const pattern = new RegExp(`${delimiter}(.+)${delimiter}`);
   const replacement = `<${tag}>$1</${tag}>`;
+  return markdown.replace(pattern, replacement);
+}
+function parse__(markdown) {
+  return parser(markdown, '__', 'strong');
+  return text.replace(pattern, replacement);
+}
+function parse_(markdown) {
+  return parser(markdown, '_', 'em');
+/**
+ * Applies inline formatting (bold and italic) to text
+ * Note: Processing order matters - bold (__) is processed before italic (_)
+ * @param {string} text - The text to format
+ * @returns {string} The formatted text
+ */
+function applyInlineFormatting(text) {
+  // Process bold formatting first (__text__ -> <strong>text</strong>)
+  const withBold = replaceWithTags(text, '__', 'strong');
+  // Then process italic formatting (_text_ -> <em>text</em>)
+  const withItalic = replaceWithTags(withBold, '_', 'em');
+  return withItalic;
+}
+function parseText(markdown, list) {
+  const parsedText = parse_(parse__(markdown));
+  if (list) {
+    return parsedText;
+/**
+ * Processes text content with inline formatting
+ * @param {string} text - The text to process
+ * @param {boolean} isListItem - Whether this text is part of a list item
+ * @returns {string} The processed text
+ */
+function processText(text, isListItem) {
+  const formattedText = applyInlineFormatting(text);
+  if (isListItem) {
+    return formattedText;
   } else {
+    return wrap(parsedText, 'p');
+    return wrapInTag(formattedText, 'p');
+  }
+}
+function parseHeader(markdown, list) {
+  let count = 0;
+  for (let i = 0; i < markdown.length; i++) {
+    if (markdown[i] === '#') {
+      count += 1;
+/**
+ * Parses header lines (starting with # characters)
+ * @param {string} line - The markdown line to parse
+ * @param {boolean} isInList - Whether we're currently inside a list
+ * @returns {Array} [htmlContent, stillInList] or [null, isInList] if not a header
+ */
+function parseHeader(line, isInList) {
+  // Count consecutive # characters at the start
+  let headerLevel = 0;
+  for (let i = 0; i < line.length; i++) {
+    if (line[i] === '#') {
+      headerLevel += 1;
     } else {
       break;
+    }
+  }
+  if (count === 0 || count > 6) {
+    return [null, list];
+  // Valid headers have 1-6 # characters
+  if (headerLevel === 0 || headerLevel > 6) {
+    return [null, isInList];
+  }
+  const headerTag = `h${count}`;
+  const headerHtml = wrap(markdown.substring(count + 1), headerTag);
+  if (list) {
+  const headerTag = `h${headerLevel}`;
+  const headerContent = line.substring(headerLevel + 1).trim();
+  const headerHtml = wrapInTag(headerContent, headerTag);
+  // If we were in a list, close it before the header
+  if (isInList) {
     return [`</ul>${headerHtml}`, false];
   } else {
     return [headerHtml, false];
+  }
+}
+function parseLineItem(markdown, list) {
+  if (markdown.startsWith('*')) {
+    const innerHtml = wrap(parseText(markdown.substring(2), true), 'li');
+    if (list) {
+      return [innerHtml, true];
+/**
+ * Parses list item lines (starting with *)
+ * @param {string} line - The markdown line to parse
+ * @param {boolean} isInList - Whether we're currently inside a list
+ * @returns {Array} [htmlContent, stillInList] or [null, isInList] if not a list item
+ */
+function parseListItem(line, isInList) {
+  if (line.startsWith('*')) {
+    const itemContent = line.substring(2); // Skip '* ' prefix
+    const formattedContent = processText(itemContent, true); // true = isListItem
+    const listItemHtml = wrapInTag(formattedContent, 'li');
+    if (isInList) {
+      // Continue existing list
+      return [listItemHtml, true];
     } else {
+      return [`<ul>${innerHtml}`, true];
+      // Start new list
+      return [`<ul>${listItemHtml}`, true];
+    }
+  }
+  return [null, list];
+  return [null, isInList];
+}
+function parseParagraph(markdown, list) {
+  if (!list) {
+    return [parseText(markdown, false), false];
+/**
+ * Parses paragraph lines (regular text)
+ * @param {string} line - The markdown line to parse
+ * @param {boolean} isInList - Whether we're currently inside a list
+ * @returns {Array} [htmlContent, stillInList]
+ */
+function parseParagraph(line, isInList) {
+  if (!isInList) {
+    // Not in a list, process as regular paragraph
+    return [processText(line, false), false];
   } else {
+    return [`</ul>${parseText(markdown, false)}`, false];
+    // Was in a list, close it and start paragraph
+    return [`</ul>${processText(line, false)}`, false];
+  }
+}
+function parseLine(markdown, list) {
+  let [result, inListAfter] = parseHeader(markdown, list);
+  if (result === null) {
+    [result, inListAfter] = parseLineItem(markdown, list);
+/**
+ * Parses a single line of markdown by trying different parsers in order
+ * Order: headers -> list items -> paragraphs
+ * @param {string} line - The markdown line to parse
+ * @param {boolean} isInList - Whether we're currently inside a list
+ * @returns {Array} [htmlContent, stillInList]
+ */
+function parseLine(line, isInList) {
+  // Try to parse as header first
+  let [htmlContent, stillInList] = parseHeader(line, isInList);
+  // If not a header, try to parse as list item
+  if (htmlContent === null) {
+    [htmlContent, stillInList] = parseListItem(line, isInList);
+  }
+  if (result === null) {
+    [result, inListAfter] = parseParagraph(markdown, list);
+  // If not a list item, parse as paragraph
+  if (htmlContent === null) {
+    [htmlContent, stillInList] = parseParagraph(line, isInList);
+  }
+  if (result === null) {
+    throw new Error('Remove this line and implement the function');
+  // This should never happen as parseParagraph always returns a result
+  if (htmlContent === null) {
+    throw new Error('Unable to parse line: ' + line);
+  }
+  return [result, inListAfter];
+  return [htmlContent, stillInList];
+}
 /**
+ * @param {string} markdown
+ * @returns {string}
+ * Main markdown parser function
+ * Converts markdown text to HTML
+ * @param {string} markdown - The markdown text to parse
+ * @returns {string} The HTML representation
  */
 export function parse(markdown) {
   const lines = markdown.split('\n');
+  let result = '';
+  let list = false;
+  let htmlResult = '';
+  let isInList = false;
+  // Process each line
   for (let i = 0; i < lines.length; i++) {
+    let [lineResult, newList] = parseLine(lines[i], list);
+    result += lineResult;
+    list = newList;
+    const [lineHtml, stillInList] = parseLine(lines[i], isInList);
+    htmlResult += lineHtml;
+    isInList = stillInList;
+  }
+  if (list) {
+    return result + '</ul>';
+  // Close any open list at the end
+  if (isInList) {
+    return htmlResult + '</ul>';
   } else {
+    return result;
+    return htmlResult;
+  }
+}