--description--

Given a string that may include some bold text in Markdown, return the equivalent HTML string.

• Bold text in Markdown is any text that starts and ends with two asterisks (**) or two underscores (__).
• There cannot be any spaces between the text and the asterisks or underscores, but there can be spaces in the text itself.
• Convert all bold occurrences to HTML b tags and return the string.

For example, given "**This is bold**", return "<b>This is bold</b>".

Note: The console may not display HTML tags in strings when logging messages. Check the browser console to see logs with tags included.

--hints--

parseBold("**This is bold**") should return "<b>This is bold</b>".

assert.equal(parseBold("**This is bold**"), "<b>This is bold</b>");

parseBold("__This is also bold__") should return "<b>This is also bold</b>".

assert.equal(parseBold("__This is also bold__"), "<b>This is also bold</b>");

parseBold("**This is not bold **") should return "**This is not bold **".

assert.equal(parseBold("**This is not bold **"), "**This is not bold **");

parseBold("__ This is also not bold__") should return "__ This is also not bold__".

assert.equal(parseBold("__ This is also not bold__"), "__ This is also not bold__");

parseBold("The **quick** brown fox __jumps__ over the **lazy** dog.") should return "The <b>quick</b> brown fox <b>jumps</b> over the <b>lazy</b> dog.".

assert.equal(parseBold("The **quick** brown fox __jumps__ over the **lazy** dog."), "The <b>quick</b> brown fox <b>jumps</b> over the <b>lazy</b> dog.");

--seed--

--seed-contents--

function parseBold(markdown) {
  return markdown;
}

--solutions--

function parseBold(markdown) {
  markdown = markdown.replace(/\*\*(\S(?:.*?\S)?)\*\*/g, "<b>$1</b>");
  markdown = markdown.replace(/__(\S(?:.*?\S)?)__/g, "<b>$1</b>");

  return markdown;
}