weekends

Finished
77}
88
99function parser(markdown, delimiter, tag) {
10 const pattern = new RegExp(`${delimiter}(.+)${delimiter}`);
10 // Escape special regex characters in delimiter
11 const escapedDelimiter = delimiter.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
12 const pattern = new RegExp(`${escapedDelimiter}(.+)${escapedDelimiter}`);
1113 const replacement = `<${tag}>$1</${tag}>`;
1214 return markdown.replace(pattern, replacement);
1315}
1416
15function parse__(markdown) {
16 return parser(markdown, '__', 'strong');
17// Refactored: Renamed parse__ to parseBold for clarity (using correct markdown syntax)
18function parseBold(markdown) {
19 return parser(markdown, '**', 'strong');
1720}
1821
19function parse_(markdown) {
20 return parser(markdown, '_', 'em');
22// Refactored: Renamed parse_ to parseItalic for clarity (using correct markdown syntax)
23function parseItalic(markdown) {
24 return parser(markdown, '*', 'em');
2125}
2226
27// Refactored: Updated to use descriptive function names
2328function parseText(markdown, list) {
24 const parsedText = parse_(parse__(markdown));
29 const parsedText = parseItalic(parseBold(markdown));
2530 if (list) {
2631 return parsedText;
2732 } else {
2934 }
3035}
3136
37// Refactored: Improved header parsing with clearer logic and comments
3238function parseHeader(markdown, list) {
33 let count = 0;
39 // Count consecutive # characters at the start
40 let headerLevel = 0;
3441 for (let i = 0; i < markdown.length; i++) {
3542 if (markdown[i] === '#') {
36 count += 1;
43 headerLevel += 1;
3744 } else {
3845 break;
3946 }
4047 }
41 if (count === 0 || count > 6) {
48
49 // Valid headers have 1-6 # characters
50 if (headerLevel === 0 || headerLevel > 6) {
4251 return [null, list];
4352 }
44 const headerTag = `h${count}`;
45 const headerHtml = wrap(markdown.substring(count + 1), headerTag);
53
54 const headerTag = `h${headerLevel}`;
55 const headerContent = markdown.substring(headerLevel + 1).trim();
56 const headerHtml = wrap(headerContent, headerTag);
57
58 // Close any open list before adding header
4659 if (list) {
4760 return [`</ul>${headerHtml}`, false];
4861 } else {
5063 }
5164}
5265
66// Refactored: Improved list item parsing with clearer logic
5367function parseLineItem(markdown, list) {
5468 if (markdown.startsWith('*')) {
55 const innerHtml = wrap(parseText(markdown.substring(2), true), 'li');
69 const listItemContent = markdown.substring(2).trim();
70 const parsedContent = parseText(listItemContent, true); // true indicates we're in a list
71 const listItemHtml = wrap(parsedContent, 'li');
72
5673 if (list) {
57 return [innerHtml, true];
74 // Continue existing list
75 return [listItemHtml, true];
5876 } else {
59 return [`<ul>${innerHtml}`, true];
77 // Start new list
78 return [`<ul>${listItemHtml}`, true];
6079 }
6180 }
6281 return [null, list];
6382}
6483
84// Refactored: Improved paragraph parsing with clearer logic
6585function parseParagraph(markdown, list) {
6686 if (!list) {
87 // No open list, create paragraph normally
6788 return [parseText(markdown, false), false];
6889 } else {
90 // Close open list before creating paragraph
6991 return [`</ul>${parseText(markdown, false)}`, false];
7092 }
7193}
7294
95// Refactored: Improved parsing logic with clearer control flow
7396function parseLine(markdown, list) {
97 // Try parsing as header first
7498 let [result, inListAfter] = parseHeader(markdown, list);
99
100 // If not a header, try parsing as list item
75101 if (result === null) {
76102 [result, inListAfter] = parseLineItem(markdown, list);
77103 }
104
105 // If neither header nor list item, treat as paragraph
78106 if (result === null) {
79107 [result, inListAfter] = parseParagraph(markdown, list);
80108 }
109
110 // This should never happen with valid input
81111 if (result === null) {
82 throw new Error('Remove this line and implement the function');
112 throw new Error('Invalid markdown line');
83113 }
114
84115 return [result, inListAfter];
85116}
86117
87118/**
88 * @param {string} markdown
89 * @returns {string}
119 * Parses markdown text and converts it to HTML
120 * @param {string} markdown - The markdown text to parse
121 * @returns {string} - The resulting HTML
90122 */
123// Refactored: Improved main parsing function with clearer logic
91124export function parse(markdown) {
92125 const lines = markdown.split('\n');
93 let result = '';
94 let list = false;
126 let htmlResult = '';
127 let isInList = false;
128
129 // Process each line of markdown
95130 for (let i = 0; i < lines.length; i++) {
96 let [lineResult, newList] = parseLine(lines[i], list);
97 result += lineResult;
98 list = newList;
131 const [lineHtml, newInListState] = parseLine(lines[i], isInList);
132 htmlResult += lineHtml;
133 isInList = newInListState;
99134 }
100 if (list) {
101 return result + '</ul>';
135
136 // Close any unclosed list at the end
137 if (isInList) {
138 return htmlResult + '</ul>';
102139 } else {
103 return result;
140 return htmlResult;
104141 }
105142}
Test NameStatus
parsing italics
Fail
parsing bold text
Fail
mixed normal, italics and bold text
Fail
with a little bit of everything
Fail
parses normal text as a paragraph
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 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

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