Create tags.js

Author: atherdon

src/chat/tags.js

@@ -0,0 +1,47 @@
+import os from 'os';
+
+const platform = os.platform();
+const newLine = platform === 'win32' ? '\r\n' : '\n';
+
+
+// Common flags for regex patterns
+const REGEX_FLAGS = 'gim';
+
+// Define regex patterns as constants
+const REGEXP_HEADER = new RegExp(`${newLine}(#+)(.*)`, 'gim');
+const REGEXP_H2 = /^## (.*)$/gim;
+const REGEXP_H3 = /^### (.*)$/gim;
+
+const REGEXP_IMAGE = /!\[([^\[]+)\]\(([^\)]+)\)/g;
+const REGEXP_LINK = /\[([^\[]+)\]\(([^\)]+)\)/g;
+const REGEXP_STRONG = /(\*\*|__)(.*?)(\*?)\1/g;
+const REGEXP_DEL = /~~(.*?)~~/g;
+const REGEXP_Q = /:\"(.*?)\"/g;
+const REGEXP_CODE = /`(.*?)`/g;
+
+const REGEXP_BLOCKQUOTE = new RegExp(`${newLine}(>|\\>)(.*)`, 'g');
+const REGEXP_HR = new RegExp(`${newLine}-{5,}`, 'g');
+const REGEXP_PARAGRAPH = new RegExp(`${newLine}(.+?)${newLine}`, 'g');
+
+const REGEXP_BR = new RegExp(`((${newLine}){2,})`, 'g');
+const REGEXP_EMPTY_BLOCKQUOTE = /<\/blockquote><blockquote>/g;
+const REGEXP_EM = /(\s|>)(\*|_)(.*?)\2(\s|<)/g;
+
+// Export as an organized object
+export const MarkdownTagsRegexes = {
+  REGEXP_HEADER,
+  REGEXP_H2,
+  REGEXP_H3,
+  REGEXP_IMAGE,
+  REGEXP_LINK,
+  REGEXP_STRONG,
+  REGEXP_DEL,
+  REGEXP_Q,
+  REGEXP_CODE,
+  REGEXP_BLOCKQUOTE,
+  REGEXP_HR,
+  REGEXP_PARAGRAPH,
+  REGEXP_BR,
+  REGEXP_EMPTY_BLOCKQUOTE,
+  REGEXP_EM,
+};