chore: escpapeMarkdown fixes RELEASE (#834)

packages/libs/escape-markdown/src/escapeMarkdown.ts

@@ -1,8 +1,16 @@
 const mdChars = ['*', '#', '/', '(', ')', '[', ']', '_', '<', '>', '`'];
 
+const createRegexp = (prefix: string) => {
+  const regex = mdChars.map((char) => `${prefix}${char}`).join('|');
+  return new RegExp(`(${regex})`, 'g');
+};
+
 export const escapeMarkdown = (s: string) => {
   if (typeof s !== 'string') return s;
-  const escapedTextRegexp = mdChars.map((char) => `\\${char}`).join('|');
-  const regexp = new RegExp(`(${escapedTextRegexp})`, 'g');
-  return s.replace(regexp, '\\$1');
+  return s.replace(createRegexp('\\'), '\\$1');
+};
+
+export const unescapeMarkdown = (s: string) => {
+  if (typeof s !== 'string') return s;
+  return s.replace(createRegexp('\\\\'), (match) => match.slice(1));
 };

packages/libs/escape-markdown/test/escapeMarkdown.test.ts

@@ -1,4 +1,4 @@
-import { escapeMarkdown } from '../src';
+import { escapeMarkdown, unescapeMarkdown } from '../src';
 
 describe('escape markdown', () => {
   it('should escape markdown chars', () => {
@@ -11,3 +11,18 @@ describe('escape markdown', () => {
     expect(escapeMarkdown(source as any)).toEqual(source);
   });
 });
+
+describe('unescape markdown', () => {
+  it('should unescape markdown chars', () => {
+    const source =
+      '\\*asterisk\\* \\_underscore\\_ \\(brackets1\\) \\[brackets2\\] \\`backtick\\`';
+    expect(unescapeMarkdown(source)).toEqual(
+      '*asterisk* _underscore_ (brackets1) [brackets2] `backtick`',
+    );
+  });
+
+  it('ignore non-strings', () => {
+    const source = 1234;
+    expect(unescapeMarkdown(source as any)).toEqual(source);
+  });
+});