fix auto email pattern not recognized

__tests__/ExpensiMark-HTML-test.js

@@ -1442,3 +1442,31 @@ test('Test strikethrough with link with URL that contains tilde', () => {
     testString = '~[Example Link](https://example.com/?~example=~~~ex~)~';
     expect(parser.replace(testString)).toBe('<del><a href="https://example.com/?~example=~~~ex~" target="_blank" rel="noreferrer noopener">Example Link</a></del>');
 });
+
+test('Test autoEmail with markdown of <pre>, <code>, <a>, <mention-user> and <em> tag', () => {
+    const testString = '`code`[email protected] '
+        + '```code block```[email protected] '
+        + '[Google](https://google.com)[email protected] '
+        + '[email protected]_ '
+        + '_test\n\[email protected]_ '
+        + '`[email protected]` '
+        + '```[email protected]``` '
+        + '@[email protected] '
+        + '_@[email protected]_ '
+        + '[https://staging.new.expensify.com/details/[email protected]](https://staging.new.expensify.com/details/[email protected]) '
+        + '[test italic style wrap email [email protected]_ inside a link](https://google.com) ';
+
+    const resultString = '<code>code</code><a href="mailto:[email protected]">[email protected]</a> '
+        + '<pre>code&#32;block</pre><a href="mailto:[email protected]">[email protected]</a> '
+        + '<a href="https://google.com" target="_blank" rel="noreferrer noopener">Google</a><a href="mailto:[email protected]">[email protected]</a> '
+        + '<em><a href="mailto:[email protected]">[email protected]</a></em> '
+        + '<em>test<br /><br /><a href="mailto:[email protected]">[email protected]</a></em> '
+        + '<code>[email protected]</code> '
+        + '<pre>[email protected]</pre> '
+        + '<mention-user>@[email protected]</mention-user> '
+        + '<em><mention-user>@[email protected]</mention-user></em> '
+        + '<a href="https://staging.new.expensify.com/details/[email protected]" target="_blank" rel="noreferrer noopener">https://staging.new.expensify.com/details/[email protected]</a> '
+        + '<a href="https://google.com" target="_blank" rel="noreferrer noopener">test italic style wrap email <em>[email protected]</em> inside a link</a> ';
+
+    expect(parser.replace(testString)).toBe(resultString);
+});

lib/ExpensiMark.js

@@ -177,7 +177,7 @@ export default class ExpensiMark {
             {
                 name: 'autoEmail',
                 regex: new RegExp(
-                    `(?![^<]*>|[^<>]*<\\/(?!em))([^\\w'#%+-]|^|<em>)${CONST.REG_EXP.MARKDOWN_EMAIL}(?!((?:(?!<a).)+)?<\\/a>|[^<]*(<\\/pre>|<\\/code>))`,
+                    `([^\\w'#%+-]|^)${CONST.REG_EXP.MARKDOWN_EMAIL}(?!((?:(?!<a).)+)?<\\/a>|[^<>]*<\\/(?!em))`,
                     'gim',
                 ),
                 replacement: '$1<a href="mailto:$2">$2</a>',