--- 1 ---
5
SyntaxError: Unterminated regular expression literal '/'
SyntaxError: Unterminated regular expression literal '/'
--- 2 ---
4
SyntaxError: Unterminated regular expression literal '/\'
SyntaxError: Unterminated regular expression literal '/\'
SyntaxError: Unterminated regular expression literal '/\'
SyntaxError: Unterminated regular expression literal '/\'
SyntaxError: Unterminated regular expression literal '/\'
4
5
--- 3 ---
SyntaxError: Unterminated regular expression literal '/['
SyntaxError: Unterminated regular expression literal '/['
SyntaxError: Unterminated regular expression literal '/['
SyntaxError: Unterminated regular expression literal '/['
5
SyntaxError: Unterminated regular expression literal '/['
SyntaxError: Invalid regular expression: unmatched parentheses
--- 4 ---
9
9
5
5
4
5
--- 5 ---
5
5
5
6
6
5