The mbstring extension isn't enabled by default in PHP, so this dependency should be declared so that "composer install" will display an appropriate message, avoiding a runtime failure (and when it eventually gets extension install capabilities via Pickle or similar, it could even enable mbstring automatically).
The mbstring extension isn't enabled by default in PHP, so this dependency should be declared so that "composer install" will display an appropriate message, avoiding a runtime failure (and when it eventually gets extension install capabilities via Pickle or similar, it could even enable mbstring automatically).