CPF
/^d{3}.d{3}.d{3}-d{2}$/
CNPJ
/^d{2}.d{3}.d{3}/d{4}-d{2}$/
both
/(^d{3}.d{3}.d{3}-d{2}$)|(^d{2}.d{3}.d{3}/d{4}-d{2}$)/
CPF
/^d{3}.d{3}.d{3}-d{2}$/
CNPJ
/^d{2}.d{3}.d{3}/d{4}-d{2}$/
both
/(^d{3}.d{3}.d{3}-d{2}$)|(^d{2}.d{3}.d{3}/d{4}-d{2}$)/