ConstVALID_NUM_TYPES order:
decimallatin_lettermonth_nameday_of_weekgreek_lettergreek_letter_english_nameromanchinese_wordschinese_financialchinese_heavenly_stemchinese_earthly_branchchinese_solar_termcyrillic_letterhebrew_letterbinaryoctalhexadecimalarabicenglish_cardinalenglish_wordsfrench_wordsastrological_signnato_phonetic
Array of all valid conversion types (excluding special types 'invalid', 'empty', 'unknown')
Sorted by priority to use (used mainly for detection: when a string is detected as being possible to be of multiple types, the higher the priority, the more likely it is of that type)
You can use compareNumTypeOrder to sort array of num types by VALID_NUM_TYPES order