13af6ab5fSopenharmony_ci# ``throw`` statements cannot accept values of arbitrary types 23af6ab5fSopenharmony_ci 33af6ab5fSopenharmony_ciRule ``arkts-limited-throw`` 43af6ab5fSopenharmony_ci 53af6ab5fSopenharmony_ci**Severity: error** 63af6ab5fSopenharmony_ci 73af6ab5fSopenharmony_ciArkTS supports throwing only objects of the class ``Error`` or any 83af6ab5fSopenharmony_ciderived class. Throwing an arbitrary type (i.e., a ``number`` or ``string``) 93af6ab5fSopenharmony_ciis prohibited. 103af6ab5fSopenharmony_ci 113af6ab5fSopenharmony_ci 123af6ab5fSopenharmony_ci## TypeScript 133af6ab5fSopenharmony_ci 143af6ab5fSopenharmony_ci 153af6ab5fSopenharmony_ci``` 163af6ab5fSopenharmony_ci 173af6ab5fSopenharmony_ci throw 4 183af6ab5fSopenharmony_ci throw "" 193af6ab5fSopenharmony_ci throw new Error() 203af6ab5fSopenharmony_ci 213af6ab5fSopenharmony_ci``` 223af6ab5fSopenharmony_ci 233af6ab5fSopenharmony_ci## ArkTS 243af6ab5fSopenharmony_ci 253af6ab5fSopenharmony_ci 263af6ab5fSopenharmony_ci``` 273af6ab5fSopenharmony_ci 283af6ab5fSopenharmony_ci throw new Error() 293af6ab5fSopenharmony_ci 303af6ab5fSopenharmony_ci``` 313af6ab5fSopenharmony_ci 323af6ab5fSopenharmony_ci 33