我是 Typescript 的新手，目前正在將我們的應(yīng)用程序從 React JSX 轉(zhuǎn)換為 TS，所以如果我誤解了錯(cuò)誤，請(qǐng)告訴我。我得到Object is possibly 'undefined'一個(gè)prop string是從父母?jìng)飨聛?lái)的component。所述string被內(nèi)限定INITIAL_STATE在`作為父private static INITIAL_STATE = {  password: ''};這意味著子組件中的propforpassword永遠(yuǎn)不應(yīng)該是undefined. 子組件是interface InterfaceProps {  onlyOneLeft?: boolean;  isEnabled?: boolean;  signInMethod?: any;  onUnlink?: any;  password?: string;  passwordTwo?: string;  handleFormSubmit?: any;  handleInputChange?: any;}const ChildComponent = ({ password }: InterfaceProps): any => {  const regUpCase = new RegExp('^(?=.*[A-Z])');  const regLwCase = new RegExp('^(?=.*[a-z])');  const regDigit = new RegExp('^(?=.*[0-9])');  const regChar = new RegExp('^(?=.*[*@!#%&()^~{}_-])');  const pwLength = password.length >= 8;  const pwUpCase = regUpCase.test(password);  const pwLwCase = regLwCase.test(password);  const pwChar = regChar.test(password);  const pwDigit = regDigit.test(password);  const pwSpecial = pwChar || pwDigit;  const isInvalid =    !pwLength || !pwUpCase || !pwLwCase || !pwSpecial || password === '';  return isInvalid ? (    ... // return when password isInvalid  ) : (    ... // return when password !isInvalid  );};ChildComponent.propTypes = {  password: PropTypes.string};export default ChildComponent;OnpwLength我看到了Object is possibly 'undefined'on 的錯(cuò)誤password prop。對(duì){ pwUpCase, pwLwCase, pwChar, pwDigit }在password prop我收到的錯(cuò)誤Argument of type 'string | undefined' is not assignable to parameter of type 'string'. Type 'undefined' is not assignable to type 'string'.在這種情況下，我的想法是props password永遠(yuǎn)不會(huì)undefined因?yàn)樗诟附M件中具有初始state值''。我是否仍然需要檢查password未定義？或者也許正確的方法應(yīng)該是移動(dòng)isInvalid到父組件？我寧愿我不需要，所以任何建議都會(huì)非常有幫助。