输入'字符串 | null' 不可分配给“SetStateAction”类型的参数<string> '.Type 'null' 不可分配给类型 'SetStateAction<string> '</string></string>

Question

<Autocomplete
  value={value}
  onChange={(event, newValue) => {
    setValue(newValue);
  }}
  inputValue={inputValue}
  onInputChange={(event, newInputValue) => {
    setInputValue(newInputValue);
  }}
  id="controllable-states-demo"
  options={options}
  style={{ width: 300 }}
  renderInput={(params) => <TextField {...params} label="Controllable" variant="outlined" />}
/>

Please, help me out, I am new to typescript... In the below image you will see the error.

Thankyou.

Answer 1

As the error says, newValue can be either a string or null. It requires a string, so you should test the value of newValue before you try to use it.

For example:

 if newValue !== nil {
   setValue(newValue)
 }