Convert the existing JavaScript code to TypeScript in order to resolve the implicit error

I'm currently working on my initial React project using Typescript, but I've hit a snag with the code snippet below.

An error message is popping up -

Parameter 'name' implicitly has an 'any' type.ts(7006)

Here is the complete code snippet

export default function App() {
  const CHARACTER_LIMIT = 20;
  const [values, setValues] = React.useState({
    name: "Hello"
  });

  const handleChange = name => event => {
    setValues({ ...values, [name]: event.target.value });
  };

  return (
    <div className="App">
      <h1>Text Field with character limit</h1>
      <TextField
        label="Limit"
        inputProps={{
          maxlength: CHARACTER_LIMIT
        }}
        value={values.name}
        helperText={`${values.name.length}/${CHARACTER_LIMIT}`}
        onChange={handleChange("name")}
        margin="normal"
        variant="outlined"
      />
    </div>
  );
}
const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

Any suggestions on how to resolve this issue without resorting to setting "noImplicitAny": false

Answer №1

It is recommended to specify explicit types for both name and event:

const updateValue = (name: string) => (event: React.ChangeEvent<HTMLInputElement>) => {
  setInputs({ ...inputs, [name]: event.target.value });
};

Answer №2

Include a type declaration for the name argument in your arrow function:

const handleInput = (name: string) => event => {
  updateData({ ...formData, [name]: event.target.value });
};

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