There are currently no TypeScript definitions or documentation available for the Material UI v5 TextField component

Check out the playground link here.

Why is it that TypeScript typings on TextField are not functioning properly?

import TextField from "@mui/material/TextField";
import Select from "@mui/material/Select";

export default function App() {
  return (
    <>
      {/* When hovering over 'multiline': does NOT display docs/types ==> not good */}
      <TextField multiline={true} />
      {/* When hovering over 'multiline': displays docs/types ==> good */}
      <Select multiline={true} />
    </>
  );
}

I decided to include a Select component to show the expected behavior, but I am puzzled as to why everything works as expected with Select (or other components), but not with TextField.

Answer №1

It seems like the type definition for TextField in Material-UI is not defined in the same way as it is for Select, causing issues with IDEs providing descriptions on hover.

To resolve this, you can manually provide a type definition for TextField using a similar approach as the type definition for Select, but utilizing InputProps.

Here's a workaround that I have tested in a working sandbox:

tsconfig.json

{
  "compilerOptions": {
    "lib": ["es6", "dom"],
    "noImplicitAny": true,
    "noImplicitThis": true,
    "strictNullChecks": true,
    "esModuleInterop": true,
    "jsx": "react-jsx",
    "typeRoots": ["node_modules/@types", "src/local-types"],
    "paths": {
      "@mui/material/TextField": ["./src/local-types/mui__material__TextField"]
    }
  },
  "exclude": ["node_modules", "src/local-types/**"]
}

src/local-types/mui__material__TextField (two double-underscores)

import { InputProps } from "@mui/material";

declare const TextField: ((props: InputProps) => JSX.Element) & {
  muiName: string;
};

https://i.sstatic.net/ykux8.png

export default TextField;

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