Typescript error in components

Author: Christonn93Created Apr 15, 2026Updated Apr 15, 2026

I have noticed some type errors in the input and textArea component.


Component: Input

typescript
import { cn } from '@/lib/utils';
import { Platform, TextInput } from 'react-native';

function Input({
  className,
  placeholderClassName,
  ...props
}: React.ComponentProps<typeof TextInput>) {
  return (
    <TextInput
      className={cn(
        'dark:bg-input/30 border-input bg-background text-foreground flex h-10 w-full min-w-0 flex-row items-center rounded-md border px-3 py-1 text-base leading-5 shadow-sm shadow-black/5 sm:h-9',
        props.editable === false &&
          cn(
            'opacity-50',
            Platform.select({ web: 'disabled:pointer-events-none disabled:cursor-not-allowed' })
          ),
        Platform.select({
          web: cn(
            'placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground outline-none transition-[color,box-shadow] md:text-sm',
            'focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px]',
            'aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive'
          ),
          native: 'placeholder:text-muted-foreground/50',
        }),
        className
      )}
      {...props}
    />
  );
}

export { Input };

Error:

bash
Property 'placeholderClassName' does not exist on type 'TextInputProps'.

Component: Textarea

typescript
import { cn } from '@/lib/utils';
import { Platform, TextInput } from 'react-native';

function Textarea({
  className,
  multiline = true,
  numberOfLines = Platform.select({ web: 2, native: 8 }), // On web, numberOfLines also determines initial height. On native, it determines the maximum height.
  placeholderClassName,
  ...props
}: React.ComponentProps<typeof TextInput>) {
  return (
    <TextInput
      className={cn(
        'text-foreground border-input dark:bg-input/30 flex min-h-16 w-full flex-row rounded-md border bg-transparent px-3 py-2 text-base shadow-sm shadow-black/5 md:text-sm',
        Platform.select({
          web: 'placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive field-sizing-content resize-y outline-none transition-[color,box-shadow] focus-visible:ring-[3px] disabled:cursor-not-allowed',
        }),
        props.editable === false && 'opacity-50',
        className
      )}
      placeholderClassName={cn('text-muted-foreground', placeholderClassName)}
      multiline={multiline}
      numberOfLines={numberOfLines}
      textAlignVertical="top"
      {...props}
    />
  );
}

export { Textarea };

Error:

bash
Property 'placeholderClassName' does not exist on type 'TextInputProps'.

No overload matches this call.
  Overload 1 of 2, '(props: TextInputProps): TextInput', gave the following error.
    Type '{ allowFontScaling?: boolean | undefined; autoCapitalize?: "none" | "sentences" | "words" | "characters" | undefined; autoComplete?: "off" | "email" | "password" | "url" | "name" | ... 52 more ... | undefined; ... 161 more ...; numberOfLines: number | undefined; }' is not assignable to type 'IntrinsicAttributes & IntrinsicClassAttributes<TextInput> & Readonly<TextInputProps>'.
      Property 'placeholderClassName' does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes<TextInput> & Readonly<TextInputProps>'.
  Overload 2 of 2, '(props: TextInputProps, context: any): TextInput', gave the following error.
    Type '{ allowFontScaling?: boolean | undefined; autoCapitalize?: "none" | "sentences" | "words" | "characters" | undefined; autoComplete?: "off" | "email" | "password" | "url" | "name" | ... 52 more ... | undefined; ... 161 more ...; numberOfLines: number | undefined; }' is not assignable to type 'IntrinsicAttributes & IntrinsicClassAttributes<TextInput> & Readonly<TextInputProps>'.
      Property 'placeholderClassName' does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes<TextInput> & Readonly<TextInputProps>'.

Source: founded-labs/react-native-reusables