mantine-custom-components

Mantine Custom Components Skill

Component template

import {
  Box, BoxProps, createVarsResolver, ElementProps,
  factory, Factory, getRadius, MantineRadius,
  StylesApiProps, useProps, useStyles,
} from '@mantine/core';
import classes from './MyComponent.module.css';

export type MyComponentStylesNames = 'root' | 'inner';
export type MyComponentVariant = 'filled' | 'outline';
export type MyComponentCssVariables = { root: '--my-radius' };

export interface MyComponentProps
  extends BoxProps, StylesApiProps<MyComponentFactory>, ElementProps<'div'> {
  radius?: MantineRadius;
}

export type MyComponentFactory = Factory<{
  props: MyComponentProps;
  ref: HTMLDivElement;
  stylesNames: MyComponentStylesNames;
  vars: MyComponentCssVariables;
  variant: MyComponentVariant;
}>;

const defaultProps = { radius: 'md' } satisfies Partial<MyComponentProps>;

const varsResolver = createVarsResolver<MyComponentFactory>((_theme, { radius }) => ({
  root: { '--my-radius': getRadius(radius) },
}));

export const MyComponent = factory<MyComponentFactory>((_props) => {
  const props = useProps('MyComponent', defaultProps, _props);
  const { classNames, className, style, styles, unstyled, vars, attributes, radius, ...others } = props;

  const getStyles = useStyles<MyComponentFactory>({
    name: 'MyComponent', classes, props,
    className, style, classNames, styles, unstyled, vars, attributes, varsResolver,
  });

  return <Box {...getStyles('root')} {...others} />;
});

MyComponent.displayName = '@mantine/core/MyComponent';
MyComponent.classes = classes;

Factory variant — which to use

Use polymorphicFactory sparingly — it adds TypeScript overhead and slows IDE autocomplete.