This component is created on top of the Mantine library. It requires Mantine 9.x and React 19.

Mantine Mask wraps any React node and renders a radial or linear spotlight via CSS masking. You can drive the spotlight by the cursor (withCursorMask) or fix it at coordinates (maskX/maskY), tune its size (maskRadius or maskRadiusX/maskRadiusY), and control edge softness with maskFeather or the transparency start/end stops.

• Two variants: radial (elliptical spotlight) and linear (band/stripe effect)
• Cursor-follow or static spotlight positioning
• Responsive maskRadius: accepts Mantine breakpoint objects for viewport-adaptive sizing
• Mask.Group: compound component to synchronize spotlights across multiple Mask children
• maskSmoothing: eased multi-stop gradients that eliminate hard edge artifacts
• maskTransition: CSS transitions for smooth fade-in/fade-out on activation
• onPositionChange: callback to track spotlight position in real time
• Activation modes: always, hover, pointer, focus — with controlled/uncontrolled state
• Animation: lerp (smooth easing) or instant cursor following
• Inversion: invertMask creates hole effects (transparent center, visible outside)
• Boundary clamping with configurable padding
• Content-agnostic: works with images, cards, text, and any React content

npm install @gfazioli/mantine-mask

or

yarn add @gfazioli/mantine-mask

After installation import package styles at the root of your application:

import '@gfazioli/mantine-mask/styles.css';

import { Mask } from '@gfazioli/mantine-mask';
import { Box, Text } from '@mantine/core';

function Demo() {
  return (
    <Mask withCursorMask maskRadius={320}>
      <Box p="lg">
        <Text fw={700}>Spotlight content</Text>
        <Text c="dimmed">Move your cursor to focus this area.</Text>
      </Box>
    </Mask>
  );
}

Your support helps me:

• Keep the project actively maintained with timely bug fixes and security updates
• Add new features, improve performance, and refine the developer experience
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• Ensure long‑term sustainability without relying on ad hoc free time
• Prioritize community requests and roadmap items that matter most

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