The `@mdi/light-js` package provides JavaScript and TypeScript distribution of Material Design Icons Light, containing path data for all icons in the collection. It's designed for developers who need lightweight, tree-shakeable icon data in their web applications, particularly those using module bundlers like Webpack or Rollup. This package is ideal for frontend developers working with modern JavaScript frameworks who want to incorporate Material Design icons without the overhead of full SVG or webfont implementations.