@mui/material/styles/cssUtils.d.ts

Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.

import { CSSProperties } from "./createMixins.js";
export function isUnitless(value: string): boolean;
export function getUnit(input: string): string;
export function toUnitless(value: string): number;
export function convertLength(baseFontSize: string): (length: string, toUnit: string) => string;
export interface AlignPropertyParams {
  size: number;
  grid: number;
}
export function alignProperty(params: AlignPropertyParams): number;
export interface FontGridParams {
  lineHeight: number;
  pixels: number;
  htmlFontSize: number;
}
export function fontGrid(params: FontGridParams): number;
export interface ResponsivePropertyParams {
  cssProperty: string;
  min: number;
  max: number;
  unit?: string;
  breakpoints?: number[];
  transform?: (value: number) => number;
}
export function responsiveProperty(params: ResponsivePropertyParams): CSSProperties;