Function utility

packages/tailwindcss/src/compat/plugin-api.test.ts:695–700

(name: string, themeKey: string)

              base,
              module: plugin(function ({ matchUtilities, theme }) {
                function utility(name: string, themeKey: string) {
                  matchUtilities(
                    { [name]: (value) => ({ class="st">'--value': value }) },
                    { values: theme(themeKey) },
                  )
                }

                utility(class="st">'my-aspect', class="st">'aspectRatio')
                utility(class="st">'my-backdrop-brightness', class="st">'backdropBrightness')