Merge pull request #205 from dsm23/chore/convert-css-variables-to-ts

chore(cssVariables): convert cssVariables to .ts

Author: mergify[bot]

src/cssVariables.js renamed to src/cssVariables.ts

@@ -9,4 +9,4 @@ export const cssVariables = {
     md: 768,
     sm: 640,
   },
-};
+} as const;