packages/postcss-merge-rules/src/lib/ensureCompatibility.js
function isSupportedCached(feature, browsers) {
  const key = JSON.stringify({ feature, browsers });
  let result = isSupportedCache[key];

  if (!result) {
    result = isSupported(feature, browsers);
    isSupportedCache[key] = result;
  }

  return result;
}
function isSupportedCached(feature, browsers) {
  const key = JSON.stringify({ feature, browsers });
  let result = isSupportedCache[key];

  if (!result) {
    result = isSupported(feature, browsers);
    isSupportedCache[key] = result;
  }

  return result;
}
function isSupportedCached ( feature , browsers ) { const key = JSON . stringify ( { feature , browsers } ) ; let result = isSupportedCache [ key ] ; if ( ! result ) { result = isSupported ( feature , browsers ) ; isSupportedCache [ key ] = result ; } return result ; }
Move to util in future
Move to util in future