Function resolveCSSOptions

packages/vite/src/node/plugins/css.ts:214–225

(
  options: CSSOptions | undefined,
)

  }

export function resolveCSSOptions(
  options: CSSOptions | undefined,
): ResolvedCSSOptions {
  const resolved = mergeWithDefaults(_cssConfigDefaults, options ?? {})
  if (resolved.transformer === 'lightningcss') {
    resolved.lightningcss ??= {}
    resolved.lightningcss.targets ??= convertTargets(
      ESBUILD_BASELINE_WIDELY_AVAILABLE_TARGET,
    )
  }
  return resolved
}

const cssModuleRE = new RegExp(`\\.module${CSS_LANGS_RE.source}`)
const directRequestRE = /[?&]direct\b/