Function sveltePreprocess

src/autoProcess.ts:59–279

(
  {
    aliases,
    markupTagName = 'template',
    sourceMap = process?.env?.NODE_ENV === 'development' || false,
    ...rest
  } = {} as AutoPreprocessOptions,
)

};

export function sveltePreprocess(
  {
    aliases,
    markupTagName = 'template',
    sourceMap = process?.env?.NODE_ENV === 'development' || false,
    ...rest
  } = {} as AutoPreprocessOptions,
): AutoPreprocessGroup {
  const transformers = rest as Transformers;

  if (aliases?.length) {
    addLanguageAlias(aliases);
  }

  function resolveLanguageArgs(lang: string, alias?: string | null) {
    const langOpts = transformers[lang];
    const aliasOpts = alias ? transformers[alias] : undefined;

    const opts: Record<string, any> = {};

    if (typeof langOpts === 'object') {
      Object.assign(opts, langOpts);
    }

    Object.assign(opts, getLanguageDefaults(lang), getLanguageDefaults(alias));

    if (lang !== alias && typeof aliasOpts === 'object') {
      Object.assign(opts, aliasOpts);
    }

    if (sourceMap && lang in SOURCE_MAP_PROP_MAP) {
      const [path, value] = SOURCE_MAP_PROP_MAP[lang];

      setProp(opts, path, value);
    }

    return opts;
  }

  function getTransformerOptions(
    lang?: string | null,
    alias?: string | null,
    { ignoreAliasOverride }: { ignoreAliasOverride?: boolean } = {},
  ): TransformerOptions<unknown> {
    if (lang == null) return null;

    const langOpts = transformers[lang];
    const aliasOpts = alias ? transformers[alias] : undefined;

    if (!ignoreAliasOverride && typeof aliasOpts === 'function') {
      return aliasOpts;
    }

    if (typeof langOpts === 'function') return langOpts;
    if (aliasOpts === false || langOpts === false) return false;

    return resolveLanguageArgs(lang, alias);
  }