Function getStylusImplementation

src/utils.js:219–230

* This function is not Webpack-specific and can be used by tools wishing to mimic `stylus-loader`'s behaviour, so its signature should not be changed. * @param {LoaderContext} loaderContext loader context * @param {LoaderOptions["implementation"]} implementation stylus implementation * @returns {

(loaderContext, implementation)

 * @returns {Promise<(source: string, options: StylusOptions) => Renderer>} resolved stylus implementation
 */
async function getStylusImplementation(loaderContext, implementation) {
  if (!implementation || typeof implementation === "string") {
    const specifier = implementation || "stylus";
    const { default: resolved } = await import(
      path.isAbsolute(specifier) ? pathToFileURL(specifier).href : specifier
    );

    return resolved;
  }

  return implementation;
}

/**
 * @param {LoaderContext} loaderContext loader context