Function updateBasePath

test/helpers/docsify-init.js:82–89

      };

      const updateBasePath = config => {
        if (config.basePath) {
          config.basePath = new URL(
            config.basePath,
            process.env.TEST_HOST
          ).href;
        }
      };

      // Config as function
      if (typeof options.config === 'function') {