docs: function matchAccept (properties, langs) {
      let match = null;
      let priority = 0;
  
      base: for(const lang of langs) {
          for (const property of properties) {
              if (property.priority === 0) {
                  break;
              }
  
              if (priority < property.priority){
                  if (lang.lang === property.lang) {
                      match = lang.raw;
                      priority = property.priority + 0.001;
                      break;
                  }
                  if (lang.bcp47.language === property.bcp47.language) {
                      match = lang.raw;
                      priority = property.priority;
                      break;
                  }
              }
          }
      }
  
      return match;
  }