Function warn

web/assets/vue@2.6.12/vue.esm.js:11798–11800

(msg, range, tip)

      var tips = [];

      var warn = function (msg, range, tip) {
        (tip ? tips : errors).push(msg);
      };

      if (options) {
        if (process.env.NODE_ENV !== 'production' && options.outputSourceRange) {