Function error

resources/vega.min.js:106–108

()

        return arguments.length ? ((r = +t), this) : r;
      },
      error() {
        return (r >= v && n(e || "error", "ERROR", arguments), this);
      },
      warn() {
        return (r >= _ && n(e || "warn", "WARN", arguments), this);
      },