Function warnUnused

Scripts/ace/worker-javascript.js:7330–7362

(name, tkn, type, unused_opt)

      };

      var warnUnused = function(name, tkn, type, unused_opt) {
        var line = tkn.line;
        var chr  = tkn.from;
        var raw_name = tkn.raw_text || name;

        if (unused_opt === undefined) {
          unused_opt = state.option.unused;
        }

        if (unused_opt === true) {
          unused_opt = "last-param";
        }

        var warnable_types = {
          "vars": ["var"],
          "last-param": ["var", "param"],
          "strict": ["var", "param", "last-param"]
        };

        if (unused_opt) {
          if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) {
            if (!tkn.exported) {
              warningAt("W098", line, chr, raw_name);
            }
          }
        }

        unuseds.push({
          name: name,
          line: line,
          character: chr
        });
      };

      var checkUnused = function(func, key) {
        var type = func[key];