text: mangle: {
      mangle = {
          toplevel: true,
      }
      input: {
          var e = eval, x = 42;
          (function() {
              console.log(e("typeof x"));
          })();
      }
      expect: {
          var e = eval, x = 42;
          (function() {
              console.log(e("typeof x"));
          })();
      }
      expect_stdout: true
  }
  
  compress: {
      options = {
          collapse_vars: true,
          inline: true,
          unused: true,
      }
      input: {
          console.log(function() {
              var a = 42;
              return eval("typeof a");
          }(), function(e) {
              var a = null;
              return e("typeof a");
          }(eval), function(eval) {
              var a = false;
              return eval("typeof a");
          }(eval), function(f) {
              var a = "STRING";
              var eval = f;
              return eval("typeof a");
          }(eval), function(g) {
              var a = eval;
              function eval() {
                  return g;
              }
              return eval()("typeof a");
          }(eval));
      }
      expect: {
          console.log(function() {
              var a = 42;
              return eval("typeof a");
          }(), (0, eval)("typeof a"), function(eval) {
              var a = false;
              return eval("typeof a");
          }(eval), function(f) {
              var a = "STRING";
              var eval = f;
              return eval("typeof a");
          }(eval), function(g) {
              var a = eval;
              function eval() {
                  return g;
              }
              return eval()("typeof a");
          }(eval));
      }
      expect_stdout: "number undefined boolean string undefined"
  }
  
  call_arg_1: {
      mangle = {
          toplevel: true,
      }
      input: {
          var z = "foo";
          (function() {
              var z = false;
              (function(e) {
                  var z = 42;
                  e("console.log(typeof z)");
              })(eval);
          })();
      }
      expect: {
          var z = "foo";
          (function() {
              var o = false;
              (function(o) {
                  var a = 42;
                  o("console.log(typeof z)");
              })(eval);
          })();
      }
      expect_stdout: true
  }
  
  call_arg_2: {
      mangle = {
          toplevel: true,
      }
      input: {
          function eval() {
              console.log("PASS");
          }
          var z = "foo";
          (function() {
              var z = false;
              (function(e) {
                  var z = 42;
                  e("console.log(typeof z)");
              })(eval);
          })();
      }
      expect: {
          function n() {
              console.log("PASS");
          }
          var o = "foo";
          (function() {
              var o = false;
              (function(o) {
                  var n = 42;
                  o("console.log(typeof z)");
              })(n);
          })();
      }
      expect_stdout: "PASS"
  }
  