From e3bd223dac41ed8fcbbc3a139d78c68bcd50f628 Mon Sep 17 00:00:00 2001
From: Richard van Velzen <rvanvelzen@experty.com>
Date: Tue, 25 Aug 2015 10:53:35 +0200
Subject: [PATCH 1/3] Don't change sequences that influence lexical binding in
 calls

Fixes #782
---
 lib/compress.js            | 14 +++++---------
 test/compress/issue-782.js | 23 +++++++++++++++++++++++
 2 files changed, 28 insertions(+), 9 deletions(-)
 create mode 100644 test/compress/issue-782.js

diff --git a/lib/compress.js b/lib/compress.js
index ac306fc3..51dd66f8 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1910,15 +1910,11 @@ merge(Compressor.prototype, {
         if (!compressor.option("side_effects"))
             return self;
         if (!self.car.has_side_effects(compressor)) {
-            // we shouldn't compress (1,eval)(something) to
-            // eval(something) because that changes the meaning of
-            // eval (becomes lexical instead of global).
-            var p;
-            if (!(self.cdr instanceof AST_SymbolRef
-                  && self.cdr.name == "eval"
-                  && self.cdr.undeclared()
-                  && (p = compressor.parent()) instanceof AST_Call
-                  && p.expression === self)) {
+            // we shouldn't compress (1,func)(something) to
+            // func(something) because that changes the meaning of
+            // the func (becomes lexical instead of global).
+            var p = compressor.parent();
+            if (!(p instanceof AST_Call && p.expression === self)) {
                 return self.cdr;
             }
         }
diff --git a/test/compress/issue-782.js b/test/compress/issue-782.js
new file mode 100644
index 00000000..cce15fd1
--- /dev/null
+++ b/test/compress/issue-782.js
@@ -0,0 +1,23 @@
+remove_redundant_sequence_items: {
+    options = { side_effects: true };
+    input: {
+        (0, 1, logThis)();
+        (0, 1, _decorators.logThis)();
+    }
+    expect: {
+        (0, logThis)();
+        (0, _decorators.logThis)();
+    }
+}
+
+dont_remove_lexical_binding_sequence: {
+    options = { side_effects: true };
+    input: {
+        (0, logThis)();
+        (0, _decorators.logThis)();
+    }
+    expect: {
+        (0, logThis)();
+        (0, _decorators.logThis)();
+    }
+}

From fcde6109b0138502a445a7571adc810b5b9e68ee Mon Sep 17 00:00:00 2001
From: Richard van Velzen <rvanvelzen@experty.com>
Date: Thu, 6 Aug 2015 21:27:46 +0200
Subject: [PATCH 2/3] Fix bad parsing of `new new x()()` constructs

Fixes #739
---
 lib/parse.js         |  6 +++---
 test/compress/new.js | 12 ++++++++++++
 2 files changed, 15 insertions(+), 3 deletions(-)
 create mode 100644 test/compress/new.js

diff --git a/lib/parse.js b/lib/parse.js
index ab72ad2d..496a673f 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -1114,7 +1114,7 @@ function parse($TEXT, options) {
         });
     };
 
-    var new_ = function() {
+    var new_ = function(allow_calls) {
         var start = S.token;
         expect_token("operator", "new");
         var newexp = expr_atom(false), args;
@@ -1129,7 +1129,7 @@ function parse($TEXT, options) {
             expression : newexp,
             args       : args,
             end        : prev()
-        }), true);
+        }), allow_calls);
     };
 
     function as_atom_node() {
@@ -1173,7 +1173,7 @@ function parse($TEXT, options) {
 
     var expr_atom = function(allow_calls) {
         if (is("operator", "new")) {
-            return new_();
+            return new_(allow_calls);
         }
         var start = S.token;
         if (is("punc")) {
diff --git a/test/compress/new.js b/test/compress/new.js
new file mode 100644
index 00000000..4b2c51c3
--- /dev/null
+++ b/test/compress/new.js
@@ -0,0 +1,12 @@
+new_statement: {
+    input: {
+        new x(1);
+        new x(1)(2);
+        new x(1)(2)(3);
+        new new x(1);
+        new new x(1)(2);
+        new (new x(1))(2);
+        (new new x(1))(2);
+    }
+    expect_exact: "new x(1);new x(1)(2);new x(1)(2)(3);new new x(1);new new x(1)(2);new new x(1)(2);(new new x(1))(2);"
+}

From 3a5f35484606914b54fb80540f51b37fae20282b Mon Sep 17 00:00:00 2001
From: Ingo Struck <git@ingostruck.de>
Date: Thu, 27 Aug 2015 19:38:33 +0200
Subject: [PATCH 3/3] allow for anonymous map generation using string type
 check

---
 tools/node.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/node.js b/tools/node.js
index 29d5632d..eba2bc1d 100644
--- a/tools/node.js
+++ b/tools/node.js
@@ -131,7 +131,7 @@ exports.minify = function(files, options) {
     var stream = UglifyJS.OutputStream(output);
     toplevel.print(stream);
 
-    if(options.outSourceMap){
+    if (options.outSourceMap && "string" === typeof options.outSourceMap) {
         stream += "\n//# sourceMappingURL=" + options.outSourceMap;
     }