Implemented parse for export Name from Module variants.

lib/ast.js

@@ -789,11 +789,13 @@ var AST_Import = DEFNODE("Import", "imported_name imported_names module_name", {
     }
 });
 
-var AST_Export = DEFNODE("Export", "exported_definition exported_value is_default", {
+var AST_Export = DEFNODE("Export", "exported_definition exported_value is_default exported_names module_name", {
     $documentation: "An `export` statement",
     $propdoc: {
         exported_definition: "[AST_Defun|AST_Definitions|AST_DefClass?] An exported definition",
         exported_value: "[AST_Node?] An exported value",
+        exported_names: "[string*] List of exported names",
+        module_name: "[string?] Name of the file to load exports from",
         is_default: "[Boolean] Whether this is the default exported value of this module"
     },
     _walk: function (visitor) {
@@ -1179,6 +1181,9 @@ var AST_SymbolImport = DEFNODE("SymbolImport", null, {
 var AST_SymbolImportForeign = DEFNODE("SymbolImportForeign", null, {
     $documentation: "A symbol imported from a module, but it is defined in the other module, and its real name is irrelevant for this module's purposes",
 }, AST_Symbol);
+var AST_SymbolImportAsterisk = DEFNODE("SymbolImportAsterisk", null, {
+    $documentation: "All symbols imported / exported from a module",
+}, AST_Symbol);
 
 var AST_Label = DEFNODE("Label", "references", {
     $documentation: "Symbol naming a label (declaration)",

lib/parse.js

@@ -2236,17 +2236,86 @@ function parse($TEXT, options) {
         })
     }
 
+    function import_nameAsterisk() {
+        var start = S.token;
+        var foreign_name;
+        var name;
+
+        next();
+
+        var end = prev();
+
+        name = new AST_Symbol({
+            name: '*',
+            start: start,
+            end: end,
+        });
+
+        foreign_name = new AST_SymbolImportForeign({
+            name: '*',
+            start: start,
+            end: end,
+        });
+
+        return new AST_NameImport({
+            start: start,
+            foreign_name: foreign_name,
+            name: name,
+            end: end,
+        })
+    }
+
     function export_() {
         var start = S.token;
         var is_default;
         var exported_value;
         var exported_definition;
+        var exported_names;
 
         if (is("keyword", "default")) {
             is_default = true;
             next();
         }
 
+        if (is("punc", "{")) {
+            next();
+            exported_names = [];
+            while (!is("punc", "}")) {
+                exported_names.push(import_name());
+                if (is("punc", ",")) {
+                    next();
+                }
+            }
+            next();
+        } else if (is("operator", "*")) {
+            var st = prev();
+            exported_names = [import_nameAsterisk()];
+        }
+
+        if (exported_names) {
+            expect_token("name", "from");
+
+            var mod_str = S.token;
+            if (mod_str.type !== 'string') {
+                unexpected();
+            }
+            next();
+
+            return new AST_Export({
+                start: start,
+                is_default: is_default,
+                exported_names: exported_names,
+                module_name: new AST_String({
+                    start: mod_str,
+                    value: mod_str.value,
+                    quote: mod_str.quote,
+                    end: mod_str,
+                }),
+                end: prev(),
+            });
+        }
+
+
         var is_definition =
             is("keyword", "var") || is("keyword", "let") || is("keyword", "const") ||
             is("keyword", "class") || is("keyword", "function");

test/mocha/export.js

@@ -0,0 +1,41 @@
+var assert = require("assert");
+var uglify = require("../../");
+
+describe("Export", function() {
+    it ("Should parse export directives", function() {
+
+        var inputs = [
+            ['export * from "a.js"', ['*'], "a.js"],
+            ['export {A} from "a.js"', ['A'], "a.js"],
+            ['export {A, B} from "a.js"', ['A', 'B'], "a.js"],
+        ];
+
+        var test = function(code) {
+            return uglify.parse(code, {fromString: true});
+        };
+
+        var extractNames = function(symbols) {
+            var ret = [];
+            for (var i = 0; i < symbols.length; i++) {
+                ret.push(symbols[i].name.name)
+            }
+            return ret;
+        };
+
+        for (var i = 0; i < inputs.length; i++) {
+            //console.log(inputs[i][0]);
+            var ast = test(inputs[i][0]);
+            var names = inputs[i][1];
+            var filename = inputs[i][2];
+            assert(ast instanceof uglify.AST_Toplevel);
+            assert.equal(ast.body.length, 1);
+            var st = ast.body[0];
+            assert(st instanceof uglify.AST_Export);
+            var actualNames = extractNames(st.exported_names);
+            assert.deepEqual(actualNames, names);
+            assert.equal(st.module_name.value, filename)
+        }
+
+
+    })
+});