Parse asterisk within import statement

Author: GeoffreyBooth

src/grammar.coffee

@@ -364,7 +364,7 @@ grammar =
   ImportSpecifier: [
     o 'Identifier'
     o 'Identifier IMPORT_AS Identifier',        -> new ImportSpecifier $1, $3
-    o '* IMPORT_AS Identifier',                 -> new ImportSpecifier {value: '*'}, $3
+    o 'IMPORT_ALL IMPORT_AS Identifier',        -> new ImportSpecifier null, $3
   ]
 
   NamedImports: [

src/lexer.coffee

@@ -448,6 +448,8 @@ exports.Lexer = class Lexer
     if value is ';'
       @seenFor = @seenImport = @seenExport = no
       tag = 'TERMINATOR'
+    else if value is '*' and (@seenImport or @seenExport)
+      tag = 'IMPORT_ALL'
     else if value in MATH            then tag = 'MATH'
     else if value in COMPARE         then tag = 'COMPARE'
     else if value in COMPOUND_ASSIGN then tag = 'COMPOUND_ASSIGN'

src/nodes.coffee

@@ -1285,7 +1285,7 @@ exports.ImportSpecifier = class ImportSpecifier extends Base
   children: ['original', 'alias']
 
   compileNode: (o) ->
-    return [@makeCode("#{@original.value} as #{@alias.value}")]
+    return [@makeCode("#{if @original? then @original.value else '*'} as #{@alias.value}")]
 
 #### Assign