[CS2] return and export default can now accept implicit objects (#4532)

* Start with the test I want to pass: return an implicit (braces-less) object

* Update Rewriter class to follow pattern of nodes.coffee; move debugging snippet to where it’ll work in CS2

* Allow export default implicit object

* `return` assumes a continuation onto the next line *if* the next line is indented

* Fix comment; improve test

test/modules.coffee

@@ -353,6 +353,28 @@ test "export default object", ->
     };"""
   eq toJS(input), output
 
+test "export default implicit object", ->
+  input = "export default foo: 'bar', baz: 'qux'"
+  output = """
+    export default {
+      foo: 'bar',
+      baz: 'qux'
+    };"""
+  eq toJS(input), output
+
+test "export default multiline implicit object", ->
+  input = """
+    export default
+      foo: 'bar',
+      baz: 'qux'
+    """
+  output = """
+    export default {
+      foo: 'bar',
+      baz: 'qux'
+    };"""
+  eq toJS(input), output
+
 test "export default assignment expression", ->
   input = "export default foo = 'bar'"
   output = """

test/objects.coffee

@@ -575,3 +575,15 @@ test "#4324: Shorthand after interpolated key", ->
   obj = {"#{1}": 1, a}
   eq 1, obj[1]
   eq 2, obj.a
+
+test "#1263: Braceless object return", ->
+  fn = ->
+    return
+      a: 1
+      b: 2
+      c: -> 3
+
+  obj = fn()
+  eq 1, obj.a
+  eq 2, obj.b
+  eq 3, obj.c()