from doesn’t need to be a reserved word; when not part of an import or export statement, it can still be assigned

Author: GeoffreyBooth

src/lexer.coffee

@@ -796,7 +796,7 @@ JS_KEYWORDS = [
   'return', 'throw', 'break', 'continue', 'debugger', 'yield'
   'if', 'else', 'switch', 'for', 'while', 'do', 'try', 'catch', 'finally'
   'class', 'extends', 'super'
-  'export', 'import', 'from', 'default'
+  'import', 'export', 'default'
 ]
 
 # CoffeeScript-only keywords.

test/modules.coffee

@@ -275,3 +275,14 @@ test "export as aliases members imported from another module", ->
       baz as qux
     } from 'lib';"""
   eq toJS(input), output
+
+
+# Edge cases
+
+test "`from` not part of an import or export statement can still be assigned", ->
+  input = "from = yes"
+  output = """
+    var from;
+
+    from = true;"""
+  eq toJS(input), output