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Export statements are only allowed at the toplevel of a module.

-- Testcase --
export let x = 1;
-- End --

-- Args --
-R
-- End --

-- Expect stderr --
Syntax error: Exports may only appear at top level of a module
In line 1, byte 1:

 `export let x = 1;`
  ^-- Near here


-- End --


Export statements are not allowed within functions or nested blocks.

-- Testcase --
import "./files/test.uc";
-- End --

-- File test.uc --
{
	export let x = 1;
}
-- End --

-- Args --
-R
-- End --

-- Expect stderr --
Syntax error: Unable to compile module './files/test.uc':

  | Syntax error: Exports may only appear at top level of a module
  | In ./files/test.uc, line 2, byte 2:
  |
  |  `    export let x = 1;`
  |       ^-- Near here

In [stdin], line 1, byte 25:

 `import "./files/test.uc";`
  Near here --------------^


-- End --


Duplicate export names should result in an error.

-- Testcase --
import "./files/test-duplicate.uc";
-- End --

-- File test-duplicate.uc --
let x = 1, y = 2;

export { x };
export { y as x };
-- End --

-- Args --
-R
-- End --

-- Expect stderr --
Syntax error: Unable to compile module './files/test-duplicate.uc':

  | Syntax error: Duplicate export 'x' for module './files/test-duplicate.uc'
  | In ./files/test-duplicate.uc, line 4, byte 15:
  |
  |  `export { y as x };`
  |   Near here ----^

In [stdin], line 1, byte 35:

 `import "./files/test-duplicate.uc";`
  Near here ------------------------^


-- End --