(source_file [0, 0] - [4, 0]
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    (let_binding [0, 4] - [3, 3]
      pattern: (value_identifier [0, 4] - [0, 5])
      body: (function [0, 8] - [3, 3]
        parameter: (value_identifier [0, 8] - [0, 9])
        body: (switch_expression [1, 2] - [3, 3]
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          (switch_match [2, 2] - [2, 22]
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                (lazy_pattern [2, 5] - [2, 12]
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              (tuple_item_pattern [2, 14] - [2, 15]
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/home/pedro/Desktop/test-filetypes/rescript/lazy.res	0 ms	(MISSING "unpack" [2, 11] - [2, 11])