| legacyletexpr.js:1:13:1:38 | let (x  ... ) x + y | 0 | legacyletexpr.js:1:18:1:23 | x = 23 | legacyletexpr.js:1:34:1:38 | x + y |
| legacyletexpr.js:1:13:1:38 | let (x  ... ) x + y | 1 | legacyletexpr.js:1:26:1:31 | y = 19 | legacyletexpr.js:1:34:1:38 | x + y |
