error: Expected ';', '}' or <eof>
 --> $DIR/tests/test262-parser/fail/d10f6a336c2a5aab.js:1:17
  |
1 | while(true) let a
  |                 ^
  |
note: This is the expression part of an expression statement
 --> $DIR/tests/test262-parser/fail/d10f6a336c2a5aab.js:1:13
  |
1 | while(true) let a
  |             ^^^