Extra semicolons are usually introduced by mistake, for example because:
- It was meant to be replaced by one more property declaration, but this was forgotten.
- There was a typo which lead the semicolon to be doubled, i.e.
;;.
See
- CERT, MSC12-C. - Detect and remove code that has no effect or is never
executed
- CERT, MSC51-J. - Do not place a semicolon immediately following an if, for,
or while condition
- CERT, EXP15-C. - Do not place a semicolon on the same line as an if, for,
or while statement