E0051: octal number literal has no digits
Octal number literals start with 0o and require at least one digit. It is an
error to write 0o with no following digits:
let mask = 0o
To fix this error, write digits after 0o:
let mask = 0o700;
Alternatively, remove o to create a 0 number literal.
Introduced in quick-lint-js version 0.2.0.