E0049: binary number literal has no digits
Decimal number literals start with 0b and require at least one digit. It is an
error to write 0b with no following digits:
let mask = 0b
To fix this error, write digits after 0b:
let mask = 0b1000;
Alternatively, remove b to create a 0 number literal.
Introduced in quick-lint-js version 0.2.0.