lesslint/test/fixture/require-before-space.less

lint your less code

@zero: 0;

body{
    margin: @zero;
    padding: @zero;
}


    .aa{
        .bb{
            width: 0;
                .qq{
                    height: 0;
                }
        }
    color: #ff0;
}

.foo {
    .transition(width 1s);
    .size(30px, 20px);
    .clearfix();
}