Wrong file map with Less import mixins.less usage

[hzlzh]

Less：

- lib-mixins.less
- tips.less
- style-index.less

style-index.less below

@import "lib-mixins";
@import "tips";

Finally got this
{"version":3,"sources":["lib-reset.less","tips.less","lib-mixins.less"],"names":[],"mappings":

Hope to get tips.less to be sourced!
{"version":3,"sources":["tips.less"],"names":[],"mappings":

any ideas?

[hzlzh]

Closed!
Caused by this weixin/gulp-lazyimagecss#1
and here reworkcss/css#90