Add ability to resolve useref dependencies from vinyl stream

[robrich]

If I'm precompiling the resources (scss/less/coffee/typescript/etc) I have to write these to a temp directory only to be pulled in by useref. I'd love it if gulp-useref could accept a gulp stream and pick off matching dependencies, avoiding the need to use .tmp. See https://github.com/google/web-starter-kit/blob/master/gulpfile.js#L122

[jonkemp]

Been thinking a bit about how this would work. I don't see why you would want useref at that point. What useref does is scan the HTML for the build blocks and replace them. It can also give you the asset list from the build blocks which we are using to concatenate those files into one file based on the path in the build block. If you are using streams wouldn't you just use gulp-concat?

[robrich]

Check out https://github.com/google/web-starter-kit/blob/master/gulpfile.js where they must write less files converted to css to a temp directory so useref can find them.

[jonkemp]

Could you mock out a gulp task so I can see what it should look like?

[robrich]

Sure.

[gevgeny]

+1 for this feature

[noamokman]

+1

[jonkemp]

Should be fixed by #116.