How to filter files in galp stream?

Question

Node.js

There is a tax code

return gulp.src(paths.src)
    .pipe(webpackStream(wpConfig, webpack2))
    // .pipe(header(config.header.js, {updated: (new Date()).toUTCString()}))
    .pipe(gulp.dest(paths.dist))
    .pipe(browserSync.stream())

I would like to use gulp-header to insert headers into files. The problem is that webpackStream spits out both js files and .map.js sort maps. And gulp-header inserts a header into everything that is included in it, thereby spoiling the sourcemap.
How can I filter .map.js files so that they don't get processed by gulp-header but reach gulp.dest()?
Or maybe gulp-header pipe after writing to disk. Then you just need to filter .map files.
Damn, when js will be overwritten twice. In short, some kind of crap ... Xs what to do.

Answer 1

Obviously use gulp-filter