gulp-pure-cjs + gulp-uglify + gulp-sourcemaps fails

[QuentinRoy]

When gulp-pure-cjs is piped to gulp-uglify while source maps are being kept updated, it fails.

gulp.task('min', function(){
    return gulp.src([sources])
        .pipe(sourcemaps.init())
        .pipe(pure(config))
        .pipe(uglify())
        .pipe(sourcemaps.write('.')
        .pipe(gulp.dest('dist'));
});

It seems that uglify cannot find the source file to put in the source maps after pure-cjs...
The only way I found to successfully uglify the pure-cjs build is to insert an empty gulp-concat after it (but it adds an inexistant source to the source maps).

[richard-flosi]

this is probably related to the Beware notice in the README:
"pure-cjs always re-read files from disk, so if you load other plugin in pipeline that changes file content, this changes will be lost!"

It sounds like pure-cjs isn't reading or writing streams which is what gulp.pipe expects from my understanding, but I'm still pretty new to using gulp.