slimのビルドをgulpのslim pluginでやった場合のgulpfile

gulpfile.js

var gulp = require("gulp");
var slim = require("gulp-slim");

gulp.task('slim', function(){
  gulp.src("./*.slim")
    .pipe(slim({
      pretty: true
    }))
    .pipe(gulp.dest("./output/"));
});

gulp.task('watch', function() {
  gulp.watch('./*.slim', ['slim']);
});

gulp.task('default', ['watch']);