Setting up gulp-imagemin, how to remove re-optimization?

Question

Automation

gulp.task("images", function () {
    return gulp.src("img/**/*.{png,jpg,gif}")
        .pipe(imagemin([
            imagemin.optipng({
                optimizationlevel: 3
            }),
            imagemin.jpegtran({
                progressive: true
            })
        ]))
        .pipe(gulp.dest("img"));
})

Here is the optimization code, what needs to be added to it so that when the server is called again, it would look to see if there were any changes, and if not, then skip this step, otherwise it got tired of constantly waiting until it runs the pictures over again :) Google did not give an answer for some reason.

Answer 1

https://www.npmjs.com/package/gulp-newer
in the example is just the case with pictures