How can I use gulp to replace a string in a file?

Question

I am using gulp to uglify and make ready my javascript files for production. What I have is this code:

var concat = require(\'gulp-concat\');
var del = requi         


        

Answer 1

There I have a versioning specific example for your reference. let say you have version.ts file and it contains the version code inside it. You now can do as the follows:

gulp.task ('version_up', function () {
    gulp.src (["./version.ts"])
        .pipe (replace (/(\d+)\.(\d+)(?:\.(\d+))?(?:\-(\w+))?/, process.env.VERSION))
        .pipe (gulp.dest ('./'))
});

the above regex works for many situation on any conventional version formats.