gulp-changed-in-place plug-in is used to track / monitor the changed files and detects if the files in the stream have changed or not.
gulp-changed-in-place
gulp-changed checks against build files like ES5 files generated by Babel.js from the source ES6 files.
gulp-changed
gulp-changed-in-place monitors source files, ES6 files
Installation:
$ npm install --save-dev gulp-changed-in-place
Benefits: Allows to apply source formatting or linting only to changed files.