javascript - gulp.src from a separate file doesnt work -


i trying write gulpfile follows : 

var gulp = require('gulp'); // other dependencies go here ....  // source of files  var inputs = require('./asset_source.js');  // simple task gulp.task('css', function () {     gulp.src(inputs.css)     .pipe(debug())     .pipe(plumber())     .pipe(maps.init())     .pipe(concatcss('libs.css'))     .pipe(maps.write('../srcmaps'))     .pipe(plumber.stop())     .pipe(gulp.dest('assets/css')); });  // watcher gulp.task('watch', function () {     gulp.watch('./asset_source.js', ['css']); });  // default task gulp.task('default', ['browser-sync', 'watch']);

and source of assets (asset_source.js) file :

module.exports = {     css: [      'path/to/a/file.css',      'path/to/another/file.css',      .......      .......     ],     js: [      'path/to/a/file.js',      'path/to/another/file.js',      .......      .......     ] };

now run app typing gulp in console , starts in browser browsersync. have css,scss,js assets listed in asset_source.js file in same directory gulpfile.js. want achieve if append or remove value to/from either of arrays in asset_source.js, concerned task should run while gulp running. in case css should running on change asset_source.js updated content.

but instead doesnt so. if there change in asset_source file, gulp uses initial content , runs task. if run gulp css in separate terminal, works.

please me going wrong or if possible. thanks.


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