gulp-concat
                                
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                        Encoding problem on Windows
Hi I have a concat task that concats a series of javascript file defined on an arrray CONFIG.JS_FILES defined like this:
'use strict';
var gulp = require('gulp');
var concat = require('gulp-concat');
var CONFIG = require('../config.js'); 
 
gulp.task('app-js', function() {
  return gulp.src(CONFIG.JS_FILES,{allowEmpty: true })
    .pipe(concat('app.js'))
    .pipe(gulp.dest(CONFIG.PATHS.destinationdir+'Assets/Js/'));
});
gulp.task('app--home-js', function() {
  return gulp.src(CONFIG.JS_HOME_FILES,{allowEmpty: true })
    .pipe(concat('app--home.js'))
    .pipe(gulp.dest(CONFIG.PATHS.destinationdir+'Assets/Js/'));
});
gulp.task('concat', gulp.series('app-js', 'app--home-js'));
The problem: some files in the array are picked up from the node_modules folder and are saved when installing them via npm i as ANSI Western European 1252  (Windows environment) while others are UTF-8 NO-BOM;
Thus the resulting file is saved as ANSI Western European 1252, so for example letters like "à" (224) become "Ã" (160)
I can't figure out how to solve this problem :(