Use function Javascript on TWIG page using WebPack Encore and Symfony 4

i'm using Symfony 4.2 and i use last WebPack Encore.

I have issu because i need to use function from my javascript on my twig template, but this never work.

I always have same problem:

Uncaught ReferenceError: consoleText is not defined at (index):17

assets/js/app.js:

require('../css/app.css');
const $ = require('jquery');
global.$ = global.jQuery = $;

assets/js/myFunctions.js

const consoleText = function (log = "Auncun log") {
console.log(log);
};

module.exports = {
    consoleText: consoleText
};

webpack.config.js

var Encore = require('@symfony/webpack-encore');

Encore
    .setOutputPath('public/build/')
    .setPublicPath('/build')
    .addEntry('app', './assets/js/app.js')
    .enableSingleRuntimeChunk()
    .cleanupOutputBeforeBuild()
    .enableBuildNotifications()
    .enableSourceMaps(!Encore.isProduction())
    .autoProvidejQuery()
;

module.exports = Encore.getWebpackConfig();

I need to get access to my function consoleText() outside my file.

If i want to get access on javascript file, this work. Exemple: In my app.js i can add:

let myTest = require('./myFunctions');
myTest.consoleText('Blablabla');

this work fine after compilation.

BUT i need to get access this function on my twig template (home.html.twig)

In my base.html.twig i called my script file with:

{% block javascripts %}
    {{ encore_entry_script_tags('app') }}


    // NEED HERE USE MY FUNCTION LIKE:
    {{ encore_entry_script_tags('myFunctions') }}
    <script>
        consoleText("This don't work");
    </script>
{% endblock %}

my consoleTest() function don't work and i don't understand why. I try to use Module.export, and tried to use lot of thinks but i don't know why i can't call my function on my twig template, so i need your help.

Thank you