I try to create my own Component and reuse it.
So I created these files:

> THEME = app\design\frontend\company\fresh

### Component File:

**THEME\web\js\elements\custom\input_number.js**

    define([
      "jquery",
      "uiComponent"
    ], 
    function($, Component) {
      "use strict";
    
        return Component.extend({
    		
            initialize: function () {
                return this._super();
            },
    		
    		test: function()
    		{
    			console.log("test");
    		}
    	});
    });

### requirejs-config.js:

**THEME\requirejs-config.js**

    var config = {
        paths: {
    		inputNumber: 'js/elements/custom/input_number'
    	},
    };


# Using the new component:

**THEME\Magento_Checkout\web\js\view\minicart.js**

I copied the file from vendor into my theme so that I can make changes. Now I try to use my component and call my **test** method:

    define([
        'uiComponent',
        'Magento_Customer/js/customer-data',
        'jquery',
        'ko',
        'underscore',
        'sidebar',
        'mage/translate',
        'mage/dropdown',
    	'inputNumber'
    ], function (Component, customerData, $, ko, _, inputNumber) {
        'use strict';

        inputNumber.test();    // `[ERROR] Failed to load the "Magento_Checkout/js/view/minicart" component.`

        ...

But now I get this in the console `[ERROR] Failed to load the "Magento_Checkout/js/view/minicart" component.`


I also tried to call the method inside of the method `initSidebar` but then I get **Uncaught TypeError: inputNumber.test is not a function**    

**THEME\Magento_Checkout\web\js\view\minicart.js:**

    define([
        'uiComponent',
        'Magento_Customer/js/customer-data',
        'jquery',
        'ko',
        'underscore',
    	'inputNumber',
        'sidebar',
        'mage/translate',
        'mage/dropdown'
    ], function (Component, customerData, $, ko, _, inputNumber) {
        'use strict';
    	
        var sidebarInitialized = false,
            addToCartCalls = 0,
            miniCart;
    
        miniCart = $("#minicart");
    
        function initSidebar()
    	{
    		inputNumber.test();  // Uncaught TypeError: inputNumber.test is not a function
    
            ...