How to call a function which is outside the component in script function of component.

Please help in solving the below issue.
How to call a function which is outside the component in script function of component.
ex:
demo.myFunction function should be called in component script, but script is not able to recognize demo variable. Where as demo.myFunction can be called in init function.


grapesjs.plugins.add('my-plugin', function(editor, options) {

    var demo = {
            this.myFunction(id){
            alert(this.id);
        }
    }


    var domComponents = editor.BlockManager;
    domComponents.add('my-block', {
        id: 'myComp',
        label: 'Custom',
        category: 'plugin',
        attributes: {
            class: 'fa fa-square-o'
        },
        style: {
            padding: '100px'
        },
        content: {
            type: 'myComp'
        }
    });


    var comps = editor.DomComponents;


    var defaultType = comps.getType('default');
    var defaultModel = defaultType.model;
    var defaultView = defaultType.view;

    comps.addType('myComp', {
        model: defaultModel.extend({
                init(){
                    // working fine
                    demo.myFunction(this.id);
                },

                defaults: Object.assign({}, defaultModel.prototype.defaults, {
                    removable: true,
                    draggable: true,
                    style: {
                        // 'background-color':'yellow',
                    },
                    editable: true,
                    copyable: true,
                    badgable: true,
                    highlightable: true,
                    resizable: true,
                    droppable: true,
                    content: `<svg style="width:90%;">
                    </svg>`,
                    script: function() {
                        console.log(this);
                        //not working
                        demo.myFunction(this.id);
                    },

                })
            },
        // Define the View
        view: defaultType.view.extend({
            render: function() {
                defaultType.view.prototype.render.apply(this, arguments);
                return this;
            },
        }),
    });
})


Thank you.