What to pass instead of 'this' in React function components

I have a task to rewrite class component to function one in React. Here's the method that bothers me

    openDictionary = async () => {
        const {
            special,
            sysColumnName,
            label,
            listLabel,
            sysColumnId,
            columnId,
        } = this.model;
        const {
            match,
            location,
            listValue,
        } = this.props;
        const width = window.screen.width * .7;
        const height = window.screen.height * .7;
        const top = 0;
        const left = 0;
        window.editReferenceField = this; // This line!
        ...
    };

The line I marked as'This line!' sets to a global window object's field editReferenceField a class instance, which is a component itself. Logging it into the console gives me a real instance with all its methods etc.

The project I work on is quite big, and there're several places I could find where the window.editReferenceField is used to access the component's methods (and there're also many places which I couldn't find, I'm positive with that, because the app is very dynamic and allows user to add logic via scripts).

Is there a way to do something similar in the function components? Unfortunately, I can't know for sure which methods/fields will be accessed, so I can't just assign this editReferenceField to an object with chosen methods, I need to pass the whole thing.

1. Anyway you need to find and note all the places where is editReferenceField used. Because you need to test all these places later;
2. Then check and note all methods editReferenceField.???;
3. Create the new functional component below and export all the props from p.2 window.editReferenceField = { someFunc: theFunc, otherFunc: theOtherFunc };
4. One by one replace and test all components from p.1. If something wrong, use the class component to compare and note the difference, resolve them;
5. Finally test all the places from p.1;
6. Remove class component.

If it's impossible, then just don't touch it for now.