Refactor constructor's "this" function statements into class methods Follow

How to convert this:

class MyClass {
    constructor() {
        this.method = ( x, y ) => {
            if ( x === 'value' ) {
                return y;
            }
        };

        this.method('value', 1);
    }
}

Into this:

class MyClass {
    constructor() {
        this.method('value', 1);
    }

    method( x, y ) {
        if ( x === 'value' ) {
            return y;
        }
    };
}

I have tons of legacy code and it would be very convinient if there is any possibility to refactor this cases automatically.