styleable.js

const styleable = (ParentComponent) => class extends ParentComponent {
    static displayName = `Styleable(${ParentComponent.displayName || ParentComponent.name})`

    render() {
        const originalElement = super.render()
        const className = `${originalElement.props.className} ${this.props.className}`
        const style = {...originalElement.props.style, ...this.props.style}
        const newProps = {...originalElement.props, className, style}

        return React.cloneElement(originalElement, newProps)
    }
}