TueriImgCalculate.js

class Img extends React.Component {

    constructor(props) {
        super(props)
        this.state = {
            width: 0
        }
        this.imgRef = React.createRef()
    }

    componentDidMount() {
        const width = this.imgRef.current.clientWidth
        this.setState({
            width
        })
    }

    render() {

        // Destructure props and state
        const { src, alt, options = {}, ext = 'jpg' } = this.props
        const { width } = this.state

        // Create an empty query string
        let queryString = ''        

        // If width is specified, otherwise use auto-detected width
        options['w'] = options['w'] || width

        // Loop through option object and build queryString
        Object.keys(options).map((option, i) => {
            return queryString +=  `${i < 1 ? '?' : '&'}${option}=${options[option]}`
        })

        return(
            <figure ref={this.imgRef}>
                { 
                    // If the container width has been set, display the image else null
                    width > 0 ? (
                        <img
                            src={`https://cdn.tueri.io/${ src }/${ kebabCase(alt) }.${ ext }${ queryString }`}
                            alt={ alt }
                        />
                    ) : null 
                }
            </figure>
        )

    }
}

export default Img