Check if is woocommerce page or not

is-woocommerce-page.php

/**
 * Is woocommerce page
 *
 * @param   string $page        ( 'cart' | 'checkout' | 'account' | 'endpoint' )
 * @param   string $endpoint    If $page == 'endpoint' and you want to check for specific endpoint
 * @return  boolean
 */
if( ! function_exists('is_woocommerce_page') ){
    function is_woocommerce_page( $page = '', $endpoint = '' ){
        if( ! $page ){
            return ( is_cart() || is_checkout() || is_account_page() || is_wc_endpoint_url() );
        }

        switch ( $page ) {
            case 'cart':
                return is_cart();
                break;

            case 'checkout':
                return is_checkout();
                break;

            case 'account':
                return is_account_page();
                break;

            case 'endpoint':
                if( $endpoint ) {
                    return is_wc_endpoint_url( $endpoint );
                }

                return is_wc_endpoint_url();
                break;
        }

        return false;
    }
}

Check if user is on one of woocommerce pages ( cart, checkout, my-account, ... )