...
By SECTION_OVERLAY_ANCESTOR_LOCATOR = By.xpath("./ancestor::div[contains(@id, 'section-overlay-')][1]");
...

    private WebElement findUnblockedElement(By by) {
        WebElement element = driver.findElement(by);
        if (isBlockedByOverlay(element)) {
            throw new ElementNotInteractableException(String.format("Element [%s] is blocked by overlay", element.getAttribute("id")));
        } else {
            return element;
        }
    }

    private boolean isBlockedByOverlay(WebElement element) {
        List<WebElement> ancestors = element.findElements(SECTION_OVERLAY_ANCESTOR_LOCATOR);
        WebElement overlayAncestor = ancestors.get(0);
        String overlayClass = overlayAncestor.getAttribute("class");
        return !StringUtils.isBlank(overlayClass);
    }

var /*WebDriver*/ webdriver = require('selenium-webdriver');
var browser = new webdriver.Builder().forBrowser(webdriver.Browser.CHROME).build();
var By = webdriver.By;

/**
 * Find the given element if it is accessible to the user (it's visible, and there's no blocking overlay on top of it).
 * @param by locator to use to find the element
 */
function findUnblockedElement(/*By*/by) {
    let elementPromise = browser.findElement(by);
    return elementPromise.then(element => {
        let ancestorsPromise = element.findElements(By.xpath("./ancestor::div[contains(@id, 'section-overlay-')][1]"));
        return ancestorsPromise.then(function (ancestors) {
            return /*WebElement*/ancestors[0].getAttribute('class').then(className => {
                return new Promise(function (resolve, reject) {
                    if (className !== '') {
                        reject(new Error('Element ' + by + ' is blocked by overlay.'));
                    } else {
                        resolve(element);
                    }
                });
            })
        });
    });
}

findUnblockedButtonByText = function(text) {
    let xpath = "//button[text()='%s']".replace("%s", text);
    return findUnblockedElement(By.xpath(xpath));
};