aurelia-testing/dist/amd/wait.js

var __assign = (this && this.__assign) || Object.assign || function(t) {
    for (var s, i = 1, n = arguments.length; i < n; i++) {
        s = arguments[i];
        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
            t[p] = s[p];
    }
    return t;
};
define(["require", "exports"], function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    /**
     * Generic function to wait for something to happen. Uses polling
     * @param getter: a getter function that returns anything else than `null` or an
     *                empty array or an empty jQuery object when the
     *                condition is met
     * @param options: lookup options, defaults to
     *                 `{present: true, interval: 50, timeout: 5000}`
     */
    function waitFor(getter, options) {
        if (options === void 0) { options = { present: true, interval: 50, timeout: 5000 }; }
        // prevents infinite recursion if the request times out
        var timedOut = false;
        options = __assign({ present: true, interval: 50, timeout: 5000 }, options);
        function wait() {
            var element = getter();
            // boolean is needed here, hence the length > 0
            var found = element !== null && (!(element instanceof NodeList) &&
                !element.jquery || element.length > 0);
            if (!options.present === !found || timedOut) {
                return Promise.resolve(element);
            }
            return new Promise(function (rs) { return setTimeout(rs, options.interval); }).then(wait);
        }
        return Promise.race([
            new Promise(function (_, rj) { return setTimeout(function () {
                timedOut = true;
                rj(new Error(options.present ? 'Element not found' : 'Element not removed'));
            }, options.timeout); }),
            wait()
        ]);
    }
    exports.waitFor = waitFor;
    function waitForDocumentElement(selector, options) {
        return waitFor(function () { return document.querySelector(selector); }, options);
    }
    exports.waitForDocumentElement = waitForDocumentElement;
    function waitForDocumentElements(selector, options) {
        return waitFor(function () { return document.querySelectorAll(selector); }, options);
    }
    exports.waitForDocumentElements = waitForDocumentElements;
});