@jameshclrk/rxdb-hooks/dist/helpers.js

React hooks for integrating with RxDB

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isRxQuery = exports.isObject = exports.getCancelablePromise = void 0;
/**
 * Makes promise cancelable.
 * Wraps original promise in an object that exposes said promise
 * and also exposes a cancel() method for canceling the promise.
 * Canceling the promise will prevent it from resolving/rejecting once the
 * the underlying promise resolves/reject.
 */
var getCancelablePromise = function (promise) {
    var hasCanceled = false;
    var wrappedPromise = new Promise(function (resolve, reject) {
        promise.then(function (val) {
            if (!hasCanceled) {
                resolve(val);
            }
        }, function (error) {
            if (!hasCanceled) {
                reject(error);
            }
        });
    });
    return [
        wrappedPromise,
        function () {
            hasCanceled = true;
        },
    ];
};
exports.getCancelablePromise = getCancelablePromise;
var isObject = function (val) {
    return typeof val === 'object' && val !== null;
};
exports.isObject = isObject;
var isRxQuery = function (val) {
    return ((0, exports.isObject)(val) &&
        'skip' in val &&
        'limit' in val &&
        '$' in val &&
        (0, exports.isObject)(val.$) &&
        'subscribe' in val.$ &&
        typeof val.$.subscribe === 'function');
};
exports.isRxQuery = isRxQuery;