@parity/light.js/lib/utils/operators/distinctValues.js

A high-level reactive JS library optimized for light clients

"use strict";
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
// This file is part of Parity.
//
// SPDX-License-Identifier: MIT
Object.defineProperty(exports, "__esModule", { value: true });
var bignumber_js_1 = require("bignumber.js");
var operators_1 = require("rxjs/operators");
var types_1 = require("@parity/api/lib/util/types");
/**
 * An intelligent distinctUntilChanged().
 *
 * @ignore
 */
exports.distinctValues = function () {
    return operators_1.distinctUntilChanged(function (x, y) {
        // If T == Block
        if (x &&
            y &&
            x.number &&
            y.number) {
            return x.number.eq(y.number);
        }
        // If T == BigNumber
        if (bignumber_js_1.default.isBigNumber(x) && bignumber_js_1.default.isBigNumber(y)) {
            return x.eq(y);
        }
        // If T == object
        if (types_1.isObject(x) && types_1.isObject(y)) {
            return JSON.stringify(x) === JSON.stringify(y); // TODO Do a deep equal instead
        }
        // Other cases
        return x === y;
    });
};