@salesforce/core/lib/config/lwwRegister.js

Core libraries to interact with SFDX projects, orgs, and APIs.

"use strict";
/*
 * Copyright (c) 2023, salesforce.com, inc.
 * All rights reserved.
 * Licensed under the BSD 3-Clause license.
 * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.LWWRegister = void 0;
const time_1 = require("../util/time");
/** a CRDT implementation.  Uses timestamps to resolve conflicts when updating the value (last write wins)
 * mostly based on https://jakelazaroff.com/words/an-interactive-intro-to-crdts/
 *
 * @param T the type of the value stored in the register
 */
class LWWRegister {
    state;
    constructor(state) {
        this.state = state;
    }
    get value() {
        return this.state.value;
    }
    get timestamp() {
        return this.state.timestamp;
    }
    set(value) {
        this.state = { timestamp: (0, time_1.nowBigInt)(), value };
    }
    merge(incoming) {
        // only update if the incoming timestamp is greater than the local timestamp
        if (incoming.timestamp > this.state.timestamp) {
            this.state = incoming;
        }
        return this.state;
    }
}
exports.LWWRegister = LWWRegister;
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