respond-framework/dist/proxy/VersionNotifier.js

create as fast you think

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.VersionNotifier = exports.VNTop = exports.VNModule = void 0;
var _queueNotification = require("./helpers/queueNotification.js");
class VersionNotifier {
  version = highestVersion;
  parents = new Set();
  constructor(obj) {
    this.obj = obj;
    this.notify = this.notify.bind(this); // needs unique ref with `this` context to be passed as callback to children
  }
  notify(version = ++highestVersion, branch = this.branch) {
    if (this.version === version) return; // can happen if proxy exists in multiple places, in which case the version notification has already been sent to the top by the first reference
    this.version = version;
    this.parents.forEach(notify => notify(version, branch));
  }
}
exports.VersionNotifier = VersionNotifier;
class VNModule extends VersionNotifier {
  constructor(obj) {
    super(obj);
    this.branch = obj.respond.branch; // only modules have branches -- therefore the changed branched will "stick" and be passed to the top during upward notify recursion
  }
}
exports.VNModule = VNModule;
class VNTop extends VersionNotifier {
  constructor(obj) {
    super(obj);
    this.branch = obj.respond.branch;
    this.respond = obj.respond;
  }
  notify(version = ++highestVersion, branch = this.branch) {
    this.version = version;
    (0, _queueNotification.default)(branch, this.respond);
  }
}
exports.VNTop = VNTop;
let highestVersion = 0;