@civet/core/lib/AbortSignal.js

Civet

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;
var _Notifier = _interopRequireDefault(require("./Notifier"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
var AbortSignal = /*#__PURE__*/_createClass(function AbortSignal() {
  var _this = this;
  _classCallCheck(this, AbortSignal);
  _defineProperty(this, "listen", function (cb) {
    if (_this.locked) return function () {};
    var alreadySubscribed = _this.notifier.isSubscribed(cb);
    var unsubscribe = _this.notifier.subscribe(cb);
    if (_this.aborted && !alreadySubscribed) cb();
    return unsubscribe;
  });
  _defineProperty(this, "abort", function () {
    if (_this.locked) return;
    _this.lock();
    Object.defineProperty(_this, 'aborted', {
      value: true,
      enumerable: true,
      writable: false,
      configurable: false
    });
    _this.notifier.trigger();
  });
  _defineProperty(this, "lock", function () {
    if (_this.locked) return;
    Object.defineProperty(_this, 'locked', {
      value: true,
      enumerable: true,
      writable: false,
      configurable: false
    });
  });
  _defineProperty(this, "proxy", function () {
    var s = _this;
    return {
      listen: function listen(cb) {
        return s.listen(cb);
      },
      get locked() {
        return s.locked;
      },
      get aborted() {
        return s.locked;
      }
    };
  });
  this.notifier = new _Notifier["default"]();
  Object.defineProperties(this, {
    locked: {
      value: false,
      enumerable: true,
      writable: false,
      configurable: true
    },
    aborted: {
      value: false,
      enumerable: true,
      writable: false,
      configurable: true
    }
  });
});
var _default = exports["default"] = AbortSignal;