react-promise-tracker
Version:
Simple React Promise tracker Hook/HOC helper to add loading spinner indicators
81 lines (80 loc) • 4.19 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Emitter = void 0;
function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e2) { throw _e2; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e3) { didErr = true; err = _e3; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
// Based on:
// https://github.com/scottcorgan/tiny-emitter
// class based
var Emitter = /*#__PURE__*/function () {
function Emitter() {
_classCallCheck(this, Emitter);
}
_createClass(Emitter, [{
key: "emit",
value: function emit(event) {
if (!event) return this;
for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
args[_key - 1] = arguments[_key];
}
var _iterator = _createForOfIteratorHelper(this._e(event)),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var fn = _step.value;
fn.apply(fn.ctx, [].concat(args));
if (fn.off_event == true) this.off(event, fn);
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
return this;
}
}, {
key: "on",
value: function on(event, fn, ctx) {
if (!event) return this;
fn.ctx = ctx;
this._e(event).push(fn);
return this;
}
}, {
key: "once",
value: function once(event, fn, ctx) {
if (!event) return this;
fn.ctx = ctx;
fn.off_event = true;
return this.on(event, fn);
}
}, {
key: "off",
value: function off(event, fn) {
if (!event) return this;
if (!this[event]) return this;
var e = this._e(event);
if (!fn) {
delete this[event];
return this;
}
this[event] = e.filter(function (f) {
return f != fn;
});
return this;
}
}, {
key: "_e",
value: function _e(e) {
return this[e] || (this[e] = []);
}
}]);
return Emitter;
}();
exports.Emitter = Emitter;