react-promise-tracker/lib/trackPromise.js

Simple React Promise tracker Hook/HOC helper to add loading spinner indicators

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.trackPromise = exports.promiseCounterUpdateEventId = exports.manuallyResetPromiseCounter = exports.manuallyIncrementPromiseCounter = exports.manuallyDecrementPromiseCounter = exports.getCounter = exports.emitter = void 0;
var _tinyEmmiter = require("./tinyEmmiter");
var _constants = require("./constants");
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
var emitter = new _tinyEmmiter.Emitter();
exports.emitter = emitter;
var promiseCounterUpdateEventId = "promise-counter-update";
exports.promiseCounterUpdateEventId = promiseCounterUpdateEventId;
var counter = _defineProperty({}, _constants.defaultArea, 0);
var getCounter = function getCounter(area) {
  return counter[area];
};
exports.getCounter = getCounter;
var trackPromise = function trackPromise(promise, area) {
  area = area || _constants.defaultArea;
  incrementPromiseCounter(area);
  var onResolveHandler = function onResolveHandler() {
    return decrementPromiseCounter(area);
  };
  promise.then(onResolveHandler, onResolveHandler);
  return promise;
};
exports.trackPromise = trackPromise;
var incrementPromiseCounter = function incrementPromiseCounter(area) {
  incrementCounter(area);
  var promiseInProgress = anyPromiseInProgress(area);
  emitter.emit(promiseCounterUpdateEventId, promiseInProgress, area);
};
var incrementCounter = function incrementCounter(area) {
  if (Boolean(counter[area])) {
    counter[area]++;
  } else {
    counter[area] = 1;
  }
};
var anyPromiseInProgress = function anyPromiseInProgress(area) {
  return counter[area] > 0;
};
var decrementPromiseCounter = function decrementPromiseCounter(area) {
  counter[area] > 0 && decrementCounter(area);
  var promiseInProgress = anyPromiseInProgress(area);
  emitter.emit(promiseCounterUpdateEventId, promiseInProgress, area);
};
var decrementCounter = function decrementCounter(area) {
  counter[area]--;
};
var manuallyResetPromiseCounter = function manuallyResetPromiseCounter(area) {
  area = area || _constants.defaultArea;
  counter[area] = 0;
  emitter.emit(promiseCounterUpdateEventId, false, area);
};
exports.manuallyResetPromiseCounter = manuallyResetPromiseCounter;
var manuallyDecrementPromiseCounter = function manuallyDecrementPromiseCounter(area) {
  area = area || _constants.defaultArea;
  decrementPromiseCounter(area);
};
exports.manuallyDecrementPromiseCounter = manuallyDecrementPromiseCounter;
var manuallyIncrementPromiseCounter = function manuallyIncrementPromiseCounter(area) {
  area = area || _constants.defaultArea;
  incrementPromiseCounter(area);
};
// TODO: Enhancement we could catch here errors and throw an Event in case there's an HTTP Error
// then the consumer of this event can be listening and decide what to to in case of error
exports.manuallyIncrementPromiseCounter = manuallyIncrementPromiseCounter;