annotate utils

Author: Salakar

lib/utils/index.js

@@ -18,7 +18,7 @@ const _handler = (resolve, reject, err, resp) => {
  * @param object
  * @returns {{}}
  */
-export function reverseKeyValues(object) {
+export function reverseKeyValues(object: Object): Object {
   const output = {};
   for (const key in object) {
     output[object[key]] = key;
@@ -29,15 +29,15 @@ export function reverseKeyValues(object) {
 /**
  * No operation func
  */
-export function noop() {
+export function noop(): void {
 }
 
 /**
  * Wraps a native module method to support promises.
  * @param fn
  * @param NativeModule
  */
-export function promisify(fn, NativeModule) {
+export function promisify(fn: Function, NativeModule: Object): Function<Promise> {
   return (...args) => {
     return new Promise((resolve, reject) => {
       const _fn = typeof fn === 'function' ? fn : NativeModule[fn];
@@ -56,7 +56,7 @@ export function promisify(fn, NativeModule) {
  * @param callback
  * @private
  */
-function _delayChunk(collection, chunkSize, operation, callback) {
+function _delayChunk(collection, chunkSize, operation, callback): void {
   const length = collection.length;
   const iterations = Math.ceil(length / chunkSize);
 
@@ -84,7 +84,7 @@ function _delayChunk(collection, chunkSize, operation, callback) {
  * @param iterator
  * @param cb
  */
-export function each(array, chunkSize, iterator, cb) {
+export function each(array: Array, chunkSize?: number, iterator: Function, cb: Function): void {
   if (typeof chunkSize === 'function') {
     cb = iterator;
     iterator = chunkSize;
@@ -106,7 +106,7 @@ export function each(array, chunkSize, iterator, cb) {
  * @param cb
  * @returns {*}
  */
-export function map(array, chunkSize, iterator, cb) {
+export function map(array: Array, chunkSize?: number, iterator: Function, cb: Function): void {
   if (typeof chunkSize === 'function') {
     cb = iterator;
     iterator = chunkSize;
@@ -137,7 +137,7 @@ const lastRandChars = [];
  * @param serverTimeOffset - pass in server time offset from native side
  * @returns {string}
  */
-export function generatePushID(serverTimeOffset = 0) {
+export function generatePushID(serverTimeOffset?: number = 0): string {
   const timeStampChars = new Array(8);
   let now = new Date().getTime() + serverTimeOffset;
   const duplicateTime = (now === lastPushTime);