From c5d8d884b507005a78f9adaaf3c60574ae85bbd7 Mon Sep 17 00:00:00 2001
From: OJ Kwon <kwon.ohjoong@gmail.com>
Date: Tue, 15 Dec 2015 00:45:11 -0800
Subject: [PATCH] refactor(operators): expand usage of const over let for
 variables

---
 src/testing/ColdObservable.ts |  2 +-
 src/util/MapPolyfill.ts       | 14 +++++++-------
 src/util/tryCatch.ts          |  2 +-
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/testing/ColdObservable.ts b/src/testing/ColdObservable.ts
index c239c1f21c..58c1c1ee4d 100644
--- a/src/testing/ColdObservable.ts
+++ b/src/testing/ColdObservable.ts
@@ -29,7 +29,7 @@ export class ColdObservable<T> extends Observable<T> implements SubscriptionLogg
   scheduleMessages(subscriber) {
     const messagesLength = this.messages.length;
     for (let i = 0; i < messagesLength; i++) {
-      let message = this.messages[i];
+      const message = this.messages[i];
       subscriber.add(
         this.scheduler.schedule(({message, subscriber}) => { message.notification.observe(subscriber); },
           message.frame,
diff --git a/src/util/MapPolyfill.ts b/src/util/MapPolyfill.ts
index 713a1ddb9c..98aeed1eae 100644
--- a/src/util/MapPolyfill.ts
+++ b/src/util/MapPolyfill.ts
@@ -3,13 +3,13 @@ export class MapPolyfill {
   private _values = [];
   private _keys = [];
 
-  get(key) {
-    let i = this._keys.indexOf(key);
+  get(key): any {
+    const i = this._keys.indexOf(key);
     return i === -1 ? undefined : this._values[i];
   }
 
-  set(key, value) {
-    let i = this._keys.indexOf(key);
+  set(key, value): any {
+    const i = this._keys.indexOf(key);
     if (i === -1) {
       this._keys.push(key);
       this._values.push(value);
@@ -20,8 +20,8 @@ export class MapPolyfill {
     return this;
   }
 
-  delete(key) {
-    let i = this._keys.indexOf(key);
+  delete(key): boolean {
+    const i = this._keys.indexOf(key);
     if (i === -1) { return false; }
     this._values.splice(i, 1);
     this._keys.splice(i, 1);
@@ -29,7 +29,7 @@ export class MapPolyfill {
     return true;
   }
 
-  forEach(cb, thisArg) {
+  forEach(cb, thisArg): void {
     for (let i = 0; i < this.size; i++) {
       cb.call(thisArg, this._values[i], this._keys[i]);
     }
diff --git a/src/util/tryCatch.ts b/src/util/tryCatch.ts
index 89c2b1574b..1a68fef706 100644
--- a/src/util/tryCatch.ts
+++ b/src/util/tryCatch.ts
@@ -1,6 +1,6 @@
 import {errorObject} from './errorObject';
 
-let tryCatchTarget;
+let tryCatchTarget: Function;
 
 function tryCatcher(): any {
   try {