From: Jérôme Benoit <jerome.benoit@sap.com>
Date: Sun, 21 Aug 2022 22:05:33 +0000 (+0200)
Subject: Implement singleton design pattern with strict null check
X-Git-Tag: v1.1.66~30
X-Git-Url: https://git.piment-noir.org/?a=commitdiff_plain;h=1ca780f9d385bcf96a016ab5ba57ca0f19c94b74;p=e-mobility-charging-stations-simulator.git

Implement singleton design pattern with strict null check

Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>
---

diff --git a/src/charging-station/AuthorizedTagsCache.ts b/src/charging-station/AuthorizedTagsCache.ts
index 4142ee25..d39fbee6 100644
--- a/src/charging-station/AuthorizedTagsCache.ts
+++ b/src/charging-station/AuthorizedTagsCache.ts
@@ -16,7 +16,7 @@ export default class AuthorizedTagsCache {
   }
 
   public static getInstance(): AuthorizedTagsCache {
-    if (!AuthorizedTagsCache.instance) {
+    if (AuthorizedTagsCache.instance === null) {
       AuthorizedTagsCache.instance = new AuthorizedTagsCache();
     }
     return AuthorizedTagsCache.instance;
diff --git a/src/charging-station/Bootstrap.ts b/src/charging-station/Bootstrap.ts
index 23307f4c..0fa2c88d 100644
--- a/src/charging-station/Bootstrap.ts
+++ b/src/charging-station/Bootstrap.ts
@@ -60,7 +60,7 @@ export default class Bootstrap {
   }
 
   public static getInstance(): Bootstrap {
-    if (!Bootstrap.instance) {
+    if (Bootstrap.instance === null) {
       Bootstrap.instance = new Bootstrap();
     }
     return Bootstrap.instance;
diff --git a/src/charging-station/SharedLRUCache.ts b/src/charging-station/SharedLRUCache.ts
index 697cf943..a40de802 100644
--- a/src/charging-station/SharedLRUCache.ts
+++ b/src/charging-station/SharedLRUCache.ts
@@ -20,7 +20,7 @@ export default class SharedLRUCache {
   }
 
   public static getInstance(): SharedLRUCache {
-    if (!SharedLRUCache.instance) {
+    if (SharedLRUCache.instance === null) {
       SharedLRUCache.instance = new SharedLRUCache();
     }
     return SharedLRUCache.instance;
diff --git a/src/charging-station/ocpp/OCPPIncomingRequestService.ts b/src/charging-station/ocpp/OCPPIncomingRequestService.ts
index 5be2629a..23d0ffdd 100644
--- a/src/charging-station/ocpp/OCPPIncomingRequestService.ts
+++ b/src/charging-station/ocpp/OCPPIncomingRequestService.ts
@@ -22,7 +22,7 @@ export default abstract class OCPPIncomingRequestService {
   }
 
   public static getInstance<T extends OCPPIncomingRequestService>(this: new () => T): T {
-    if (!OCPPIncomingRequestService.instance) {
+    if (OCPPIncomingRequestService.instance === null) {
       OCPPIncomingRequestService.instance = new this();
     }
     return OCPPIncomingRequestService.instance as T;
diff --git a/src/charging-station/ocpp/OCPPRequestService.ts b/src/charging-station/ocpp/OCPPRequestService.ts
index 1ae25a65..6f4e47be 100644
--- a/src/charging-station/ocpp/OCPPRequestService.ts
+++ b/src/charging-station/ocpp/OCPPRequestService.ts
@@ -45,7 +45,7 @@ export default abstract class OCPPRequestService {
     this: new (ocppResponseService: OCPPResponseService) => T,
     ocppResponseService: OCPPResponseService
   ): T {
-    if (!OCPPRequestService.instance) {
+    if (OCPPRequestService.instance === null) {
       OCPPRequestService.instance = new this(ocppResponseService);
     }
     return OCPPRequestService.instance as T;
diff --git a/src/charging-station/ocpp/OCPPResponseService.ts b/src/charging-station/ocpp/OCPPResponseService.ts
index eb49b752..624659ae 100644
--- a/src/charging-station/ocpp/OCPPResponseService.ts
+++ b/src/charging-station/ocpp/OCPPResponseService.ts
@@ -21,7 +21,7 @@ export default abstract class OCPPResponseService {
   }
 
   public static getInstance<T extends OCPPResponseService>(this: new () => T): T {
-    if (!OCPPResponseService.instance) {
+    if (OCPPResponseService.instance === null) {
       OCPPResponseService.instance = new this();
     }
     return OCPPResponseService.instance as T;