fix: use static this context

[e-mobility-charging-stations-simulator.git] / src / utils / Utils.ts

diff --git a/src/utils/Utils.ts b/src/utils/Utils.ts
index b619144bd5beab7045bb0ff2deae16e5b141e106..58e9094c7a601bcd587cf59e6fd79b32a8823b95 100644 (file)
--- a/src/utils/Utils.ts
+++ b/src/utils/Utils.ts
@@ -70,23 +70,20 @@ export const isValidTime = (date: unknown): boolean => {
   return false;
 };
 
-export const convertToDate = (
-  value: Date | string | number | null | undefined,
-): Date | null | undefined => {
+export const convertToDate = (value: Date | string | number | undefined): Date | undefined => {
   if (isNullOrUndefined(value)) {
-    return value as null | undefined;
+    return value as undefined;
   }
   if (isDate(value)) {
     return value as Date;
   }
   if (isString(value) || typeof value === 'number') {
-    value = new Date(value as string | number);
-    if (isNaN(value.getTime())) {
-      throw new Error(`Cannot convert to date: ${String(value)}`);
+    const valueToDate = new Date(value as string | number);
+    if (isNaN(valueToDate.getTime())) {
+      throw new Error(`Cannot convert to date: '${value as string | number}'`);
     }
-    return value;
+    return valueToDate;
   }
-  return null;
 };
 
 export const convertToInt = (value: unknown): number => {
@@ -104,7 +101,7 @@ export const convertToInt = (value: unknown): number => {
     changedValue = parseInt(value as string);
   }
   if (isNaN(changedValue)) {
-    throw new Error(`Cannot convert to integer: ${String(value)}`);
+    throw new Error(`Cannot convert to integer: '${String(value)}'`);
   }
   return changedValue;
 };
@@ -118,7 +115,7 @@ export const convertToFloat = (value: unknown): number => {
     changedValue = parseFloat(value as string);
   }
   if (isNaN(changedValue)) {
-    throw new Error(`Cannot convert to float: ${String(value)}`);
+    throw new Error(`Cannot convert to float: '${String(value)}'`);
   }
   return changedValue;
 };
@@ -283,12 +280,12 @@ export const insertAt = (str: string, subStr: string, pos: number): string =>
  * Computes the retry delay in milliseconds using an exponential backoff algorithm.
  *
  * @param retryNumber - the number of retries that have already been attempted
- * @param maxDelayRatio - the maximum ratio of the delay that can be randomized
+ * @param delayFactor - the base delay factor in milliseconds
  * @returns delay in milliseconds
  */
-export const exponentialDelay = (retryNumber = 0, maxDelayRatio = 0.2): number => {
-  const delay = Math.pow(2, retryNumber) * 100;
-  const randomSum = delay * maxDelayRatio * secureRandom(); // 0-(maxDelayRatio*100)% of the delay
+export const exponentialDelay = (retryNumber = 0, delayFactor = 100): number => {
+  const delay = Math.pow(2, retryNumber) * delayFactor;
+  const randomSum = delay * 0.2 * secureRandom(); // 0-20% of the delay
   return delay + randomSum;
 };
 
@@ -385,3 +382,18 @@ export const isArraySorted = <T>(array: T[], compareFn: (a: T, b: T) => number):
   }
   return true;
 };
+
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export const once = <T, A extends any[], R>(
+  fn: (...args: A) => R,
+  context: T,
+): ((...args: A) => R) => {
+  let result: R;
+  return (...args: A) => {
+    if (fn) {
+      result = fn.apply<T, A, R>(context, args);
+      (fn as unknown as undefined) = (context as unknown as undefined) = undefined;
+    }
+    return result;
+  };
+};