X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Futils%2FUtils.ts;h=226f54c4df5abfa54386737d2e0ffe0ed7e40ac1;hb=1b0147cae119f5b519cffd8cdf2a733a3df20b11;hp=d6fe05d42c7c282d3fe5e2dcafa18eff5cb694e1;hpb=fd1ee77ce04cf81c52a5e66408b148a9847eb4ec;p=e-mobility-charging-stations-simulator.git

diff --git a/src/utils/Utils.ts b/src/utils/Utils.ts
index d6fe05d4..226f54c4 100644
--- a/src/utils/Utils.ts
+++ b/src/utils/Utils.ts
@@ -17,7 +17,7 @@ export default class Utils {
     return new Date(milliSeconds).toISOString().substr(11, 8);
   }
 
-  static removeExtraEmptyLines(tab): void {
+  static removeExtraEmptyLines(tab: string[]): void {
     // Start from the end
     for (let i = tab.length - 1; i > 0; i--) {
       // Two consecutive empty lines?
@@ -102,7 +102,13 @@ export default class Utils {
   }
 
   static roundTo(number: number, scale: number): number {
-    return Utils.convertToFloat(number.toFixed(scale));
+    const roundPower = Math.pow(10, scale);
+    return Math.round(number * roundPower) / roundPower;
+  }
+
+  static truncTo(number: number, scale: number): number {
+    const truncPower = Math.pow(10, scale);
+    return Math.trunc(number * truncPower) / truncPower;
   }
 
   static getRandomFloatRounded(max: number, min = 0, scale = 2): number {
@@ -117,12 +123,8 @@ export default class Utils {
     return date.toLocaleString() + prefixString;
   }
 
-  static objectHasOwnProperty(object, property): boolean {
-    return Object.prototype.hasOwnProperty.call(object, property);
-  }
-
-  static cloneObject(object) {
-    return JSON.parse(JSON.stringify(object));
+  static cloneObject<T>(object: T): T {
+    return JSON.parse(JSON.stringify(object)) as T;
   }
 
   static isIterable(obj): boolean {
@@ -176,4 +178,14 @@ export default class Utils {
   }
 
   static insertAt = (str: string, subStr: string, pos: number): string => `${str.slice(0, pos)}${subStr}${str.slice(pos)}`;
+
+  /**
+   * @param  {number} [retryNumber=0]
+   * @return {number} - delay in milliseconds
+   */
+  static exponentialDelay(retryNumber = 0): number {
+    const delay = Math.pow(2, retryNumber) * 100;
+    const randomSum = delay * 0.2 * Math.random(); // 0-20% of the delay
+    return delay + randomSum;
+  }
 }