import { v4 as uuid } from 'uuid';
export default class Utils {
+ static logPrefix(prefixString = ''): string {
+ return new Date().toLocaleString() + prefixString;
+ }
+
static generateUUID(): string {
return uuid();
}
}
}
- static convertToDate(value): Date {
+ static convertToDate(value: any): Date {
// Check
if (!value) {
return value;
return value;
}
- static convertToInt(value): number {
+ static convertToInt(value: any): number {
let changedValue = value;
if (!value) {
return 0;
return changedValue;
}
- static convertToFloat(value): number {
+ static convertToFloat(value: any): number {
let changedValue = value;
if (!value) {
return 0;
return changedValue;
}
- static convertToBoolean(value): boolean {
+ static convertToBoolean(value: any): boolean {
let result = false;
// Check boolean
if (value) {
return Math.floor(Math.random() * max + 1);
}
- static roundTo(number: number, scale: number): number {
+ static roundTo(numberValue: number, scale: number): number {
const roundPower = Math.pow(10, scale);
- return Math.round(number * roundPower) / roundPower;
+ return Math.round(numberValue * roundPower) / roundPower;
}
- static truncTo(number: number, scale: number): number {
+ static truncTo(numberValue: number, scale: number): number {
const truncPower = Math.pow(10, scale);
- return Math.trunc(number * truncPower) / truncPower;
+ return Math.trunc(numberValue * truncPower) / truncPower;
}
static getRandomFloatRounded(max: number, min = 0, scale = 2): number {
return Utils.roundTo(Utils.getRandomFloat(max), scale);
}
- static logPrefix(prefixString = ''): string {
- const date = new Date();
- return date.toLocaleString() + prefixString;
+ static getRandomFloatFluctuatedRounded(staticValue: number, fluctuationPercent: number, scale = 2): number {
+ if (fluctuationPercent === 0) {
+ return Utils.roundTo(staticValue, scale);
+ }
+ const fluctuationRatio = fluctuationPercent / 100;
+ return Utils.getRandomFloatRounded(staticValue * (1 + fluctuationRatio), staticValue * (1 - fluctuationRatio), scale);
}
static cloneObject<T>(object: T): T {
return JSON.parse(JSON.stringify(object)) as T;
}
- static isIterable(obj): boolean {
+ static isIterable<T>(obj: T): boolean {
if (obj) {
return typeof obj[Symbol.iterator] === 'function';
}
return false;
}
- static isEmptyJSon(document): boolean {
+ static isEmptyJSon(document: any): boolean {
// Empty?
if (!document) {
return true;
return Object.keys(document).length === 0;
}
- static isString(value): boolean {
+ static isString(value: any): boolean {
return typeof value === 'string';
}
- static isUndefined(value): boolean {
+ static isUndefined(value: any): boolean {
return typeof value === 'undefined';
}
- static isNullOrUndefined(value): boolean {
+ static isNullOrUndefined(value: any): boolean {
// eslint-disable-next-line no-eq-null, eqeqeq
if (value == null) {
return true;
return false;
}
- static isEmptyArray(object): boolean {
+ static isEmptyArray(object: any): boolean {
if (!object) {
return true;
}
return true;
}
- static isEmptyObject(obj): boolean {
+ static isEmptyObject(obj: any): boolean {
return !Object.keys(obj).length;
}
static insertAt = (str: string, subStr: string, pos: number): string => `${str.slice(0, pos)}${subStr}${str.slice(pos)}`;
/**
- * @param {number} [retryNumber=0]
- * @returns {number} - delay in milliseconds
+ * @param {number} [retryNumber=0]
+ * @returns {number} delay in milliseconds
*/
static exponentialDelay(retryNumber = 0): number {
const delay = Math.pow(2, retryNumber) * 100;
return delay + randomSum;
}
+ /**
+ * Convert websocket error code to human readable string message
+ *
+ * @param {number} code websocket error code
+ * @returns {string} human readable string message
+ */
static getWebSocketCloseEventStatusString(code: number): string {
if (code >= 0 && code <= 999) {
return '(Unused)';