-import Configuration from './Configuration';
-import { WebSocketCloseEventStatusString } from '../types/WebSocket';
-import { WorkerProcessType } from '../types/Worker';
import crypto from 'crypto';
-import { v4 as uuid } from 'uuid';
+
+import { WebSocketCloseEventStatusString } from '../types/WebSocket';
export default class Utils {
+ private constructor() {
+ // This is intentional
+ }
+
public static logPrefix(prefixString = ''): string {
return new Date().toLocaleString() + prefixString;
}
public static generateUUID(): string {
- return uuid();
+ return crypto.randomUUID();
+ }
+
+ public static validateUUID(uuid: string): boolean {
+ return /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/.test(
+ uuid
+ );
}
public static async sleep(milliSeconds: number): Promise<NodeJS.Timeout> {
- return new Promise((resolve) => setTimeout(resolve, milliSeconds));
+ return new Promise((resolve) => setTimeout(resolve as () => void, milliSeconds));
}
public static formatDurationMilliSeconds(duration: number): string {
duration = Utils.convertToInt(duration);
const hours = Math.floor(duration / (3600 * 1000));
- const minutes = Math.floor((duration / 1000 - (hours * 3600)) / 60);
- const seconds = duration / 1000 - (hours * 3600) - (minutes * 60);
+ const minutes = Math.floor((duration / 1000 - hours * 3600) / 60);
+ const seconds = duration / 1000 - hours * 3600 - minutes * 60;
let hoursStr = hours.toString();
let minutesStr = minutes.toString();
let secondsStr = seconds.toString();
result = value;
} else {
// Convert
- result = (value === 'true');
+ result = value === 'true';
}
}
return result;
}
- public static getRandomFloat(max: number, min = 0, negative = false): number {
- if (max < min || min < 0 || max < 0) {
+ public static getRandomFloat(max = Number.MAX_VALUE, min = 0, negative = false): number {
+ if (max < min || max < 0 || min < 0) {
throw new RangeError('Invalid interval');
}
const randomPositiveFloat = crypto.randomBytes(4).readUInt32LE() / 0xffffffff;
- const sign = (negative && randomPositiveFloat < 0.5) ? -1 : 1;
+ const sign = negative && randomPositiveFloat < 0.5 ? -1 : 1;
return sign * (randomPositiveFloat * (max - min) + min);
}
- public static getRandomInteger(max: number, min = 0): number {
- if (max < 0) {
+ public static getRandomInteger(max = Number.MAX_SAFE_INTEGER, min = 0): number {
+ if (max < min || max < 0 || min < 0) {
throw new RangeError('Invalid interval');
}
max = Math.floor(max);
- if (min) {
- if (max < min || min < 0) {
- throw new RangeError('Invalid interval');
- }
+ if (!Utils.isNullOrUndefined(min) && min !== 0) {
min = Math.ceil(min);
return Math.floor(Utils.secureRandom() * (max - min + 1)) + min;
}
return Math.trunc(numberValue * truncPower) / truncPower;
}
- public static getRandomFloatRounded(max: number, min = 0, scale = 2): number {
+ public static getRandomFloatRounded(max = Number.MAX_VALUE, min = 0, scale = 2): number {
if (min) {
return Utils.roundTo(Utils.getRandomFloat(max, min), scale);
}
return Utils.roundTo(Utils.getRandomFloat(max), scale);
}
- public static getRandomFloatFluctuatedRounded(staticValue: number, fluctuationPercent: number, scale = 2): number {
+ public 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);
+ return Utils.getRandomFloatRounded(
+ staticValue * (1 + fluctuationRatio),
+ staticValue * (1 - fluctuationRatio),
+ scale
+ );
}
public static cloneObject<T>(object: T): T {
}
public static isIterable<T>(obj: T): boolean {
- if (obj) {
- return typeof obj[Symbol.iterator] === 'function';
- }
- return false;
+ return obj ? typeof obj[Symbol.iterator] === 'function' : false;
}
public static isString(value: unknown): boolean {
return typeof value === 'string';
}
+ public static isEmptyString(value: unknown): boolean {
+ return Utils.isString(value) && (value as string).trim().length === 0;
+ }
+
public static isUndefined(value: unknown): boolean {
return typeof value === 'undefined';
}
public static isNullOrUndefined(value: unknown): boolean {
- // eslint-disable-next-line no-eq-null, eqeqeq
- if (value == null) {
- return true;
- }
- return false;
+ // eslint-disable-next-line eqeqeq, no-eq-null
+ return value == null ? true : false;
}
public static isEmptyArray(object: unknown): boolean {
- if (!object) {
- return true;
+ if (!Array.isArray(object)) {
+ return false;
}
- if (Array.isArray(object) && object.length > 0) {
+ if ((object as unknown[]).length > 0) {
return false;
}
return true;
}
- public static isEmptyObject(obj: Record<string, unknown>): boolean {
- return !Object.keys(obj).length;
+ public static isEmptyObject(obj: object): boolean {
+ if (obj?.constructor !== Object) {
+ return false;
+ }
+ // Iterates over the keys of an object, if
+ // any exist, return false.
+ for (const _ in obj) {
+ return false;
+ }
+ return true;
}
- public static insertAt = (str: string, subStr: string, pos: number): string => `${str.slice(0, pos)}${subStr}${str.slice(pos)}`;
+ public static insertAt = (str: string, subStr: string, pos: number): string =>
+ `${str.slice(0, pos)}${subStr}${str.slice(pos)}`;
/**
* @param [retryNumber=0]
return delay + randomSum;
}
+ public static async promiseWithTimeout<T>(
+ promise: Promise<T>,
+ timeoutMs: number,
+ timeoutError: Error,
+ timeoutCallback: () => void = () => {
+ /* This is intentional */
+ }
+ ): Promise<T> {
+ // Create a timeout promise that rejects in timeout milliseconds
+ const timeoutPromise = new Promise<never>((_, reject) => {
+ setTimeout(() => {
+ timeoutCallback();
+ reject(timeoutError);
+ }, timeoutMs);
+ });
+
+ // Returns a race between timeout promise and the passed promise
+ return Promise.race<T>([promise, timeoutPromise]);
+ }
+
+ /**
+ * Generate a cryptographically secure random number in the [0,1[ range
+ *
+ * @returns
+ */
+ public static secureRandom(): number {
+ return crypto.randomBytes(4).readUInt32LE() / 0x100000000;
+ }
+
+ public static JSONStringifyWithMapSupport(
+ obj: Record<string, unknown> | Record<string, unknown>[],
+ space?: number
+ ): string {
+ return JSON.stringify(
+ obj,
+ (key, value: Record<string, unknown>) => {
+ if (value instanceof Map) {
+ return {
+ dataType: 'Map',
+ value: [...value],
+ };
+ }
+ return value;
+ },
+ space
+ );
+ }
+
/**
* Convert websocket error code to human readable string message
*
}
return '(Unknown)';
}
-
- public static workerPoolInUse(): boolean {
- return [WorkerProcessType.DYNAMIC_POOL, WorkerProcessType.STATIC_POOL].includes(Configuration.getWorkerProcess());
- }
-
- public static workerDynamicPoolInUse(): boolean {
- return Configuration.getWorkerProcess() === WorkerProcessType.DYNAMIC_POOL;
- }
-
- public static async promiseWithTimeout<T>(
- promise: Promise<T>,
- timeoutMs: number,
- timeoutError: Error,
- timeoutCallback: () => void = () => { /* This is intentional */ }
- ): Promise<T> {
- // Create a timeout promise that rejects in timeout milliseconds
- const timeoutPromise = new Promise<never>((_, reject) => {
- setTimeout(() => {
- timeoutCallback();
- reject(timeoutError);
- }, timeoutMs);
- });
-
- // Returns a race between timeout promise and the passed promise
- return Promise.race<T>([promise, timeoutPromise]);
- }
-
- /**
- * Generate a cryptographically secure random number in the [0,1[ range
- *
- * @returns
- */
- public static secureRandom(): number {
- return crypto.randomBytes(4).readUInt32LE() / 0x100000000;
- }
}
repositories / e-mobility-charging-stations-simulator.git / blobdiff