import clone from 'just-clone';
-import Constants from './Constants';
-import { WebSocketCloseEventStatusString } from '../types/WebSocket';
+// import { Constants } from './internal';
+import { Constants } from './Constants';
+import { WebSocketCloseEventStatusString } from '../types';
-export default class Utils {
+export class Utils {
private constructor() {
// This is intentional
}
- public static logPrefix(prefixString = ''): string {
- return new Date().toLocaleString() + prefixString;
- }
+ public static logPrefix = (prefixString = ''): string => {
+ return `${new Date().toLocaleString()}${prefixString}`;
+ };
public static generateUUID(): string {
return crypto.randomUUID();
let secondsStr = seconds.toString();
if (hours < 10) {
- hoursStr = '0' + hours.toString();
+ hoursStr = `0${hours.toString()}`;
}
if (minutes < 10) {
- minutesStr = '0' + minutes.toString();
+ minutesStr = `0${minutes.toString()}`;
}
if (seconds < 10) {
- secondsStr = '0' + seconds.toString();
+ secondsStr = `0${seconds.toString()}`;
}
- return hoursStr + ':' + minutesStr + ':' + secondsStr.substring(0, 6);
+ return `${hoursStr}:${minutesStr}:${secondsStr.substring(0, 6)}`;
}
public static formatDurationSeconds(duration: number): string {
return result;
}
- public static getRandomFloat(max = Number.MAX_VALUE, min = 0, negative = false): number {
- if (max < min || max < 0 || min < 0) {
+ public static getRandomFloat(max = Number.MAX_VALUE, min = 0): number {
+ if (max < min) {
+ throw new RangeError('Invalid interval');
+ }
+ if (max - min === Infinity) {
throw new RangeError('Invalid interval');
}
- const randomPositiveFloat = crypto.randomBytes(4).readUInt32LE() / 0xffffffff;
- const sign = negative && randomPositiveFloat < 0.5 ? -1 : 1;
- return sign * (randomPositiveFloat * (max - min) + min);
+ return (crypto.randomBytes(4).readUInt32LE() / 0xffffffff) * (max - min) + min;
}
public static getRandomInteger(max = Constants.MAX_RANDOM_INTEGER, min = 0): number {
return clone<T>(object);
}
+ public static hasOwnProp(object: unknown, property: PropertyKey): boolean {
+ return Utils.isObject(object) && Object.hasOwn(object as object, property);
+ }
+
+ public static isCFEnvironment(): boolean {
+ return process.env.VCAP_APPLICATION !== undefined;
+ }
+
public static isIterable<T>(obj: T): boolean {
- return obj ? typeof obj[Symbol.iterator] === 'function' : false;
+ return !Utils.isNullOrUndefined(obj) ? typeof obj[Symbol.iterator] === 'function' : false;
}
public static isString(value: unknown): boolean {
}
public static isEmptyString(value: unknown): boolean {
- return Utils.isString(value) && (value as string).trim().length === 0;
+ return (
+ Utils.isNullOrUndefined(value) ||
+ (Utils.isString(value) && (value as string).trim().length === 0)
+ );
+ }
+
+ public static isNotEmptyString(value: unknown): boolean {
+ return Utils.isString(value) && (value as string).trim().length > 0;
}
public static isUndefined(value: unknown): boolean {
- return typeof value === 'undefined';
+ return value === undefined;
}
public static isNullOrUndefined(value: unknown): boolean {
// eslint-disable-next-line eqeqeq, no-eq-null
- return value == null ? true : false;
+ return value == null;
}
public static isEmptyArray(object: unknown | unknown[]): boolean {
- if (!Array.isArray(object)) {
- return true;
- }
- if (object.length > 0) {
- return false;
- }
- return true;
+ return Array.isArray(object) && object.length === 0;
+ }
+
+ public static isNotEmptyArray(object: unknown | unknown[]): boolean {
+ return Array.isArray(object) && object.length > 0;
}
public static isEmptyObject(obj: object): boolean {