import {promises as fs} from "fs"; import path from "path"; export async function sleep(ms: number): Promise { return await new Promise(resolve => { setTimeout(() => resolve(), ms); }); } export abstract class WrappingError extends Error { public readonly cause?: Error; protected constructor(message: string, cause?: Error) { super(message); this.cause = cause; if (cause !== undefined) { this.stack = (this.stack || '') + `\n> Caused by: ${cause.stack}`; } } public get name(): string { return this.constructor.name; } } export type Type = { new(...args: never[]): T }; export function bufferToUuid(buffer: Buffer): string { const chars = buffer.toString('hex'); let out = ''; let i = 0; for (const l of [8, 4, 4, 4, 12]) { if (i > 0) out += '-'; out += chars.substr(i, l); i += l; } return out; } export function getMethods(obj: T): string[] { const properties = new Set(); let currentObj: T | unknown = obj; do { Object.getOwnPropertyNames(currentObj).map(item => properties.add(item)); currentObj = Object.getPrototypeOf(currentObj); } while (currentObj); return [...properties.keys()].filter(item => typeof obj[item] === 'function'); } export async function listFilesRecursively(dir: string): Promise { const localFiles = await fs.readdir(dir); const files: string[] = []; for (const file of localFiles.map(file => path.join(dir, file))) { const stat = await fs.stat(file); if (stat.isDirectory()) { files.push(...await listFilesRecursively(file)); } else { files.push(file); } } return files; } export async function doesFileExist(file: string): Promise { try { await fs.stat(file); } catch (err) { if (err.code === 'ENOENT') { return false; } else { throw err; } } return true; }