Master MCP Server

/** * Development and debugging helpers. */ export function isDev(): boolean { const env = (globalThis as any)?.process?.env return env?.NODE_ENV !== 'production' } export function debugLog(...args: unknown[]): void { if (!isDev()) return // eslint-disable-next-line no-console console.debug('[DEV]', ...args) } export function invariant(condition: unknown, message = 'Invariant failed'): asserts condition { if (!condition) throw new Error(message) } export function assertNever(x: never, message = 'Unexpected object'): never { throw new Error(`${message}: ${String(x)}`) } export function pretty(value: unknown): string { try { const util = (globalThis as any).require ? (globalThis as any).require('node:util') : undefined if (util?.inspect) return util.inspect(value, { depth: 4, colors: true }) } catch { // ignore } try { return JSON.stringify(value, null, 2) } catch { return String(value) } } export function deprecate(fn: (...args: any[]) => any, message: string): (...args: any[]) => any { let warned = false return (...args: any[]) => { if (!warned) { warned = true // eslint-disable-next-line no-console console.warn(`[DEPRECATED] ${message}`) } return fn(...args) } } export function withTiming<T>(name: string, fn: () => T): { result: T; durationMs: number; name: string } { const start = typeof performance !== 'undefined' ? performance.now() : Date.now() const result = fn() const durationMs = (typeof performance !== 'undefined' ? performance.now() : Date.now()) - start return { result, durationMs, name } } export function sleep(ms: number): Promise<void> { return new Promise((res) => setTimeout(res, ms)) } export function mockRandom(fn: () => number): () => void { const original = Math.random ;(Math as any).random = fn return () => { ;(Math as any).random = original } }