Function assert

test/resilience-errors.ts:26–34

(condition: boolean, msg: string)

let failed = 0;

function assert(condition: boolean, msg: string) {
  if (condition) {
    console.log(`  ✓ ${msg}`);
    passed++;
  } else {
    console.error(`  ✗ FAIL: ${msg}`);
    failed++;
  }
}

function sleep(ms: number): Promise<void> {
  return new Promise((resolve) => setTimeout(resolve, ms));