//#region extensions/crypto/src/services/allowance-manager.d.ts
/**
 * Token Allowance Manager — batch ERC-20 allowance checking and tracking.
 *
 * Provides:
 * - Batch allowance checks across multiple tokens and spenders
 * - Permit2 allowance aggregation
 * - Unlimited/excessive allowance detection
 * - Revocation recommendations
 * - Common spender identification (Uniswap Router, 0x Exchange Proxy, etc.)
 *
 * Security concern: ERC-20 approvals are a major attack vector — unlimited
 * approvals to compromised contracts can drain tokens. This service helps
 * users audit and manage their exposure.
 */
interface AllowanceInfo {
  token: string;
  tokenAddress: string;
  spender: string;
  spenderName: string;
  spenderAddress: string;
  allowance: string;
  allowanceHuman: string;
  isUnlimited: boolean;
  riskLevel: 'safe' | 'moderate' | 'high' | 'critical';
  chain: string;
  chainId: number;
}
interface AllowanceReport {
  owner: string;
  chainId: number;
  chain: string;
  totalChecked: number;
  unlimited: number;
  highRisk: number;
  allowances: AllowanceInfo[];
  recommendations: string[];
  timestamp: number;
}
interface AllowanceManagerConfig {
  /** Threshold (in human-readable units) above which an allowance is flagged. Default: 1e12 */
  unlimitedThreshold?: number;
}
declare class AllowanceManager {
  private config;
  constructor(config?: AllowanceManagerConfig);
  /**
   * Check allowances for a wallet against known spenders.
   * Scans common tokens × common spenders on a given chain.
   */
  auditAllowances(ownerAddress: string, chainId?: number, tokenAddresses?: string[]): Promise<AllowanceReport>;
  /**
   * Check a single token's allowance for a specific spender.
   */
  checkAllowance(ownerAddress: string, tokenAddress: string, spenderAddress: string, chainId?: number): Promise<{
    allowance: string;
    decimals: number;
    isUnlimited: boolean;
  }>;
  /**
   * Get known spender names for a chain.
   */
  getKnownSpenders(chainId?: number): Record<string, string>;
  /**
   * Resolve a spender address to a human-readable name.
   */
  resolveSpenderName(address: string, chainId?: number): string;
  private assessRisk;
}
declare function getAllowanceManager(config?: AllowanceManagerConfig): AllowanceManager;
declare function resetAllowanceManager(): void;
//#endregion
export { AllowanceInfo, AllowanceManager, AllowanceManagerConfig, AllowanceReport, getAllowanceManager, resetAllowanceManager };
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