import type { RequestArguments } from "@metamask/providers";
import type { Json } from "@metamask/utils";
/**
 * Make proxy for Promise and handle the teardown process properly.
 * If the teardown is called in the meanwhile, Promise result will not be
 * exposed to the snap anymore and warning will be logged to the console.
 *
 * @param originalPromise - Original promise.
 * @param teardownRef - Reference containing teardown count.
 * @param teardownRef.lastTeardown - Number of the last teardown.
 * @returns New proxy promise.
 */
export declare function withTeardown<Type>(originalPromise: Promise<Type>, teardownRef: {
    lastTeardown: number;
}): Promise<Type>;
export declare const BLOCKED_RPC_METHODS: readonly string[];
export declare const MULTICHAIN_API_METHODS: readonly string[];
export declare const BLOCKED_MULTICHAIN_RPC_METHODS: readonly string[];
/**
 * Check whether a validated request should be routed to the multichain API.
 *
 * @param args - The request arguments.
 * @returns True if the request is a multichain request, otherwise false.
 */
export declare function isMultichainRequest(args: RequestArguments): boolean;
/**
 * Asserts the validity of request arguments for a multichain outbound request using the `snap.request` API.
 *
 * @param args - The arguments to validate.
 */
export declare function assertMultichainOutboundRequest(args: RequestArguments): void;
/**
 * Asserts the validity of request arguments for a snap outbound request using the `snap.request` API.
 *
 * @param args - The arguments to validate.
 */
export declare function assertSnapOutboundRequest(args: RequestArguments): void;
/**
 * Asserts the validity of request arguments for an ethereum outbound request using the `ethereum.request` API.
 *
 * @param args - The arguments to validate.
 */
export declare function assertEthereumOutboundRequest(args: RequestArguments): void;
/**
 * Gets a sanitized value to be used for passing to the underlying MetaMask provider.
 *
 * @param value - An unsanitized value from a snap.
 * @returns A sanitized value ready to be passed to a MetaMask provider.
 */
export declare function sanitizeRequestArguments(value: unknown): RequestArguments;
/**
 * Check if the input is a valid response.
 *
 * @param response - The response.
 * @returns True if the response is valid, otherwise false.
 */
export declare function isValidResponse(response: Record<string, Json>): boolean;
//# sourceMappingURL=utils.d.mts.map