import { ValidationRule, ValidationContext, ValidationSeverity } from '../interfaces';
/**
 * Options for NoAsyncRule
 */
export interface NoAsyncOptions {
    /** Whether to allow async functions */
    allowAsyncFunctions?: boolean;
    /** Whether to allow await expressions */
    allowAwait?: boolean;
    /** Custom message */
    message?: string;
}
/**
 * Rule that prevents usage of async/await
 *
 * Useful for synchronous-only execution environments.
 */
export declare class NoAsyncRule implements ValidationRule {
    private options;
    readonly name = "no-async";
    readonly description = "Prevents usage of async/await constructs";
    readonly defaultSeverity = ValidationSeverity.ERROR;
    readonly enabledByDefault = false;
    constructor(options?: NoAsyncOptions);
    validate(context: ValidationContext): void;
}