/** Complete envelope validation before a batch or pipeline can execute side effects. */
import type { BatchCommand, BatchRequest } from './batch.js';
import type { CommandError } from './errors.js';
import type { PipelineRequest, PipelineStep } from './pipeline.js';
export declare function isBatchCommand(value: unknown): value is BatchCommand;
export declare function isBatchRequest(value: unknown): value is BatchRequest;
export declare function isPipelineStep(value: unknown): value is PipelineStep;
/**
 * Check pipeline limits that apply after the envelope is valid: step inputs and the request
 * `input` may nest at most 64 levels. Returns a `VALIDATION_ERROR`, or undefined when within
 * limits. Iterative, so deep or cyclic inputs never overflow the stack.
 */
export declare function pipelineLimitError(request: PipelineRequest): CommandError | undefined;
export declare function isPipelineRequest(value: unknown): value is PipelineRequest;
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