@mastra/core/dist/loop/shared/compose-step-input.d.ts

import type { MastraLanguageModel } from '../../llm/model/shared.types.js';
import type { RunProcessInputStepResult } from '../../processors/index.js';
/**
 * Shape of the per-step LLM input fields that an input-processor (or
 * `prepareStep`) is allowed to override.
 *
 * Note: this interface lists the canonical fields, but the helper preserves
 * any additional properties on the current step (e.g. `workspace` from
 * `PrepareStepResult`) by spreading `current` first.
 */
export interface StepInputFields {
    messageId: string;
    model: MastraLanguageModel;
    tools?: any;
    toolChoice?: any;
    activeTools?: string[] | undefined;
    providerOptions?: any;
    modelSettings?: any;
    structuredOutput?: any;
    [key: string]: any;
}
/**
 * Merge an input-step processor result back into the current step. Mirrors
 * the regular agentic-execution step's `Object.assign(currentStep, ...)`
 * semantics so the durable and non-durable paths apply `prepareStep` and
 * other input processors identically.
 *
 * Fields that the runner did not touch are preserved verbatim; fields the
 * runner did touch fully replace the current value. `modelSettings` is
 * intentionally replaced rather than shallow-merged — that matches the
 * non-durable path and matches the contract documented on processor
 * results, where the returned `modelSettings` is the final shape for this
 * step.
 */
export declare function composeStepInput(current: StepInputFields, processInputStepResult: RunProcessInputStepResult | undefined): StepInputFields;
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