import { type DynamicResolveContext, type DynamicSentinel } from "#dynamic/definition.js";
import type { ExactDefinition } from "#public/definitions/exact.js";
import { type PublicInstructionsDefinition } from "#shared/instructions-definition.js";
export type InstructionsDefinition = Readonly<PublicInstructionsDefinition>;
/**
 * Defines instructions in TypeScript from a `{ content, role? }`
 * definition. Omitted `role` defaults to `"system"`.
 *
 * Use it to return instructions from a `defineDynamic` resolver in
 * `agent/instructions/`. For a fixed prompt with no resolver,
 * author `instructions.md` instead. The result is branded so the dynamic
 * instruction lifecycle can validate that a resolver return came through
 * this helper.
 */
export declare function defineInstructions<TInstructions extends InstructionsDefinition>(definition: ExactDefinition<TInstructions, InstructionsDefinition>): TInstructions;
export type DynamicInstructionsResult = InstructionsDefinition | null;
export type DynamicInstructionsEvents = {
    readonly [K in "session.started" | "turn.started"]?: (event: unknown, ctx: DynamicResolveContext) => DynamicInstructionsResult | Promise<DynamicInstructionsResult>;
};
/**
 * Defines a runtime instructions resolver for session and turn boundaries.
 */
export declare function defineDynamic<const TEvents extends DynamicInstructionsEvents>(definition: {
    readonly events: ExactDefinition<TEvents, DynamicInstructionsEvents>;
}): DynamicSentinel<DynamicInstructionsResult>;