/**
 * @module builder-utils
 * @category Internal
 *
 * Shared builder machinery reused by both `act-builder.ts` and
 * `slice-builder.ts`. The two builders expose the same reaction-registration
 * and lane-declaration surface and differ only in the concrete builder type
 * they return (`ActBuilder` vs `SliceBuilder`) and the event register they
 * write into (`registry.events` vs the slice's `events`). This module owns the
 * one copy of that logic so the builders stay thin delegations.
 *
 * @internal
 */
import { type DeferSchedule } from "../internal/index.js";
import type { Committed, EventRegister, LaneConfig, ReactionHandler, ReactionOptions, ReactionResolver, Schemas } from "../types/index.js";
/**
 * Validate and register a drain lane (ACT-1103): the `"default"` name is
 * reserved and each lane name must be unique. Mutates `lanes` in place; the
 * caller returns its own builder for chaining.
 *
 * @internal
 */
export declare function register_lane(config: LaneConfig, lanes: LaneConfig[]): void;
/**
 * Build the `.on(event)` step shared by both builders. Registers a reaction
 * (named-function + duplicate guards, fail-fast literal-schedule validation,
 * the default `_this_` resolver, and the `.defer` handler wrap) into
 * `events[event].reactions`, and hands back `builder` patched with `.to(...)`
 * for in-place resolver routing.
 *
 * The strict, builder-specific type is supplied by each builder's own `on`
 * signature ({@link ReactionOn}); the runtime here is builder-agnostic.
 *
 * @internal
 */
export declare function reaction_on<TEvents extends Schemas, TKey extends keyof TEvents, TBuilder>(event: TKey, events: EventRegister<TEvents>, builder: TBuilder): {
    do: (handler: ReactionHandler<TEvents, TKey>, options?: Partial<ReactionOptions>) => object & {
        to(resolver: ReactionResolver<TEvents, TKey> | string): TBuilder;
    };
    defer: (schedule: DeferSchedule<Committed<TEvents, TKey>>) => {
        do: (handler: ReactionHandler<TEvents, TKey>, options?: Partial<ReactionOptions>) => object & {
            to(resolver: ReactionResolver<TEvents, TKey> | string): TBuilder;
        };
    };
};
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