import type { FiatReadEndpoint } from '@funkit/api-base';
import type { PollSpec, Transition } from '@fun-xyz/fiat-contract/types';
export type SubmitTransition = Extract<Transition, {
    mode: 'SUBMIT';
}>;
export type AwaitTransition = Extract<Transition, {
    mode: 'AWAIT';
}>;
export type SurfaceTransition = Extract<Transition, {
    mode: 'CLIENT_SURFACE';
}>;
export interface TransitionDispatch {
    /** Every SUBMIT, in emitted order — the buttons a screen renders. */
    ctas: SubmitTransition[];
    /** At most one AWAIT; a second would mean two pollers on one state. */
    poll?: AwaitTransition;
    /** At most one CLIENT_SURFACE; the surface owns the screen while it runs. */
    surface?: SurfaceTransition;
}
/**
 * Splits `transitions[]` by mode so screens never inspect the array.
 *
 * Mode is the whole dispatch: SUBMIT is something the user does, AWAIT is
 * something the client waits for, CLIENT_SURFACE is something a provider runs.
 * A screen that filtered the array itself would be free to disagree with the
 * harness about which is which.
 *
 * Extra AWAIT or CLIENT_SURFACE entries are ignored rather than merged — the
 * first wins, deterministically, because running two pollers or mounting two
 * surfaces is worse than ignoring an emission the contract does not produce.
 */
export declare function selectTransitions(transitions: readonly Transition[]): TransitionDispatch;
/**
 * Builds a poll's request endpoint, with its params as a query string.
 *
 * Polls are GETs, so their `params` cannot ride in a body — and the recorded
 * `GET /fiat/quotes/{ref}` poll carries one. Encoded here rather than in the
 * transport, which takes the endpoint whole and stays free of the contract.
 *
 * Returns the read type: a poll that arrived as anything but a GET is a
 * contract violation, and the transport would refuse it for want of an
 * idempotency key it has no business minting for a read.
 */
export declare function buildPollEndpoint(poll: PollSpec): FiatReadEndpoint;
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