/**
 * Key Transition
 *
 * The single owner of "what does this key press do?". A pure function of
 * (state, key) that settles into the next state plus the effects the shell
 * should perform. Nothing here touches the terminal, the network, or the
 * clock, so every key path is reachable from a test through this one
 * interface, the same one the shell uses.
 *
 * Effects are data, never callbacks. The shell performs them; this module
 * decides them.
 */
import type { InitTemplate } from "../commands/init/types.js";
import { type AppState, type ProjectInfo } from "./state.js";
export declare const KEY_UP = "\u001B[A";
export declare const KEY_DOWN = "\u001B[B";
export declare const KEY_ESCAPE = "\u001B";
export declare const KEY_ENTER = "\r";
export declare const KEY_NEWLINE = "\n";
export declare const KEY_CTRL_C = "\u0003";
export declare const KEY_TAB = "\t";
export type AuthProvider = "google" | "github" | "microsoft";
export declare const AUTH_PROVIDERS: AuthProvider[];
/** Work the shell performs on the reducer's behalf. */
export type Effect = {
    kind: "exit";
} | {
    kind: "open-browser";
    project: ProjectInfo;
} | {
    kind: "open-studio";
    project: ProjectInfo;
} | {
    kind: "open-ide";
    project: ProjectInfo;
} | {
    kind: "pull";
    project: ProjectInfo;
} | {
    kind: "push";
    project: ProjectInfo;
} | {
    kind: "login";
    provider: AuthProvider;
} | {
    kind: "logout";
} | {
    kind: "open-mcp-settings";
} | {
    kind: "create-project";
    template: InitTemplate;
    name: string;
};
export interface KeyResult {
    state: AppState;
    effects: Effect[];
}
/**
 * The impure facts the transition needs. Injected rather than reached for, so
 * the reducer stays a pure function and tests can pin the suggestion.
 */
export interface KeyEnv {
    /** Pre-filled value for the project-name prompt. */
    suggestProjectName: () => string;
}
/**
 * Reduce one key press against the current state.
 *
 * The returned state is always the state to adopt, there is no second write
 * path. Callers assign it and run the effects; they never mutate state
 * themselves.
 */
export declare function reduceKey(state: AppState, key: string, env: KeyEnv): KeyResult;
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