/** Base class for prompt errors, each with a stable `code`. */
export declare class PromptError extends Error {
    /** Stable code, such as `PROMPT_RENDER_ERROR`. */
    readonly code: string;
    constructor(message: string, 
    /** Stable code, such as `PROMPT_RENDER_ERROR`. */
    code: string);
}
/** Raised when a definition is invalid: an unknown or recursive partial, or a malformed placeholder. */
export declare class PromptDefinitionError extends PromptError {
    constructor(message: string);
}
/** Raised when rendering is missing variables and `missing` is `error`, the default. */
export declare class PromptRenderError extends PromptError {
    /** The prompt. */
    readonly prompt: string;
    /** Every variable that had no value. */
    readonly missing: readonly string[];
    constructor(
    /** The prompt. */
    prompt: string, 
    /** Every variable that had no value. */
    missing: readonly string[]);
}
/** Raised when a prompt, a version, or a label does not exist. */
export declare class PromptNotFoundError extends PromptError {
    /** The prompt. */
    readonly prompt: string;
    /** The version or label looked up. */
    readonly ref: string;
    constructor(
    /** The prompt. */
    prompt: string, 
    /** The version or label looked up. */
    ref: string);
}
/** Raised when a label moved while it was being changed, so the change was not applied. */
export declare class PromptConflictError extends PromptError {
    /** The prompt. */
    readonly prompt: string;
    /** The label that moved. */
    readonly label: string;
    constructor(
    /** The prompt. */
    prompt: string, 
    /** The label that moved. */
    label: string);
}
/** The verdict of one promotion gate. */
export interface GateResult {
    /** Names the gate in reports. */
    gate: string;
    /** Whether it allows the promotion. */
    ok: boolean;
    /** Why it refused, or what it checked. */
    reason?: string;
}
/** Raised when a gate refuses a promotion. Nothing moved. */
export declare class PromptPromotionError extends PromptError {
    /** The prompt. */
    readonly prompt: string;
    /** The label it was to be promoted to. */
    readonly to: string;
    /** Every gate's verdict, the refusals included. */
    readonly results: readonly GateResult[];
    constructor(
    /** The prompt. */
    prompt: string, 
    /** The label it was to be promoted to. */
    to: string, 
    /** Every gate's verdict, the refusals included. */
    results: readonly GateResult[]);
}