export declare const WIDGET_ERROR_CODES: readonly ["E_BAD_MESSAGE", "E_BAD_BRIDGE", "E_BRIDGE_DISCONNECTED", "E_BRIDGE_UNREACHABLE", "E_BRIDGE_SEND_FAILED", "E_TIMEOUT", "E_QUEUE_FULL", "E_NODE_NOT_FOUND", "E_NODE_VERSION_CONFLICT", "E_EXEC_TOO_LARGE", "E_EXEC_REJECTED", "E_EXEC_BUDGET_EXCEEDED", "E_EXEC_TIMEOUT", "E_FIGMA_FORMAT_UNSUPPORTED", "E_FIGMA_SCALE_OUT_OF_RANGE", "E_FIGMA_COLOR_INVALID", "E_FIGMA_FONT_FAILED", "E_FIGMA_MIXED", "E_PARAM_INVALID", "E_UNKNOWN"];
export type WidgetErrorCode = (typeof WIDGET_ERROR_CODES)[number];
export interface WidgetError {
    code: WidgetErrorCode;
    message: string;
    retryable: boolean;
    detail?: Record<string, unknown>;
    cause?: {
        name?: string;
        message?: string;
        stack?: string;
    };
}
export declare function makeError(code: WidgetErrorCode, message: string, options?: {
    retryable?: boolean;
    detail?: Record<string, unknown>;
    cause?: unknown;
}): WidgetError;
export declare function fromUnknown(value: unknown, fallbackCode?: WidgetErrorCode): WidgetError;
export declare function isWidgetError(value: unknown): value is WidgetError;
export type Result<T, E = WidgetError> = {
    ok: true;
    value: T;
} | {
    ok: false;
    error: E;
};
export declare function ok<T>(value: T): Result<T>;
export declare function err<E = WidgetError>(error: E): Result<never, E>;