import type { SomeCompanionActionInputField, SomeCompanionFeedbackInputField } from '../main.js';
/** Properties that must never be used as action/feedback/preset/variable IDs to prevent prototype pollution */
export declare const BANNED_PROPS: Set<string>;
export declare function hasAnyOldIsVisibleFunctions(options: (SomeCompanionActionInputField | SomeCompanionFeedbackInputField)[] | undefined): boolean;
export declare function hasAnyOldRequiredProperties(options: (SomeCompanionActionInputField | SomeCompanionFeedbackInputField)[] | undefined): boolean;
/**
 * Find any option ids which are used by more than one input field in the same group, and remove the
 * duplicates so that only the first usage of each id is preserved.
 *
 * Duplicate ids cause unpredictable behaviour, as the fields would otherwise overwrite each other's values.
 */
export declare function filterDuplicateOptionIds<T extends {
    id: string;
}>(options: T[]): {
    options: T[];
    duplicateIds: string[];
};
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