export interface CoerceBooleanOpts {
    /**
     * Strings that should be interpreted as `false` (case-insensitive).
     *
     * @important @see {@link Falsy} for already provided common falsy strings.
     */
    falsy?: string[];
    /**
     * Strings that should be interpreted as `true` (case-insensitive).
     *
     * @important @see {@link Truthy} for already provided common truthy strings.
     */
    truthy?: string[];
}
/**
 * Coerces a value to a boolean.
 * - For boolean inputs, returns the input as is.
 * - For string inputs, checks against predefined truthy and falsy string sets (case-insensitive).
 * - For all other types, uses standard JavaScript truthiness evaluation.
 */
export declare const coerceBoolean: (input: unknown, { falsy, truthy }?: CoerceBooleanOpts) => boolean;