/**
 * Parse a value of unknown type as a boolean or return undefined if the value is non-boolean.
 * @param value The value to parse as a boolean.
 */
export declare function parseAsBoolean<V extends `${BooleanBasic}`>(value: BooleanBasic | V): boolean | undefined;
export declare enum BooleanBasic {
    yes = "Yes",
    no = "No"
}