export declare const tests: {
    "findIndex returns the first index of a given item"(): Promise<void>;
    "findIndex throws an error if no item is found"(): Promise<void>;
    "findIndex with no argument returns the first index for which the value is truthy"(): Promise<void>;
    "findIndex returns the default value if not found"(): Promise<void>;
    "findIndex iterator closing"(): Promise<void>;
};