DefinitelyTyped/types/iniparser/iniparser-tests.ts

import * as iniparser from 'iniparser';

type Result = {section: {param: string}};

let file: string;

{
    let callback: (err: any, data: Result) => void;
    let result: void;

    iniparser.parse(file, callback);
}

{
    let result: Result;

    result = iniparser.parseSync<Result>(file);
    result = iniparser.parseString<Result>('');
}