/**
 * #### Delays the execution of the passed function to increase the render performance
 *
 * * * *
 * Example usage:
 * ```typescript
 * import { defer } from "@thalesrc/js-utils/function";
 *
 * defer(() => aFunctionToDefer())
 *  .then(res => ...)
 *  .catch(err => ...);
 * ```
 * Example as promise static method
 * ```typescript
 * import "@thalesrc/js-utils/function/static/defer";
 *
 * Function.defer(() => aFunctionToDefer())
 *  .then(res => ...)
 *  .catch(err => ...);
 * ```
 * * * *
 * @param callback Callback function to be executed
 * @typeparam T type of the return value of the callback
 * @returns A promise which resolves with the value of the callback right after the execution
 */
export declare function defer<T = any>(callback?: () => T): Promise<T>;