iteragain/dist/cjs/flatMap.d.ts

Javascript Iterable/Iterator/Generator-function utilities.

import type { IterSource, Iteratee, IteratorOrIterable } from './types';
/**
 * Maps the input iterator to a new value `R` and flattens any resulting iterables or iterators by a depth of 1.
 * Behaves the same as `Array.prototype.flatMap`.
 *
 * **Strings returned from `iteratee` are not flattened** into characters. Return an array (e.g. `[...str]`) when you
 * want character-level results.
 *
 * @example
 * ```js
 * [...flatMap(['123'], str => str)]; // ['123']
 * [...flatMap(['123'], str => [...str])]; // ['1', '2', '3']
 * ```
 */
export declare function flatMap<T extends IteratorOrIterable<unknown>, R>(arg: T, iteratee: Iteratee<IterSource<T>, R | IteratorOrIterable<R>>): IterableIterator<R>;
export declare function flatMap<T extends IteratorOrIterable<unknown>, R>(iteratee: Iteratee<IterSource<T>, R | IteratorOrIterable<R>>): (arg: T) => IterableIterator<R>;
export default flatMap;
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