lib/detectLimit.js


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'use strict';

import identity from 'lodash/identity';

import createTester from './internal/createTester';
import eachOfLimit from './eachOfLimit';
import findGetResult from './internal/findGetResult';

/**
 * The same as `detect` but runs a maximum of `limit` async operations at a
 * time.
 *
 * @name detectLimit
 * @static
 * @memberOf async
 * @see async.detect
 * @alias findLimit
 * @category Collection
 * @param {Array|Object} coll - A collection to iterate over.
 * @param {number} limit - The maximum number of async operations at a time.
 * @param {Function} iteratee - A truth test to apply to each item in `coll`.
 * The iteratee is passed a `callback(err, truthValue)` which must be called
 * with a boolean argument once it has completed. Invoked with (item, callback).
 * @param {Function} [callback] - A callback which is called as soon as any
 * iteratee returns `true`, or after all the `iteratee` functions have finished.
 * Result will be the first item in the array that passes the truth test
 * (iteratee) or the value `undefined` if none passed. Invoked with
 * (err, result).
 */
export default createTester(eachOfLimit, identity, findGetResult);