async/lib/every.js at gh-pages · againksy/async

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import createTester from './internal/createTester';

import doParallel from './internal/doParallel';

import notId from './internal/notId';

/**

* Returns `true` if every element in `coll` satisfies an async test. If any

* iteratee call returns `false`, the main `callback` is immediately called.

* @name every

* @static

* @memberOf module:Collections

* @method

* @alias all

* @category Collection

* @param {Array|Iterable|Object} coll - A collection to iterate over.

* @param {Function} iteratee - A truth test to apply to each item in the

* collection in parallel. 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 after all the

* `iteratee` functions have finished. Result will be either `true` or `false`

* depending on the values of the async tests. Invoked with (err, result).

* @example

* async.every(['file1','file2','file3'], function(filePath, callback) {

* fs.access(filePath, function(err) {

* callback(null, !err)

* });

* }, function(err, result) {

* // if result is true then every file exists

* });

export default doParallel(createTester(notId, notId));