every.js 1.79 KB
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createTester = require('./internal/createTester');

var _createTester2 = _interopRequireDefault(_createTester);

var _eachOf = require('./eachOf');

var _eachOf2 = _interopRequireDefault(_eachOf);

var _awaitify = require('./internal/awaitify');

var _awaitify2 = _interopRequireDefault(_awaitify);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * 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|AsyncIterable|Object} coll - A collection to iterate over.
 * @param {AsyncFunction} iteratee - An async truth test to apply to each item
 * in the collection in parallel.
 * The iteratee must complete with a boolean result value.
 * 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).
 * @returns {Promise} a promise, if no callback provided
 * @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
 * });
 */
function every(coll, iteratee, callback) {
  return (0, _createTester2.default)(bool => !bool, res => !res)(_eachOf2.default, coll, iteratee, callback);
}
exports.default = (0, _awaitify2.default)(every, 3);
module.exports = exports['default'];