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        <h1 class="page-title">reject.js</h1>
        

        



    
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        <article>
            <pre class="prettyprint source linenums"><code>import _reject from &apos;./internal/reject.js&apos;
import eachOf from &apos;./eachOf.js&apos;
import awaitify from &apos;./internal/awaitify.js&apos;

/**
 * The opposite of [`filter`]{@link module:Collections.filter}. Removes values that pass an `async` truth test.
 *
 * @name reject
 * @static
 * @memberOf module:Collections
 * @method
 * @see [async.filter]{@link module:Collections.filter}
 * @category Collection
 * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
 * @param {Function} iteratee - An async truth test to apply to each item in
 * `coll`.
 * The should complete with a boolean value as its `result`.
 * Invoked with (item, callback).
 * @param {Function} [callback] - A callback which is called after all the
 * `iteratee` functions have finished. Invoked with (err, results).
 * @returns {Promise} a promise, if no callback is passed
 * @example
 *
 * // dir1 is a directory that contains file1.txt, file2.txt
 * // dir2 is a directory that contains file3.txt, file4.txt
 * // dir3 is a directory that contains file5.txt
 *
 * const fileList = [&apos;dir1/file1.txt&apos;,&apos;dir2/file3.txt&apos;,&apos;dir3/file6.txt&apos;];
 *
 * // asynchronous function that checks if a file exists
 * function fileExists(file, callback) {
 *    fs.access(file, fs.constants.F_OK, (err) =&gt; {
 *        callback(null, !err);
 *    });
 * }
 *
 * // Using callbacks
 * async.reject(fileList, fileExists, function(err, results) {
 *    // [ &apos;dir3/file6.txt&apos; ]
 *    // results now equals an array of the non-existing files
 * });
 *
 * // Using Promises
 * async.reject(fileList, fileExists)
 * .then( results =&gt; {
 *     console.log(results);
 *     // [ &apos;dir3/file6.txt&apos; ]
 *     // results now equals an array of the non-existing files
 * }).catch( err =&gt; {
 *     console.log(err);
 * });
 *
 * // Using async/await
 * async () =&gt; {
 *     try {
 *         let results = await async.reject(fileList, fileExists);
 *         console.log(results);
 *         // [ &apos;dir3/file6.txt&apos; ]
 *         // results now equals an array of the non-existing files
 *     }
 *     catch (err) {
 *         console.log(err);
 *     }
 * }
 *
 */
function reject (coll, iteratee, callback) {
    return _reject(eachOf, coll, iteratee, callback)
}
export default awaitify(reject, 3);
</code></pre>
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