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website/functions/node_modules/@mrmlnc/readdir-enhanced/lib/async/for-each.js

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+'use strict';
+
+module.exports = asyncForEach;
+
+/**
+ * Simultaneously processes all items in the given array.
+ *
+ * @param {array} array - The array to iterate over
+ * @param {function} iterator - The function to call for each item in the array
+ * @param {function} done - The function to call when all iterators have completed
+ */
+function asyncForEach (array, iterator, done) {
+  if (array.length === 0) {
+    // NOTE: Normally a bad idea to mix sync and async, but it's safe here because
+    // of the way that this method is currently used by DirectoryReader.
+    done();
+    return;
+  }
+
+  // Simultaneously process all items in the array.
+  let pending = array.length;
+  array.forEach(item => {
+    iterator(item, () => {
+      if (--pending === 0) {
+        done();
+      }
+    });
+  });
+}

website/functions/node_modules/@mrmlnc/readdir-enhanced/lib/async/index.js

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+'use strict';
+
+module.exports = readdirAsync;
+
+const maybe = require('call-me-maybe');
+const DirectoryReader = require('../directory-reader');
+
+let asyncFacade = {
+  fs: require('fs'),
+  forEach: require('./for-each'),
+  async: true
+};
+
+/**
+ * Returns the buffered output from an asynchronous {@link DirectoryReader},
+ * via an error-first callback or a {@link Promise}.
+ *
+ * @param {string} dir
+ * @param {object} [options]
+ * @param {function} [callback]
+ * @param {object} internalOptions
+ */
+function readdirAsync (dir, options, callback, internalOptions) {
+  if (typeof options === 'function') {
+    callback = options;
+    options = undefined;
+  }
+
+  return maybe(callback, new Promise(((resolve, reject) => {
+    let results = [];
+
+    internalOptions.facade = asyncFacade;
+
+    let reader = new DirectoryReader(dir, options, internalOptions);
+    let stream = reader.stream;
+
+    stream.on('error', err => {
+      reject(err);
+      stream.pause();
+    });
+    stream.on('data', result => {
+      results.push(result);
+    });
+    stream.on('end', () => {
+      resolve(results);
+    });
+  })));
+}