tools: move eslint from tools to tools/node_modules

This is required because we need to add the babel-eslint dependency
and it has to be able to resolve "eslint".
babel-eslint is required to support future ES features such as async
iterators and import.meta.

Refs: https://github.com/nodejs/node/pull/17755
PR-URL: https://github.com/nodejs/node/pull/17820
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/lodash/unzip.js b/tools/node_modules/eslint/node_modules/lodash/unzip.js
new file mode 100644
index 0000000000..fce0ec78d1
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/lodash/unzip.js
@@ -0,0 +1,45 @@
+var arrayFilter = require('./_arrayFilter'),
+    arrayMap = require('./_arrayMap'),
+    baseProperty = require('./_baseProperty'),
+    baseTimes = require('./_baseTimes'),
+    isArrayLikeObject = require('./isArrayLikeObject');
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeMax = Math.max;
+
+/**
+ * This method is like `_.zip` except that it accepts an array of grouped
+ * elements and creates an array regrouping the elements to their pre-zip
+ * configuration.
+ *
+ * @static
+ * @memberOf _
+ * @since 1.2.0
+ * @category Array
+ * @param {Array} array The array of grouped elements to process.
+ * @returns {Array} Returns the new array of regrouped elements.
+ * @example
+ *
+ * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
+ * // => [['a', 1, true], ['b', 2, false]]
+ *
+ * _.unzip(zipped);
+ * // => [['a', 'b'], [1, 2], [true, false]]
+ */
+function unzip(array) {
+  if (!(array && array.length)) {
+    return [];
+  }
+  var length = 0;
+  array = arrayFilter(array, function(group) {
+    if (isArrayLikeObject(group)) {
+      length = nativeMax(group.length, length);
+      return true;
+    }
+  });
+  return baseTimes(length, function(index) {
+    return arrayMap(array, baseProperty(index));
+  });
+}
+
+module.exports = unzip;