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, 44 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/lodash/castArray.js b/tools/node_modules/eslint/node_modules/lodash/castArray.js
new file mode 100644
index 0000000000..e470bdb9b9
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/lodash/castArray.js
@@ -0,0 +1,44 @@
+var isArray = require('./isArray');
+
+/**
+ * Casts `value` as an array if it's not one.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.4.0
+ * @category Lang
+ * @param {*} value The value to inspect.
+ * @returns {Array} Returns the cast array.
+ * @example
+ *
+ * _.castArray(1);
+ * // => [1]
+ *
+ * _.castArray({ 'a': 1 });
+ * // => [{ 'a': 1 }]
+ *
+ * _.castArray('abc');
+ * // => ['abc']
+ *
+ * _.castArray(null);
+ * // => [null]
+ *
+ * _.castArray(undefined);
+ * // => [undefined]
+ *
+ * _.castArray();
+ * // => []
+ *
+ * var array = [1, 2, 3];
+ * console.log(_.castArray(array) === array);
+ * // => true
+ */
+function castArray() {
+  if (!arguments.length) {
+    return [];
+  }
+  var value = arguments[0];
+  return isArray(value) ? value : [value];
+}
+
+module.exports = castArray;