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diff --git a/tools/node_modules/eslint/node_modules/state-toggle/index.js b/tools/node_modules/eslint/node_modules/state-toggle/index.js
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+/**
+ * @author Titus Wormer
+ * @copyright 2016 Titus Wormer
+ * @license MIT
+ * @module state-toggle
+ * @fileoverview Enter/exit a state.
+ */
+
+'use strict';
+
+/* eslint-env commonjs */
+
+/* Expose. */
+module.exports = factory;
+
+/**
+ * Construct a state `toggler`: a function which inverses
+ * `property` in context based on its current value.
+ * The by `toggler` returned function restores that value.
+ *
+ * @param {string} key - Property to toggle.
+ * @param {boolean} state - Default state.
+ * @param {Object?} [ctx] - Context object.
+ * @return {Function} - Enter.
+ */
+function factory(key, state, ctx) {
+  /**
+   * Enter a state.
+   *
+   * @return {Function} - Exit state.
+   */
+  return function () {
+    var context = ctx || this;
+    var current = context[key];
+
+    context[key] = !state;
+
+    /**
+     * Cancel state to its value before entering.
+     */
+    return function () {
+      context[key] = current;
+    };
+  };
+}