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, 29 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/remark-parse/lib/util/normalize.js b/tools/node_modules/eslint/node_modules/remark-parse/lib/util/normalize.js
new file mode 100644
index 0000000000..3602a18f78
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/remark-parse/lib/util/normalize.js
@@ -0,0 +1,29 @@
+/**
+ * @author Titus Wormer
+ * @copyright 2015 Titus Wormer
+ * @license MIT
+ * @module remark:parse:util:normalize
+ * @fileoverview Normalize an identifier.
+ */
+
+'use strict';
+
+/* Dependencies. */
+var collapseWhiteSpace = require('collapse-white-space');
+
+/* Expose. */
+module.exports = normalize;
+
+/**
+ * Normalize an identifier.  Collapses multiple white space
+ * characters into a single space, and removes casing.
+ *
+ * @example
+ *   normalizeIdentifier('FOO\t bar'); // 'foo bar'
+ *
+ * @param {string} value - Content to normalize.
+ * @return {string} - Normalized content.
+ */
+function normalize(value) {
+  return collapseWhiteSpace(value).toLowerCase();
+}