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, 59 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/remark-parse/lib/set-options.js b/tools/node_modules/eslint/node_modules/remark-parse/lib/set-options.js
new file mode 100644
index 0000000000..3f9abad7c4
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/remark-parse/lib/set-options.js
@@ -0,0 +1,59 @@
+/**
+ * @author Titus Wormer
+ * @copyright 2015 Titus Wormer
+ * @license MIT
+ * @module remark:parse
+ * @fileoverview Markdown parser.
+ */
+
+'use strict';
+
+var xtend = require('xtend');
+var escapes = require('markdown-escapes');
+var defaults = require('./defaults');
+
+module.exports = setOptions;
+
+/* Set options. */
+function setOptions(options) {
+  var self = this;
+  var current = self.options;
+  var key;
+  var value;
+
+  if (options == null) {
+    options = {};
+  } else if (typeof options === 'object') {
+    options = xtend(options);
+  } else {
+    throw new Error(
+      'Invalid value `' + options + '` ' +
+      'for setting `options`'
+    );
+  }
+
+  for (key in defaults) {
+    value = options[key];
+
+    if (value == null) {
+      value = current[key];
+    }
+
+    if (
+      (key !== 'blocks' && typeof value !== 'boolean') ||
+      (key === 'blocks' && typeof value !== 'object')
+    ) {
+      throw new Error(
+        'Invalid value `' + value + '` ' +
+        'for setting `options.' + key + '`'
+      );
+    }
+
+    options[key] = value;
+  }
+
+  self.options = options;
+  self.escape = escapes(options);
+
+  return self;
+}