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, 21 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/graceful-fs/fs.js b/tools/node_modules/eslint/node_modules/graceful-fs/fs.js
new file mode 100644
index 0000000000..8ad4a38396
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/graceful-fs/fs.js
@@ -0,0 +1,21 @@
+'use strict'
+
+var fs = require('fs')
+
+module.exports = clone(fs)
+
+function clone (obj) {
+  if (obj === null || typeof obj !== 'object')
+    return obj
+
+  if (obj instanceof Object)
+    var copy = { __proto__: obj.__proto__ }
+  else
+    var copy = Object.create(null)
+
+  Object.getOwnPropertyNames(obj).forEach(function (key) {
+    Object.defineProperty(copy, key, Object.getOwnPropertyDescriptor(obj, key))
+  })
+
+  return copy
+}