tools: update to ESLint 4.1.0

Update ESLint to 4.1.0. This fixes a bug that previously prevented us
from using the new and stricter indentation checking.

Refs: https://github.com/eslint/eslint/issues/8721
PR-URL: https://github.com/nodejs/node/pull/13895
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/tools/eslint/node_modules/safe-buffer/index.js b/tools/eslint/node_modules/safe-buffer/index.js
index 74a7358ee8..22438dabbb 100644
--- a/tools/eslint/node_modules/safe-buffer/index.js
+++ b/tools/eslint/node_modules/safe-buffer/index.js
@@ -1,12 +1,18 @@
+/* eslint-disable node/no-deprecated-api */
 var buffer = require('buffer')
+var Buffer = buffer.Buffer
 
+// alternative to using Object.keys for old browsers
+function copyProps (src, dst) {
+  for (var key in src) {
+    dst[key] = src[key]
+  }
+}
 if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
   module.exports = buffer
 } else {
   // Copy properties from require('buffer')
-  Object.keys(buffer).forEach(function (prop) {
-    exports[prop] = buffer[prop]
-  })
+  copyProps(buffer, exports)
   exports.Buffer = SafeBuffer
 }
 
@@ -15,9 +21,7 @@ function SafeBuffer (arg, encodingOrOffset, length) {
 }
 
 // Copy static methods from Buffer
-Object.keys(Buffer).forEach(function (prop) {
-  SafeBuffer[prop] = Buffer[prop]
-})
+copyProps(Buffer, SafeBuffer)
 
 SafeBuffer.from = function (arg, encodingOrOffset, length) {
   if (typeof arg === 'number') {