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>

4 files changed, 111 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/x-is-function/LICENSE b/tools/node_modules/eslint/node_modules/x-is-function/LICENSE
new file mode 100644
index 0000000000..4f2aa21a49
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/x-is-function/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 Alexander Praetorius
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/tools/node_modules/eslint/node_modules/x-is-function/README.md b/tools/node_modules/eslint/node_modules/x-is-function/README.md
new file mode 100644
index 0000000000..0c21a7e9ff
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/x-is-function/README.md
@@ -0,0 +1,41 @@
+# x-is-function
+x is a function
+
+# usage
+`npm install x-is-function`
+
+```js
+var isFunction = require('x-is-function')
+
+isFunction(function () {})
+// -> true
+
+isFunction("hello")
+// -> false
+
+isFunction("")
+// -> false
+
+isFunction(9)
+// -> false
+
+isFunction(true)
+// -> false
+
+isFunction(new Date())
+// -> false
+
+isFunction({})
+// -> false
+
+isFunction(null)
+// -> false
+
+isFunction(undefined)
+// -> false
+```
+
+
+# related
+a list of other `x-is-...` modules can be found at
+* [x-is](https://www.npmjs.com/package/x-is)
diff --git a/tools/node_modules/eslint/node_modules/x-is-function/index.js b/tools/node_modules/eslint/node_modules/x-is-function/index.js
new file mode 100644
index 0000000000..b820d6318d
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/x-is-function/index.js
@@ -0,0 +1,3 @@
+module.exports = function isFunction (fn) {
+  return Object.prototype.toString.call(fn) === '[object Function]'
+}
diff --git a/tools/node_modules/eslint/node_modules/x-is-function/package.json b/tools/node_modules/eslint/node_modules/x-is-function/package.json
new file mode 100644
index 0000000000..bbf0a19a6e
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/x-is-function/package.json
@@ -0,0 +1,46 @@
+{
+  "_from": "x-is-function@^1.0.4",
+  "_id": "x-is-function@1.0.4",
+  "_inBundle": false,
+  "_integrity": "sha1-XSlNw9Joy90GJYDgxd93o5HR+h4=",
+  "_location": "/x-is-function",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "x-is-function@^1.0.4",
+    "name": "x-is-function",
+    "escapedName": "x-is-function",
+    "rawSpec": "^1.0.4",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.4"
+  },
+  "_requiredBy": [
+    "/unified"
+  ],
+  "_resolved": "https://registry.npmjs.org/x-is-function/-/x-is-function-1.0.4.tgz",
+  "_shasum": "5d294dc3d268cbdd062580e0c5df77a391d1fa1e",
+  "_spec": "x-is-function@^1.0.4",
+  "_where": "/Users/cjihrig/iojs/node/tools/eslint-tmp/node_modules/eslint/node_modules/unified",
+  "author": {
+    "name": "@serapath"
+  },
+  "bugs": {
+    "url": "https://github.com/serapath/x-is-function/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Simple function test",
+  "homepage": "https://github.com/serapath/x-is-function#readme",
+  "license": "MIT",
+  "main": "index.js",
+  "name": "x-is-function",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/serapath/x-is-function.git"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "version": "1.0.4"
+}