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, 19 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/shebang-command/index.js b/tools/node_modules/eslint/node_modules/shebang-command/index.js
new file mode 100644
index 0000000000..2de70b0742
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/shebang-command/index.js
@@ -0,0 +1,19 @@
+'use strict';
+var shebangRegex = require('shebang-regex');
+
+module.exports = function (str) {
+	var match = str.match(shebangRegex);
+
+	if (!match) {
+		return null;
+	}
+
+	var arr = match[0].replace(/#! ?/, '').split(' ');
+	var bin = arr[0].split('/').pop();
+	var arg = arr[1];
+
+	return (bin === 'env' ?
+		arg :
+		bin + (arg ? ' ' + arg : '')
+	);
+};