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, 50 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/supports-color/index.js b/tools/node_modules/eslint/node_modules/supports-color/index.js
new file mode 100644
index 0000000000..4346e272e1
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/supports-color/index.js
@@ -0,0 +1,50 @@
+'use strict';
+var argv = process.argv;
+
+var terminator = argv.indexOf('--');
+var hasFlag = function (flag) {
+	flag = '--' + flag;
+	var pos = argv.indexOf(flag);
+	return pos !== -1 && (terminator !== -1 ? pos < terminator : true);
+};
+
+module.exports = (function () {
+	if ('FORCE_COLOR' in process.env) {
+		return true;
+	}
+
+	if (hasFlag('no-color') ||
+		hasFlag('no-colors') ||
+		hasFlag('color=false')) {
+		return false;
+	}
+
+	if (hasFlag('color') ||
+		hasFlag('colors') ||
+		hasFlag('color=true') ||
+		hasFlag('color=always')) {
+		return true;
+	}
+
+	if (process.stdout && !process.stdout.isTTY) {
+		return false;
+	}
+
+	if (process.platform === 'win32') {
+		return true;
+	}
+
+	if ('COLORTERM' in process.env) {
+		return true;
+	}
+
+	if (process.env.TERM === 'dumb') {
+		return false;
+	}
+
+	if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
+		return true;
+	}
+
+	return false;
+})();