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, 60 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/babel-code-frame/README.md b/tools/node_modules/eslint/node_modules/babel-code-frame/README.md
new file mode 100644
index 0000000000..7ef5368d31
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/babel-code-frame/README.md
@@ -0,0 +1,60 @@
+# babel-code-frame
+
+> Generate errors that contain a code frame that point to source locations.
+
+## Install
+
+```sh
+npm install --save-dev babel-code-frame
+```
+
+## Usage
+
+```js
+import codeFrame from 'babel-code-frame';
+
+const rawLines = `class Foo {
+  constructor()
+}`;
+const lineNumber = 2;
+const colNumber = 16;
+
+const result = codeFrame(rawLines, lineNumber, colNumber, { /* options */ });
+
+console.log(result);
+```
+
+```sh
+  1 | class Foo {
+> 2 |   constructor()
+    |                ^
+  3 | }
+```
+
+If the column number is not known, you may pass `null` instead.
+
+## Options
+
+### `highlightCode`
+
+`boolean`, defaults to `false`.
+
+Toggles syntax highlighting the code as JavaScript for terminals.
+
+### `linesAbove`
+
+`number`, defaults to `2`.
+
+Adjust the number of lines to show above the error.
+
+### `linesBelow`
+
+`number`, defaults to `3`.
+
+Adjust the number of lines to show below the error.
+
+### `forceColor`
+
+`boolean`, defaults to `false`.
+
+Enable this to forcibly syntax highlight the code as JavaScript (for non-terminals); overrides `highlightCode`.