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, 106 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/remark-parse/lib/tokenize/code-indented.js b/tools/node_modules/eslint/node_modules/remark-parse/lib/tokenize/code-indented.js
new file mode 100644
index 0000000000..50c581fe26
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/remark-parse/lib/tokenize/code-indented.js
@@ -0,0 +1,106 @@
+/**
+ * @author Titus Wormer
+ * @copyright 2015 Titus Wormer
+ * @license MIT
+ * @module remark:parse:tokenize:code-indented
+ * @fileoverview Tokenise indented code.
+ */
+
+'use strict';
+
+var repeat = require('repeat-string');
+var trim = require('trim-trailing-lines');
+
+module.exports = indentedCode;
+
+var C_NEWLINE = '\n';
+var C_TAB = '\t';
+var C_SPACE = ' ';
+
+var CODE_INDENT_COUNT = 4;
+var CODE_INDENT = repeat(C_SPACE, CODE_INDENT_COUNT);
+
+/* Tokenise indented code. */
+function indentedCode(eat, value, silent) {
+  var index = -1;
+  var length = value.length;
+  var subvalue = '';
+  var content = '';
+  var subvalueQueue = '';
+  var contentQueue = '';
+  var character;
+  var blankQueue;
+  var indent;
+
+  while (++index < length) {
+    character = value.charAt(index);
+
+    if (indent) {
+      indent = false;
+
+      subvalue += subvalueQueue;
+      content += contentQueue;
+      subvalueQueue = '';
+      contentQueue = '';
+
+      if (character === C_NEWLINE) {
+        subvalueQueue = character;
+        contentQueue = character;
+      } else {
+        subvalue += character;
+        content += character;
+
+        while (++index < length) {
+          character = value.charAt(index);
+
+          if (!character || character === C_NEWLINE) {
+            contentQueue = character;
+            subvalueQueue = character;
+            break;
+          }
+
+          subvalue += character;
+          content += character;
+        }
+      }
+    } else if (
+      character === C_SPACE &&
+      value.charAt(index + 1) === character &&
+      value.charAt(index + 2) === character &&
+      value.charAt(index + 3) === character
+    ) {
+      subvalueQueue += CODE_INDENT;
+      index += 3;
+      indent = true;
+    } else if (character === C_TAB) {
+      subvalueQueue += character;
+      indent = true;
+    } else {
+      blankQueue = '';
+
+      while (character === C_TAB || character === C_SPACE) {
+        blankQueue += character;
+        character = value.charAt(++index);
+      }
+
+      if (character !== C_NEWLINE) {
+        break;
+      }
+
+      subvalueQueue += blankQueue + character;
+      contentQueue += character;
+    }
+  }
+
+  if (content) {
+    if (silent) {
+      return true;
+    }
+
+    return eat(subvalue)({
+      type: 'code',
+      lang: null,
+      value: trim(content)
+    });
+  }
+}