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, 94 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/remark-parse/lib/tokenize/emphasis.js b/tools/node_modules/eslint/node_modules/remark-parse/lib/tokenize/emphasis.js
new file mode 100644
index 0000000000..4624936922
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/remark-parse/lib/tokenize/emphasis.js
@@ -0,0 +1,94 @@
+/**
+ * @author Titus Wormer
+ * @copyright 2015 Titus Wormer
+ * @license MIT
+ * @module remark:parse:tokenize:emphasis
+ * @fileoverview Tokenise emphasis.
+ */
+
+'use strict';
+
+var trim = require('trim');
+var word = require('is-word-character');
+var whitespace = require('is-whitespace-character');
+var locate = require('../locate/emphasis');
+
+module.exports = emphasis;
+emphasis.locator = locate;
+
+var C_ASTERISK = '*';
+var C_UNDERSCORE = '_';
+
+/* Tokenise emphasis. */
+function emphasis(eat, value, silent) {
+  var self = this;
+  var index = 0;
+  var character = value.charAt(index);
+  var now;
+  var pedantic;
+  var marker;
+  var queue;
+  var subvalue;
+  var length;
+  var prev;
+
+  if (character !== C_ASTERISK && character !== C_UNDERSCORE) {
+    return;
+  }
+
+  pedantic = self.options.pedantic;
+  subvalue = character;
+  marker = character;
+  length = value.length;
+  index++;
+  queue = '';
+  character = '';
+
+  if (pedantic && whitespace(value.charAt(index))) {
+    return;
+  }
+
+  while (index < length) {
+    prev = character;
+    character = value.charAt(index);
+
+    if (character === marker && (!pedantic || !whitespace(prev))) {
+      character = value.charAt(++index);
+
+      if (character !== marker) {
+        if (!trim(queue) || prev === marker) {
+          return;
+        }
+
+        if (!pedantic && marker === C_UNDERSCORE && word(character)) {
+          queue += marker;
+          continue;
+        }
+
+        /* istanbul ignore if - never used (yet) */
+        if (silent) {
+          return true;
+        }
+
+        now = eat.now();
+        now.column++;
+        now.offset++;
+
+        return eat(subvalue + queue + marker)({
+          type: 'emphasis',
+          children: self.tokenizeInline(queue, now)
+        });
+      }
+
+      queue += marker;
+    }
+
+    if (!pedantic && character === '\\') {
+      queue += character;
+      character = value.charAt(++index);
+    }
+
+    queue += character;
+    index++;
+  }
+}