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, 64 insertions, 0 deletions

diff --git a/tools/node_modules/eslint/node_modules/lodash/_baseSortedIndexBy.js b/tools/node_modules/eslint/node_modules/lodash/_baseSortedIndexBy.js
new file mode 100644
index 0000000000..bb22e36dcd
--- /dev/null
+++ b/tools/node_modules/eslint/node_modules/lodash/_baseSortedIndexBy.js
@@ -0,0 +1,64 @@
+var isSymbol = require('./isSymbol');
+
+/** Used as references for the maximum length and index of an array. */
+var MAX_ARRAY_LENGTH = 4294967295,
+    MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1;
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeFloor = Math.floor,
+    nativeMin = Math.min;
+
+/**
+ * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
+ * which invokes `iteratee` for `value` and each element of `array` to compute
+ * their sort ranking. The iteratee is invoked with one argument; (value).
+ *
+ * @private
+ * @param {Array} array The sorted array to inspect.
+ * @param {*} value The value to evaluate.
+ * @param {Function} iteratee The iteratee invoked per element.
+ * @param {boolean} [retHighest] Specify returning the highest qualified index.
+ * @returns {number} Returns the index at which `value` should be inserted
+ *  into `array`.
+ */
+function baseSortedIndexBy(array, value, iteratee, retHighest) {
+  value = iteratee(value);
+
+  var low = 0,
+      high = array == null ? 0 : array.length,
+      valIsNaN = value !== value,
+      valIsNull = value === null,
+      valIsSymbol = isSymbol(value),
+      valIsUndefined = value === undefined;
+
+  while (low < high) {
+    var mid = nativeFloor((low + high) / 2),
+        computed = iteratee(array[mid]),
+        othIsDefined = computed !== undefined,
+        othIsNull = computed === null,
+        othIsReflexive = computed === computed,
+        othIsSymbol = isSymbol(computed);
+
+    if (valIsNaN) {
+      var setLow = retHighest || othIsReflexive;
+    } else if (valIsUndefined) {
+      setLow = othIsReflexive && (retHighest || othIsDefined);
+    } else if (valIsNull) {
+      setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
+    } else if (valIsSymbol) {
+      setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
+    } else if (othIsNull || othIsSymbol) {
+      setLow = false;
+    } else {
+      setLow = retHighest ? (computed <= value) : (computed < value);
+    }
+    if (setLow) {
+      low = mid + 1;
+    } else {
+      high = mid;
+    }
+  }
+  return nativeMin(high, MAX_ARRAY_INDEX);
+}
+
+module.exports = baseSortedIndexBy;