feat: init

node_modules/regexp-tree/dist/optimizer/transforms/char-class-classranges-to-chars-transform.js

@@ -0,0 +1,30 @@
+/**
+ * The MIT License (MIT)
+ * Copyright (c) 2017-present Dmitry Soshnikov <dmitry.soshnikov@gmail.com>
+ */
+
+'use strict';
+
+/**
+ * A regexp-tree plugin to simplify character classes
+ * spanning only one or two chars.
+ *
+ * [a-a] -> [a]
+ * [a-b] -> [ab]
+ */
+
+module.exports = {
+  ClassRange: function ClassRange(path) {
+    var node = path.node;
+
+
+    if (node.from.codePoint === node.to.codePoint) {
+
+      path.replace(node.from);
+    } else if (node.from.codePoint === node.to.codePoint - 1) {
+
+      path.getParent().insertChildAt(node.to, path.index + 1);
+      path.replace(node.from);
+    }
+  }
+};