1 files changed, 24 insertions, 0 deletions
diff --git a/node_modules/postcss-minify-selectors/src/lib/canUnquote.js b/node_modules/postcss-minify-selectors/src/lib/canUnquote.js
new file mode 100644
index 00000000..aeefa171
--- /dev/null
+++ b/node_modules/postcss-minify-selectors/src/lib/canUnquote.js
@@ -0,0 +1,24 @@
+'use strict';
+/**
+ * Can unquote attribute detection from mothereff.in
+ * Copyright Mathias Bynens <https://mathiasbynens.be/>
+ * https://github.com/mathiasbynens/mothereff.in
+ */
+const escapes = /\\([0-9A-Fa-f]{1,6})[ \t\n\f\r]?/g;
+const range =
+  // eslint-disable-next-line no-control-regex
+  /[\u0000-\u002c\u002e\u002f\u003A-\u0040\u005B-\u005E\u0060\u007B-\u009f]/;
+
+/**
+ * @param {string} value
+ * @return {boolean}
+ */
+module.exports = function canUnquote(value) {
+  if (value === '-' || value === '') {
+    return false;
+  }
+
+  value = value.replace(escapes, 'a').replace(/\\./g, 'a');
+
+  return !(range.test(value) || /^(?:-?\d|--)/.test(value));
+};