1 files changed, 27 insertions, 0 deletions
diff --git a/node_modules/core-js/internals/string-multibyte.js b/node_modules/core-js/internals/string-multibyte.js
new file mode 100644
index 0000000..c0cf086
--- /dev/null
+++ b/node_modules/core-js/internals/string-multibyte.js
@@ -0,0 +1,27 @@
+var toInteger = require('../internals/to-integer');
+var requireObjectCoercible = require('../internals/require-object-coercible');
+
+// `String.prototype.{ codePointAt, at }` methods implementation
+var createMethod = function (CONVERT_TO_STRING) {
+  return function ($this, pos) {
+    var S = String(requireObjectCoercible($this));
+    var position = toInteger(pos);
+    var size = S.length;
+    var first, second;
+    if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
+    first = S.charCodeAt(position);
+    return first < 0xD800 || first > 0xDBFF || position + 1 === size
+      || (second = S.charCodeAt(position + 1)) < 0xDC00 || second > 0xDFFF
+        ? CONVERT_TO_STRING ? S.charAt(position) : first
+        : CONVERT_TO_STRING ? S.slice(position, position + 2) : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
+  };
+};
+
+module.exports = {
+  // `String.prototype.codePointAt` method
+  // https://tc39.github.io/ecma262/#sec-string.prototype.codepointat
+  codeAt: createMethod(false),
+  // `String.prototype.at` method
+  // https://github.com/mathiasbynens/String.prototype.at
+  charAt: createMethod(true)
+};