From 26105034da4fcce7ac883c899d781f016559310d Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Thu, 8 Nov 2018 00:38:48 +0800
Subject: switch to vuepress

---
 node_modules/preserve/index.js | 54 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 node_modules/preserve/index.js

(limited to 'node_modules/preserve/index.js')

diff --git a/node_modules/preserve/index.js b/node_modules/preserve/index.js
new file mode 100644
index 00000000..a6c5d481
--- /dev/null
+++ b/node_modules/preserve/index.js
@@ -0,0 +1,54 @@
+/*!
+ * preserve <https://github.com/jonschlinkert/preserve>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT license.
+ */
+
+'use strict';
+
+/**
+ * Replace tokens in `str` with a temporary, heuristic placeholder.
+ *
+ * ```js
+ * tokens.before('{a\\,b}');
+ * //=> '{__ID1__}'
+ * ```
+ *
+ * @param  {String} `str`
+ * @return {String} String with placeholders.
+ * @api public
+ */
+
+exports.before = function before(str, re) {
+  return str.replace(re, function (match) {
+    var id = randomize();
+    cache[id] = match;
+    return '__ID' + id + '__';
+  });
+};
+
+/**
+ * Replace placeholders in `str` with original tokens.
+ *
+ * ```js
+ * tokens.after('{__ID1__}');
+ * //=> '{a\\,b}'
+ * ```
+ *
+ * @param  {String} `str` String with placeholders
+ * @return {String} `str` String with original tokens.
+ * @api public
+ */
+
+exports.after = function after(str) {
+  return str.replace(/__ID(.{5})__/g, function (_, id) {
+    return cache[id];
+  });
+};
+
+function randomize() {
+  return Math.random().toString().slice(2, 7);
+}
+
+var cache = {};
\ No newline at end of file
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