REPORT-45698 fix: 兼容fr有的方法

src/core/lodash.js

@@ -1,7 +1,7 @@
 /**
  * @license
  * Lodash (Custom Build) <https://lodash.com/>
- * Build: `lodash core plus="debounce,throttle,get,set,findIndex,findLastIndex,findKey,findLastKey,isArrayLike,invert,invertBy,uniq,uniqBy,omit,omitBy,zip,unzip,rest,range,random,reject,intersection,drop,countBy,union,zipObject,initial,cloneDeep,clamp,isPlainObject,take,takeRight,without,difference,defaultsDeep,trim,merge,groupBy,uniqBy,before,after"`
+ * Build: `lodash core plus="debounce,throttle,get,set,findIndex,findLastIndex,findKey,findLastKey,isArrayLike,invert,invertBy,uniq,uniqBy,omit,omitBy,zip,unzip,rest,range,random,reject,intersection,drop,countBy,union,zipObject,initial,cloneDeep,clamp,isPlainObject,take,takeRight,without,difference,defaultsDeep,trim,merge,groupBy,uniqBy,before,after,unescape"`
  * Copyright JS Foundation and other contributors <https://js.foundation/>
  * Released under MIT license <https://lodash.com/license>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
@@ -117,7 +117,9 @@
       uint32Tag = '[object Uint32Array]';
 
   /** Used to match HTML entities and HTML characters. */
-  var reUnescapedHtml = /[&<>"']/g,
+  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
+      reUnescapedHtml = /[&<>"']/g,
+      reHasEscapedHtml = RegExp(reEscapedHtml.source),
       reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
 
   /** Used to match property names within property paths. */
@@ -232,6 +234,15 @@
     "'": '&#39;'
   };
 
+  /** Used to map HTML entities to characters. */
+  var htmlUnescapes = {
+    '&amp;': '&',
+    '&lt;': '<',
+    '&gt;': '>',
+    '&quot;': '"',
+    '&#39;': "'"
+  };
+
   /** Built-in method references without a dependency on `root`. */
   var freeParseFloat = parseFloat,
       freeParseInt = parseInt;
@@ -958,6 +969,15 @@
       : asciiToArray(string);
   }
 
+  /**
+   * Used by `_.unescape` to convert HTML entities to characters.
+   *
+   * @private
+   * @param {string} chr The matched character to unescape.
+   * @returns {string} Returns the unescaped character.
+   */
+  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);
+
   /**
    * Gets the size of a Unicode `string`.
    *
@@ -9444,6 +9464,32 @@
     return castSlice(strSymbols, start, end).join('');
   }
 
+  /**
+   * The inverse of `_.escape`; this method converts the HTML entities
+   * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
+   * their corresponding characters.
+   *
+   * **Note:** No other HTML entities are unescaped. To unescape additional
+   * HTML entities use a third-party library like [_he_](https://mths.be/he).
+   *
+   * @static
+   * @memberOf _
+   * @since 0.6.0
+   * @category String
+   * @param {string} [string=''] The string to unescape.
+   * @returns {string} Returns the unescaped string.
+   * @example
+   *
+   * _.unescape('fred, barney, &amp; pebbles');
+   * // => 'fred, barney, & pebbles'
+   */
+  function unescape(string) {
+    string = toString(string);
+    return (string && reHasEscapedHtml.test(string))
+      ? string.replace(reEscapedHtml, unescapeHtmlChar)
+      : string;
+  }
+
   /*------------------------------------------------------------------------*/
 
   /**
@@ -9969,6 +10015,7 @@
   lodash.size = size;
   lodash.some = some;
   lodash.trim = trim;
+  lodash.unescape = unescape;
   lodash.uniqueId = uniqueId;
 
   // Add aliases.