Bump to v4.0.0.

unescape.js

@@ -0,0 +1,33 @@
+import toString from './toString';
+import unescapeHtmlChar from './internal/unescapeHtmlChar';
+
+/** Used to match HTML entities and HTML characters. */
+var reEscapedHtml = /&(?:amp|lt|gt|quot|#39|#96);/g,
+    reHasEscapedHtml = RegExp(reEscapedHtml.source);
+
+/**
+ * The inverse of `_.escape`; this method converts the HTML entities
+ * `&`, `<`, `>`, `"`, `'`, and ``` 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 _
+ * @category String
+ * @param {string} [string=''] The string to unescape.
+ * @returns {string} Returns the unescaped string.
+ * @example
+ *
+ * _.unescape('fred, barney, & pebbles');
+ * // => 'fred, barney, & pebbles'
+ */
+function unescape(string) {
+  string = toString(string);
+  return (string && reHasEscapedHtml.test(string))
+    ? string.replace(reEscapedHtml, unescapeHtmlChar)
+    : string;
+}
+
+export default unescape;