NUEVA BUSQUEDA DE DATOS SRI

node_modules/ejs/lib/utils.js

@@ -25,6 +25,8 @@
 'use strict';
 
 var regExpChars = /[|\\{}()[\]^$+*?.]/g;
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var hasOwn = function (obj, key) { return hasOwnProperty.apply(obj, [key]); };
 
 /**
  * Escape characters reserved in regular expressions.
@@ -97,9 +99,25 @@ exports.escapeXML = function (markup) {
     : String(markup)
       .replace(_MATCH_HTML, encode_char);
 };
-exports.escapeXML.toString = function () {
+
+function escapeXMLToString() {
   return Function.prototype.toString.call(this) + ';\n' + escapeFuncStr;
-};
+}
+
+try {
+  if (typeof Object.defineProperty === 'function') {
+  // If the Function prototype is frozen, the "toString" property is non-writable. This means that any objects which inherit this property
+  // cannot have the property changed using an assignment. If using strict mode, attempting that will cause an error. If not using strict
+  // mode, attempting that will be silently ignored.
+  // However, we can still explicitly shadow the prototype's "toString" property by defining a new "toString" property on this object.
+    Object.defineProperty(exports.escapeXML, 'toString', { value: escapeXMLToString });
+  } else {
+    // If Object.defineProperty() doesn't exist, attempt to shadow this property using the assignment operator.
+    exports.escapeXML.toString = escapeXMLToString;
+  }
+} catch (err) {
+  console.warn('Unable to set escapeXML.toString (is the Function prototype frozen?)');
+}
 
 /**
  * Naive copy of properties from one object to another.
@@ -114,8 +132,16 @@ exports.escapeXML.toString = function () {
  */
 exports.shallowCopy = function (to, from) {
   from = from || {};
-  for (var p in from) {
-    to[p] = from[p];
+  if ((to !== null) && (to !== undefined)) {
+    for (var p in from) {
+      if (!hasOwn(from, p)) {
+        continue;
+      }
+      if (p === '__proto__' || p === 'constructor') {
+        continue;
+      }
+      to[p] = from[p];
+    }
   }
   return to;
 };
@@ -133,10 +159,20 @@ exports.shallowCopy = function (to, from) {
  * @private
  */
 exports.shallowCopyFromList = function (to, from, list) {
-  for (var i = 0; i < list.length; i++) {
-    var p = list[i];
-    if (typeof from[p] != 'undefined') {
-      to[p] = from[p];
+  list = list || [];
+  from = from || {};
+  if ((to !== null) && (to !== undefined)) {
+    for (var i = 0; i < list.length; i++) {
+      var p = list[i];
+      if (typeof from[p] != 'undefined') {
+        if (!hasOwn(from, p)) {
+          continue;
+        }
+        if (p === '__proto__' || p === 'constructor') {
+          continue;
+        }
+        to[p] = from[p];
+      }
     }
   }
   return to;
@@ -165,3 +201,41 @@ exports.cache = {
     this._data = {};
   }
 };
+
+/**
+ * Transforms hyphen case variable into camel case.
+ *
+ * @param {String} string Hyphen case string
+ * @return {String} Camel case string
+ * @static
+ * @private
+ */
+exports.hyphenToCamel = function (str) {
+  return str.replace(/-[a-z]/g, function (match) { return match[1].toUpperCase(); });
+};
+
+/**
+ * Returns a null-prototype object in runtimes that support it
+ *
+ * @return {Object} Object, prototype will be set to null where possible
+ * @static
+ * @private
+ */
+exports.createNullProtoObjWherePossible = (function () {
+  if (typeof Object.create == 'function') {
+    return function () {
+      return Object.create(null);
+    };
+  }
+  if (!({__proto__: null} instanceof Object)) {
+    return function () {
+      return {__proto__: null};
+    };
+  }
+  // Not possible, just pass through
+  return function () {
+    return {};
+  };
+})();
+
+