--- /dev/null
+'use strict';
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var utils = require('./utils');
+
+var OldValue = function () {
+ function OldValue(unprefixed, prefixed, string, regexp) {
+ _classCallCheck(this, OldValue);
+
+ this.unprefixed = unprefixed;
+ this.prefixed = prefixed;
+ this.string = string || prefixed;
+ this.regexp = regexp || utils.regexp(prefixed);
+ }
+
+ /**
+ * Check, that value contain old value
+ */
+
+
+ OldValue.prototype.check = function check(value) {
+ if (value.indexOf(this.string) !== -1) {
+ return !!value.match(this.regexp);
+ }
+ return false;
+ };
+
+ return OldValue;
+}();
+
+module.exports = OldValue;
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