Index: node_modules/autoprefixer/lib/old-value.js
===================================================================
--- node_modules/autoprefixer/lib/old-value.js	(revision 2058e5c694bb6097866a5fe6503c519e8f74970f)
+++ node_modules/autoprefixer/lib/old-value.js	(revision 2058e5c694bb6097866a5fe6503c519e8f74970f)
@@ -0,0 +1,22 @@
+let utils = require('./utils')
+
+class OldValue {
+  constructor(unprefixed, prefixed, string, regexp) {
+    this.unprefixed = unprefixed
+    this.prefixed = prefixed
+    this.string = string || prefixed
+    this.regexp = regexp || utils.regexp(prefixed)
+  }
+
+  /**
+   * Check, that value contain old value
+   */
+  check(value) {
+    if (value.includes(this.string)) {
+      return !!value.match(this.regexp)
+    }
+    return false
+  }
+}
+
+module.exports = OldValue