feat: support regex matcher with a regexp object

src/v3/matchers.ts

@@ -216,7 +216,21 @@ export function string(str: string) {
  * @param pattern Regular Expression to match
  * @param str Example value
  */
-export function regex(pattern: string, str: string) {
+export function regex(pattern: string, str: string): any
+/**
+ * Value that must match the given regular expression
+ * @param pattern Regular Expression to match
+ * @param str Example value
+ */
+export function regex(pattern: RegExp, str: string): any
+export function regex(pattern: any, str: string): any {
+  if (pattern instanceof RegExp) {
+    return {
+      "pact:matcher:type": "regex",
+      regex: pattern.toString(),
+      value: str,
+    }
+  }
   return {
     "pact:matcher:type": "regex",
     regex: pattern,