---
title: "JoinPatterns"
source: "https://github.com/remix-run/remix/blob/8905f3943706e1f53696ab83e70a84873cabfc90/packages/route-pattern/src/lib/types/join.ts#L5"
---

# JoinPatterns

## Summary

Join two pattern source strings together at the type level.

## Signature

```ts
type JoinPatterns<A, B> = string extends A | B ? string : _JoinPatterns<Parse<A>, Parse<B>>

```