Removes unneeded escapes

Stefan van den Oord · Stefan van den Oord · commit 77cba157a942 · 2020-06-04T17:08:41.000+02:00
diff --git a/content/posts/2020-05-25-getting-help-from-your-compiler/index.md b/content/posts/2020-05-25-getting-help-from-your-compiler/index.md
@@ -603,7 +603,7 @@ New version:
 
 ```typescript
 const digits = (n: number) =>
-  O.fromPredicate((s: string) => new RegExp(`\^\[0-9\]\{${n}\}\$`).test(s))
+  O.fromPredicate((s: string) => new RegExp(`^[0-9]{${n}}$`).test(s))
 
 const phoneValidator = flow(
   digits(8),
