fix: transform Regex named capture groups for Golang (#1809)

* fix: transform named capture groups for Golang

* chore: enable failing edge-render-getserversideprops test

* fix: transform named capture groups to simple capture groups

Co-authored-by: Matt Kane <matt.kane@netlify.com>

* chore: remove unnecessary escape for linter

* chore: fix prettier style complaint

Co-authored-by: Matt Kane <matt.kane@netlify.com>

Author: orinokai

packages/runtime/src/helpers/edge.ts

@@ -11,7 +11,7 @@ import type { RouteHas } from 'next/dist/lib/load-custom-routes'
 import { outdent } from 'outdent'
 
 import { getRequiredServerFiles, NextConfig } from './config'
-import { makeLocaleOptional, stripLookahead } from './matchers'
+import { makeLocaleOptional, stripLookahead, transformCaptureGroups } from './matchers'
 import { RoutesManifest } from './types'
 
 // This is the format as of next@12.2
@@ -267,7 +267,7 @@ const writeEdgeFunction = async ({
 
   // We add a defintion for each matching path
   return matchers.map((matcher) => {
-    const pattern = stripLookahead(matcher.regexp)
+    const pattern = transformCaptureGroups(stripLookahead(matcher.regexp))
     return { function: name, pattern, name: edgeFunctionDefinition.name, cache }
   })
 }

packages/runtime/src/helpers/matchers.ts

@@ -24,6 +24,9 @@ export const stripLookahead = (regex: string) => {
   }
 }
 
+// The Go regexp lib has alternative syntax for named capture groups
+export const transformCaptureGroups = (regex: string) => regex.replace(/\(\?<\w+>/, '(')
+
 const LOCALIZED_REGEX_PREFIX = '(?:\\/(_next\\/data\\/[^/]{1,}))?(?:\\/([^/.]{1,}))'
 const OPTIONAL_REGEX_PREFIX = '(?:\\/(_next\\/data\\/[^/]{1,}))?(?:\\/([^/.]{1,}))?'