From e55a57b808525a6830cbf9c336f7ae221169a3a3 Mon Sep 17 00:00:00 2001
From: "Michael B. Gale" <mbg@github.com>
Date: Wed, 29 Jul 2026 11:21:19 +0100
Subject: [PATCH] Add `RegistryBase` schema and type

---
 lib/entry-points.js      |  6 ++++++
 src/start-proxy/types.ts | 16 +++++++++++-----
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/lib/entry-points.js b/lib/entry-points.js
index 302bff49a..d52d8169c 100644
--- a/lib/entry-points.js
+++ b/lib/entry-points.js
@@ -161989,6 +161989,12 @@ function credentialToStr(credential) {
   }
   return result;
 }
+var registryBaseSchema = {
+  /** The type of the package registry. */
+  type: string,
+  /** Whether the registry replaces the base registry for the ecosystem. */
+  "replaces-base": optional(boolean)
+};
 function getAddressString(address) {
   if (address.url === void 0) {
     return address.host;
diff --git a/src/start-proxy/types.ts b/src/start-proxy/types.ts
index 13369edbf..17803e912 100644
--- a/src/start-proxy/types.ts
+++ b/src/start-proxy/types.ts
@@ -254,13 +254,19 @@ export function credentialToStr(credential: Credential): string {
   return result;
 }
 
-/** A package registry is identified by its type and address. */
-export type Registry = {
+/** The schema for `RegistryBase` objects. */
+export const registryBaseSchema = {
   /** The type of the package registry. */
-  type: string;
+  type: json.string,
   /** Whether the registry replaces the base registry for the ecosystem. */
-  "replaces-base"?: boolean;
-} & Address;
+  "replaces-base": json.optional(json.boolean),
+} as const satisfies json.Schema;
+
+/** Information about a registry, other than its address. */
+export type RegistryBase = json.FromSchema<typeof registryBaseSchema>;
+
+/** A package registry is identified by its type and address. */
+export type Registry = RegistryBase & Address;
 
 // If a registry has an `url`, then that takes precedence over the `host` which may or may
 // not be defined.