refactor(reference): normalize config entries (#28178)

packages/opencode/src/config/reference.ts

@@ -18,6 +18,52 @@ const Local = Schema.Struct({
 })
 
 export const Entry = Schema.Union([Schema.String, Git, Local]).annotate({ identifier: "ReferenceConfigEntry" })
+export type Entry = Schema.Schema.Type<typeof Entry>
 
 export const Info = Schema.Record(Schema.String, Entry).annotate({ identifier: "ReferenceConfig" })
 export type Info = Schema.Schema.Type<typeof Info>
+
+export type NormalizedEntry =
+  | {
+      kind: "local"
+      path: string
+    }
+  | {
+      kind: "git"
+      repository: string
+      branch?: string
+    }
+  | {
+      kind: "invalid"
+      message: string
+    }
+
+export type NormalizedInfo = Record<string, NormalizedEntry>
+
+export function validateAlias(name: string) {
+  if (name.length === 0) return "Reference alias must not be empty"
+  if (/[\/\s`,]/.test(name)) {
+    return "Reference alias must not contain /, whitespace, comma, or backtick"
+  }
+}
+
+export function normalizeEntry(entry: Entry): NormalizedEntry {
+  if (typeof entry === "string") {
+    if (entry.startsWith(".") || entry.startsWith("/") || entry.startsWith("~")) {
+      return { kind: "local", path: entry }
+    }
+    return { kind: "git", repository: entry }
+  }
+
+  if ("path" in entry) return { kind: "local", path: entry.path }
+  return { kind: "git", repository: entry.repository, branch: entry.branch }
+}
+
+export function normalize(info: Info): NormalizedInfo {
+  return Object.fromEntries(
+    Object.entries(info).map(([name, entry]) => {
+      const aliasError = validateAlias(name)
+      return [name, aliasError ? { kind: "invalid" as const, message: aliasError } : normalizeEntry(entry)] as const
+    }),
+  )
+}