refactor(discord): dedupe guild listing

src/discord/guilds.ts

@@ -0,0 +1,29 @@
+import { fetchDiscord } from "./api.js";
+import { normalizeDiscordSlug } from "./monitor/allow-list.js";
+
+export type DiscordGuildSummary = {
+  id: string;
+  name: string;
+  slug: string;
+};
+
+export async function listGuilds(
+  token: string,
+  fetcher: typeof fetch,
+): Promise<DiscordGuildSummary[]> {
+  const raw = await fetchDiscord<Array<{ id?: string; name?: string }>>(
+    "/users/@me/guilds",
+    token,
+    fetcher,
+  );
+  return raw
+    .filter(
+      (guild): guild is { id: string; name: string } =>
+        typeof guild.id === "string" && typeof guild.name === "string",
+    )
+    .map((guild) => ({
+      id: guild.id,
+      name: guild.name,
+      slug: normalizeDiscordSlug(guild.name),
+    }));
+}

src/discord/resolve-channels.ts

@@ -1,13 +1,8 @@
 import { fetchDiscord } from "./api.js";
+import { listGuilds, type DiscordGuildSummary } from "./guilds.js";
 import { normalizeDiscordSlug } from "./monitor/allow-list.js";
 import { normalizeDiscordToken } from "./token.js";
 
-type DiscordGuildSummary = {
-  id: string;
-  name: string;
-  slug: string;
-};
-
 type DiscordChannelSummary = {
   id: string;
   name: string;
@@ -73,24 +68,6 @@ function parseDiscordChannelInput(raw: string): {
   return { guild: trimmed, guildOnly: true };
 }
 
-async function listGuilds(token: string, fetcher: typeof fetch): Promise<DiscordGuildSummary[]> {
-  const raw = await fetchDiscord<Array<{ id?: string; name?: string }>>(
-    "/users/@me/guilds",
-    token,
-    fetcher,
-  );
-  return raw
-    .filter(
-      (guild): guild is { id: string; name: string } =>
-        typeof guild.id === "string" && typeof guild.name === "string",
-    )
-    .map((guild) => ({
-      id: guild.id,
-      name: guild.name,
-      slug: normalizeDiscordSlug(guild.name),
-    }));
-}
-
 async function listGuildChannels(
   token: string,
   fetcher: typeof fetch,

src/discord/resolve-users.ts

@@ -1,13 +1,8 @@
 import { fetchDiscord } from "./api.js";
+import { listGuilds, type DiscordGuildSummary } from "./guilds.js";
 import { normalizeDiscordSlug } from "./monitor/allow-list.js";
 import { normalizeDiscordToken } from "./token.js";
 
-type DiscordGuildSummary = {
-  id: string;
-  name: string;
-  slug: string;
-};
-
 type DiscordUser = {
   id: string;
   username: string;
@@ -61,24 +56,6 @@ function parseDiscordUserInput(raw: string): {
   return { userName: trimmed.replace(/^@/, "") };
 }
 
-async function listGuilds(token: string, fetcher: typeof fetch): Promise<DiscordGuildSummary[]> {
-  const raw = await fetchDiscord<Array<{ id?: string; name?: string }>>(
-    "/users/@me/guilds",
-    token,
-    fetcher,
-  );
-  return raw
-    .filter(
-      (guild): guild is { id: string; name: string } =>
-        typeof guild.id === "string" && typeof guild.name === "string",
-    )
-    .map((guild) => ({
-      id: guild.id,
-      name: guild.name,
-      slug: normalizeDiscordSlug(guild.name),
-    }));
-}
-
 function scoreDiscordMember(member: DiscordMember, query: string): number {
   const q = query.toLowerCase();
   const user = member.user;