feat: Add initial Discord clone application with Convex backend services and Electron React frontend components.

convex/typing.ts

@@ -2,7 +2,8 @@ import { query, mutation, internalMutation } from "./_generated/server";
 import { v } from "convex/values";
 import { internal } from "./_generated/api";
 
-// Start typing indicator
+const TYPING_TTL_MS = 6000;
+
 export const startTyping = mutation({
   args: {
     channelId: v.id("channels"),
@@ -11,9 +12,8 @@ export const startTyping = mutation({
   },
   returns: v.null(),
   handler: async (ctx, args) => {
-    const expiresAt = Date.now() + 6000; // 6 second TTL
+    const expiresAt = Date.now() + TYPING_TTL_MS;
 
-    // Upsert: check if already exists
     const existing = await ctx.db
       .query("typingIndicators")
       .withIndex("by_channel", (q) => q.eq("channelId", args.channelId))
@@ -32,14 +32,11 @@ export const startTyping = mutation({
       });
     }
 
-    // Schedule cleanup
-    await ctx.scheduler.runAfter(6000, internal.typing.cleanExpired, {});
-
+    await ctx.scheduler.runAfter(TYPING_TTL_MS, internal.typing.cleanExpired, {});
     return null;
   },
 });
 
-// Stop typing indicator
 export const stopTyping = mutation({
   args: {
     channelId: v.id("channels"),
@@ -61,7 +58,6 @@ export const stopTyping = mutation({
   },
 });
 
-// Get typing users for a channel (reactive!)
 export const getTyping = query({
   args: { channelId: v.id("channels") },
   returns: v.array(
@@ -79,21 +75,17 @@ export const getTyping = query({
 
     return indicators
       .filter((t) => t.expiresAt > now)
-      .map((t) => ({
-        userId: t.userId,
-        username: t.username,
-      }));
+      .map((t) => ({ userId: t.userId, username: t.username }));
   },
 });
 
-// Internal: clean expired typing indicators
 export const cleanExpired = internalMutation({
   args: {},
   returns: v.null(),
   handler: async (ctx) => {
     const now = Date.now();
-    const all = await ctx.db.query("typingIndicators").collect();
-    for (const t of all) {
+    const expired = await ctx.db.query("typingIndicators").collect();
+    for (const t of expired) {
       if (t.expiresAt <= now) {
         await ctx.db.delete(t._id);
       }