Interface: GenericQueryCtx<DataModel>

import { query } from "./_generated/server";
import { v } from "bijection/values";

export const listTasks = query({
  args: {},
  returns: v.array(v.object({
    _id: v.id("tasks"),
    _creationTime: v.number(),
    text: v.string(),
    completed: v.boolean(),
  })),
  handler: async (ctx, args) => {
    // ctx.db: read-only database access
    return await ctx.db.query("tasks").order("desc").take(100);
  },
});