The type annotation gymnastics you sometimes have to do when reducing to an object in TypeScript are annoying.
allTasks.reduce((acc, item) => { acc[item.label] = t => t.item.label === item.label; return acc; }, {} as Record<string, (t: typeof tasks[number]) => boolean>)
I agree it's a bit annoying, but a better solution than using `as` is just telling reduce what its generic type should be:
tasks.reduce<Record<string, (t: typeof tasks[number]) => boolean>>((acc, item) => ..., {})
Also imo it's cleaner to reduce to an object with something like this as the callback:
(acc, item) => ({ ...acc, [item.label]: t => t.label === item.label })