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Typescript scheduled tables fail to generate correctly #4571

@dusk125

Description

@dusk125

I'm having some trouble getting a scheduled table (and its reducer) to build.

If they're defined in the same file (as it shows in the documentation):

// schema.ts
export const user_reservation_cleaner = table(
  {
    name: 'user_reservation_cleaner',
    public: false,
    scheduled: (): any => release_user_reservation,
  },
  {
    name: t.string().primaryKey(),
    scheduled_at: t.scheduleAt(),
  },
)

export const db = schema({user_reservation_cleaner})

export const release_user_reservation = db.reducer(
  { arg: user_reservation_cleaner.rowType },
  (ctx, { arg }) => {
    ctx.db.user_reservation.name.delete(arg.name)
  },
)

Then I receive the following error when running spacetime generate:

Extracting schema from <project>/spacetimedb/dist/bundle.js...                                                                                                                                                       
Error: Uncaught TypeError: Table user_reservation_cleaner defines a schedule, but it seems like the associated function was not exported.
        at resolveSchedules (node_modules/spacetimedb/dist/server/index.mjs:7263:15)
        at [SpacetimeDB.moduleHooks.v2] (node_modules/spacetimedb/dist/server/index.mjs:7291:22)
Error: could not extract schema

Instead, if I separate the reducer into its own file:

// schema.ts
import { release_user_reservation } from './schedule'

export const user_reservation_cleaner = table(
  {
    name: 'user_reservation_cleaner',
    public: false,
    scheduled: (): any => release_user_reservation,
  },
  {
    name: t.string().primaryKey(),
    scheduled_at: t.scheduleAt(),
  },
)

export const db = schema({user_reservation_cleaner})
// schedule.ts
import { db, user_reservation_cleaner } from './schema'

export const release_user_reservation = db.reducer(
  { arg: user_reservation_cleaner.rowType },
  (ctx, { arg }) => {
    ctx.db.user_reservation.name.delete(arg.name)
  },
)

I receive the following error:

[CIRCULAR_DEPENDENCY] Warning: Circular dependency: src/schema.ts -> src/schedule.ts -> src/schema.ts.

Build finished successfully.
Extracting schema from <project>/spacetimedb/dist/bundle.js...                                                                                                                                                                    
Error: Uncaught ReferenceError: Cannot access 'db' before initialization
        at <anonymous> (src/schedule.ts:3:41)
Error: could not extract schema

Not sure if this is a bug, or if I'm doing something wrong, any recommendations would be much appreciated!

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