Generator

The generator scans your source for points, then writes a small set of files the app imports at boot: a server points aggregator, a client one, a typed route table, a metadata file, and ambient asset typings. You don't hand-write any of them — you point each output at a path in the engine config, and point0 generate fills it in.

// engine.ts — every generated file is opt-in
export const engine = Engine.create({
  file: import.meta.url,
  pointsGlob: '**/*.{ts,tsx,mdx}',
  generate: {
    meta: './generated/point0/meta.ts',
    assetsTypes: './generated/point0/assets.d.ts',
  },
  server: {
    points: async () => await import('./generated/point0/points.server'),
    generate: { points: './generated/point0/points.server.ts' },
  },
  client: {
    points: async () => await import('./generated/point0/points.client'),
    generate: {
      points: './generated/point0/points.client.ts',
      routes: {
        outfile: './generated/point0/routes.ts',
        origin: 'process.env.CLIENT_URL',
      },
    },
  },
})

Run it with the CLI:

point0 generate       # one-shot: scan points, write the files
point0 generate -w    # ...and keep watching for changes

dev and build run it for you — point0 dev generates once at startup and watches; point0 build always generates first.

The generated files

The generator writes a separate file per output, and only the outputs you name in generate — there are no implicit defaults. The example apps put them all under src/generated/point0/, but the path is yours.

points.server.ts — server points

The server's aggregator: a flat array of every server-side point, static-imported so it all lands in the server bundle.

// generated points.server.ts
import type { PointsDefinition } from '@point0/core'
import { root as root_0, page as page_1, layout as layout_2 } from './file0.js'
export default [root_0, page_1, layout_2] as PointsDefinition<
  (typeof root_0)['Infer']['RequiredCtx'],
  (typeof root_0)['Infer']['Error']
>

A point lands here when it's the root of the scope or has an HTTP endpoint — a query, mutation, or action, or any other point (page, layout, component, provider) that has a .loader. The app feeds it back to the engine:

// engine.ts → server
points: async () => await import('./generated/point0/points.server'),
generate: { points: './generated/point0/points.server.ts' },

SSR changes the contents. With ssr: true every page comes to the server (it gets server-rendered). With ssr: false only pages that have a .loader come — they have an endpoint to fetch; loader-less pages are client-only and stay out.

points.client.ts — client points

The client's aggregator: pages, layouts, and the root for the SPA. By default each point is a lazy dynamic import, so it becomes its own chunk loaded on navigation:

// generated points.client.ts (lazy — the default)
import type { PointsDefinition } from '@point0/core'
import { root as root_0 } from './file0.js'
export default [
  root_0,
  {
    type: 'page',
    name: 'mypage',
    route: '/news',
    polh: false, // prefetch-on-link-hover (from .prefetchPageOnLinkHover)
    point: async () => (await import('./file0.js')).page,
  },
  {
    type: 'layout',
    name: 'mylayout',
    route: '/layout',
    point: async () => (await import('./file0.js')).layout,
  },
] as PointsDefinition<
  (typeof root_0)['Infer']['RequiredCtx'],
  (typeof root_0)['Infer']['Error']
>

Each page record carries its route, its polh flag (the hover-prefetch setting, boolean or a debounce in ms), and any layouts it sits under. The root is always imported statically — it has to be present from the first render.

Set lazy: false and the client file becomes the same static-import shape as the server one — every point in a single bundle, no per-page chunks:

// engine.ts → client
generate: { points: { outfile: './generated/point0/points.client.ts', lazy: false } },

There is no per-page .lazy() method; lazy vs static is a whole-file switch in the codegen config. See the page authoring notes for the trade-off.

routes.ts — the typed route table

Every page route, collected into a Route0 table you import for <Link>s and navigate:

// generated routes.ts
import { Routes } from '@1gr14/route0'

export const routes = Routes.create({
  mypage: '/news',
})

import { routes } from '@/generated/point0/routes'

Only pages with a route are included. A page's .basePath prefix is already folded into its route string. Set an origin and it rides along on the table — a raw expression when it starts with process.env. / import.meta.env. / a backtick, otherwise a quoted string:

generate: { routes: { outfile: './generated/point0/routes.ts', origin: 'process.env.CLIENT_URL' } }
// => Routes.create({ mypage: '/news' }, { origin: process.env.CLIENT_URL })

Route keys are quoted only when they aren't a valid JS identifier (mypage: bare, 'my-page': quoted) — matching Prettier's quoteProps: 'as-needed', so diffs stay clean.

NOTE — routes are emitted as bare path strings, untyped. Typed-search routes are intentionally disabled to avoid a routes.ts → page → Link → routes.ts type cycle, so a page that declares .search() still emits a plain string here.

meta.ts — point metadata for tooling

A full description of every point — including invalid ones — for tools that need to reason about your app without importing it.

// generated meta.ts (engine block)
export default {
  engine: {
    file: '<file>',
    import: async () =>
      (await Engine.findAndImportSelf({ engineFile: '<file>' })).engine,
    server: { scope: 'myroot' },
    clients: [{ scope: 'myroot' }],
  },
  points: [
    {
      scope: 'myroot',
      type: 'page',
      name: 'mypage',
      id: 'myroot:page:mypage',
      tags: ['ideas'],
      description: `...`,
      route: undefined, // or Route0.create(...) when the point has a route
      endpoint: undefined, // or { method, route } for query/mutation/action
      pos: { file: '<file>', line: 5, column: 20 }, // source position
      import: async () => (await import('./file0.js')).page,
      valid: true,
      errors: [],
      ssr: false,
      parents: [],
      layouts: [],
    },
    // ...one entry per point, invalid and plugin points included
  ],
}

The project MCP bin consumes it:

point0-project-mcp --meta ./src/generated/point0/meta.ts

The MCP re-reads the file on every call, so it never serves stale points after a point0 generate.

assets.d.ts — ambient asset typings

Ambient declarations that type imported static assets, so import logo from './logo.png' and its ?url / ?file / ?text / ?raw / ?react forms type correctly:

generate: {
  assetsTypes: './generated/point0/assets.d.ts'
}

// generated assets.d.ts (excerpt)
declare module '*.png' {
  const src: string
  export default src
}
declare module '*.png?url' {
  const src: string
  export default src
}
declare module '*.svg?react' {
  import type { FC, SVGProps } from 'react'
  const ReactComponent: FC<SVGProps<SVGSVGElement>>
  export default ReactComponent
}

The extension list and the bare-import type both default from the general compiler.assets config (defaultMode: 'url' out of the box) — one source of truth — and you can override them per output:

generate: { assetsTypes: { outfile: './generated/point0/assets.d.ts', extensions: ['png', 'svg', 'pdf'] } }

Reference the file from your tsconfig types or include, or with a /// <reference path="..." />. The asset pipeline as a whole is on Assets.

When it regenerates

point0 generate       # one-shot
point0 generate -w    # watch and regenerate on change

• point0 dev generates once at startup, then runs a watcher in parallel. -G / --no-generate skips generation; -W / --no-watch disables watching.
• point0 build always generates first — there is no "build without generate" (skipping it would leave a stale aggregator on disk).
• The watcher follows pointsGlob. Add, edit, or delete a point file and it logs add: page.mypage / remove: page.mypage and rewrites only the affected files.

Two things keep the output stable:

• Idempotent writes. A file is rewritten only when its content actually changes, and points are sorted deterministically — so unrelated edits produce no diff. Writes are atomic (temp file under node_modules/.cache, then renamed).
• Safe on errors. A point with parse or collection errors is logged but doesn't break generation; the previous good point set is kept, so a broken edit never blows away your aggregators.

Hot reload does not need a regenerate — the dev server resolves points from the engine's source, not from the generated file. Generation matters when a point is added or removed, which is exactly what the watcher catches.

NOTE: the generator's watcher is pointsGlob, separate from the server's devWatchGlob (restart trigger) and buildWatchGlob. Vite/expo exclude meta.ts from devWatchGlob because meta changes on every point edit and would otherwise restart the server needlessly.

Gitignored output

Generated code is gitignored — the example apps ignore src/generated wholesale. So a fresh checkout, worktree, or CI run must generate before typechecking, or imports like ./generated/point0/points.client won't resolve. That's what bun run setup does at the repo level (it runs point0 generate per app); per-app, the generate script is wired to point0 generate.

examples/expo is the exception: it has no client generate and commits its points.server.ts, ignoring only meta.ts and the Prisma client.

NOTE: setup is not a CLI command. bun run setup is repo/app package.json orchestration (Prisma generate + point0 generate); the only generator CLI verb is point0 generate.

Reference

CLI

point0 build always generates; it has no skip flag.

Where each output is configured

generate lives in three places, each carrying different outputs:

Each value is either a string (the outfile path) or an object with outfile plus extra keys. Omit generate and nothing is generated — it defaults to [].

Per-output options

The bare-import type (defaultMode — 'url' | 'file' | 'text' | 'react' | false, where false omits the bare declaration) is not a key on the simple object config; in that form it always comes from compiler.assets ('url' out of the box). To set it per output you need the raw array form: generate: [{ what: 'assetsTypes', outfile, defaultMode: 'file' }].

A page record needs a root in the scope; the points and routes outputs throw Root point not found for scope <scope> without one.

Custom outputs

Beyond the named outputs, generate accepts custom tasks for generating your own files from the point set:

• { what: 'customFile', handler, outfile } — handler returns the file content and the generator writes it to outfile atomically, just like the built-ins.
• { what: 'customControlled', handler } — handler writes its own files (no outfile); use it when one task emits several files or a path you compute yourself.

Both handlers receive the same options object and run on every (re)generation:

type Handler = (options: {
  points: CompilerPoint[] // the valid points, after collection
  cwd: string // engine cwd — resolve your output paths against it
  log: LogFn // the generator's logger
  tempDir: string // scratch dir for atomic temp files
  emitPointsImports: (options: {
    points: CompilerPoint[]
    // customControlled also passes the target `outfile` so imports resolve relative to it
  }) => EmitNamedImportsResult // ready-to-write import lines for the given points
}) => /* customFile */ string | Promise<string>
// /* customControlled */ | void | Promise<void>

Each point is a CompilerPoint (exported from @point0/compiler). The fields a handler reads to describe or import a point: id (scope:type:name), scope, type, name, route (or undefined), endpoint ({ method, route } for any point reachable over HTTP — an SSR page always (GET), plus any point with a .loader(): layouts (GET), queries / mutations (POST), infinite-queries, and actions (their declared method); undefined otherwise), tags, description, ssr, layouts, parents, valid (always true here — points holds only valid points), pos ({ file, line, column }), and file (with file.abs, the absolute source path).

// engine.ts → generate
generate: {
  custom: [
    {
      what: 'customFile',
      outfile: './generated/point0/point-ids.ts',
      handler: ({ points }) =>
        `export const pointIds = ${JSON.stringify(points.map((p) => p.id))}`,
    },
  ],
},

Supply them either as the full raw array form (generate: [{ what: 'customFile', … }]) or via a custom array inside the simple object config (generate: { custom: [...] }, and likewise under server.generate / client.generate).

Importing points with emitPointsImports

To emit a file that re-exports or wires up the points, call emitPointsImports instead of writing import lines by hand — it resolves each point's source path relative to your outfile and gives every point a unique local binding. It returns an EmitNamedImportsResult:

Push importLines into the file, then reference each point through its renamedExportName:

// engine.ts → generate
generate: {
  custom: [
    {
      what: 'customFile',
      outfile: './generated/point0/my-points.ts',
      handler: ({ points, emitPointsImports }) => {
        const { importLines, importedPoints } = emitPointsImports({ points })
        const lines = [...importLines]
        for (const { point, renamedExportName } of importedPoints) {
          lines.push(`export const ${point.name}_${point.type} = ${renamedExportName}`)
        }
        return lines.join('\n') + '\n'
      },
    },
  ],
},

Under customControlled the handler also passes the target outfile to emitPointsImports so import paths resolve relative to the file you write.