tldraw/packages/tlschema
Mitja Bezenšek 9915f2b0f6
Fix migrations. (#2302)
Fix `instance_page_state` migrations. We discovered this in a file that
a user sent.

I updated the existing migration since it caused data loss. It looks
like we had a few migrations dealing with `croppingShapeId`:
- First we added the prop with the name `croppingShapeId` and value of
`null` (`AddCroppingId` migration)
- We then have a dummy migration, which doesn't change anything
(`RenameProperties` migration)
- We then override the existing value of `croppingShapeId` with an
non-existent property `croppingId`. This clears out the value and leads
to data loss. (`RenamePropertiesAgain` migration).

So we now avoid that by first looking at `croppingShapeId`, but we still
keep the `croppingId` as a fallback. Felt safer this way.


### Change Type

- [x] `patch` — Bug fix
- [ ] `minor` — New feature
- [ ] `major` — Breaking change
- [ ] `dependencies` — Changes to package dependencies[^1]
- [ ] `documentation` — Changes to the documentation only[^2]
- [ ] `tests` — Changes to any test code only[^2]
- [ ] `internal` — Any other changes that don't affect the published
package[^2]
- [ ] I don't know

[^1]: publishes a `patch` release, for devDependencies use `internal`
[^2]: will not publish a new version


### Release Notes

- Fix migrations of `instance_page_state`.
2023-12-07 13:23:22 +00:00
..
api [improvements] arrows x enclosing shapes x precision. (#2265) 2023-12-01 21:34:12 +00:00
src Fix migrations. (#2302) 2023-12-07 13:23:22 +00:00
api-extractor.json transfer-out: transfer out 2023-04-25 12:01:25 +01:00
api-report.md [improvements] arrows x enclosing shapes x precision. (#2265) 2023-12-01 21:34:12 +00:00
CHANGELOG.md Update CHANGELOG.md [skip ci] 2023-11-10 10:49:37 +00:00
LICENSE transfer-out: transfer out 2023-04-25 12:01:25 +01:00
package.json Add prettier caching (#2212) 2023-11-14 09:06:52 +00:00
README.md TLSchema readme (#1506) 2023-06-03 08:24:58 +00:00
tsconfig.json Rename tlstore to store (#1507) 2023-06-03 08:59:04 +00:00

@tldraw/tlschema

This package houses type definitions, schema migrations, and other type metadata for the tldraw editor's default persisted data.

There are three main kinds of types:

  • Record types

    These are root record types added to the Store class. They are defined in the ./src/records directory.

  • Shape types

    These are subtypes of the root TLShape record type. They allow specifying a unique name and custom props for a particular kind of shape.

  • Asset types

    These are subtypes of the root TLAsset record type. They allow specifying a unique name and custom props for a particular kind of asset.

Adding migrations

If you make any kind of change to any persisted data shape in this package, you must add migrations that are able to convert old versions to new versions, and vice-versa.

If you are making a change that affects the structure of a record, shape, or asset, update the migrations in the same file as the record, shape, or asset is defined.

If you are making a change that affects the structure of the store (e.g. renaming or deleting a type, consolidating two shape types into one, etc), add your changes in the migrations in schema.ts.

After making your changes, add a new version number, using a meaninful name. For example, if you add a new property to the TLShape type called ownerId that points to a user, you might do this:

In TLShape.ts

 const Versions = {
   RemoveSomeProp: 1,
+  AddOwnerId: 2,
 } as const

and then in the TLShape type

   x: number
   y: number
+  ownerId: ID<TLUser> | null
   props: Props
   parentId: ID<TLShape> | ID<TLPage>

and then adding a migration:

 export const shapeTypeMigrations = defineMigrations({
   currentVersion: Versions.Initial,
   firstVersion: Versions.Initial,
   migrators: {
+    [Versions.AddOwnerId]: {
+      // add ownerId property
+      up: (shape) => ({...shape, ownerId: null}),
+      // remove ownerId property
+      down: ({ownerId, ...shape}) => shape,
+    }
   },

After you've added your migration, make sure to add a test for it in src/migrations.test.ts. It will complain if you do not!

License

The source code in this repository (as well as our 2.0+ distributions and releases) are currently licensed under Apache-2.0. These licenses are subject to change in our upcoming 2.0 release. If you are planning to use tldraw in a commercial product, please reach out at hello@tldraw.com.