Sourced from typeorm's releases.

0.3.0

Changes in the version includes changes from the next branch and typeorm@next version. They were pending their migration from 2018. Finally, they are in the master branch and master version.

Features

• compilation target now is es2020. This requires Node.JS version 14+

• TypeORM now properly works when installed within different node_modules contexts (often happen if TypeORM is a dependency of another library or TypeORM is heavily used in monorepo projects)

• Connection was renamed to DataSource. Old Connection is still there, but now it's deprecated. It will be completely removed in next version. New API:

export const dataSource = new DataSource({
    // ... options ...
})
// load entities, establish db connection, sync schema, etc.
await dataSource.connect()

Previously, you could use new Connection(), createConnection(), getConnectionManager().create(), etc. They all deprecated in favour of new syntax you can see above.

New way gives you more flexibility and simplicity in usage.

• new custom repositories syntax:

export const UserRepository = myDataSource.getRepository(UserEntity).extend({
    findUsersWithPhotos() {
        return this.find({
            relations: {
                photos: true
            }
        })
    }
})

Old ways of custom repository creation were dropped.

• added new option on relation load strategy called relationLoadStrategy. Relation load strategy is used on entity load and determines how relations must be loaded when you query entities and their relations from the database. Used on find* methods and QueryBuilder. Value can be set to join or query.

  • join - loads relations using SQL JOIN expression

... (truncated)

Sourced from typeorm's changelog.

0.3.0 (2022-03-17)

Changes in the version includes changes from the next branch and typeorm@next version. They were pending their migration from 2018. Finally, they are in the master branch and master version.

Features

• compilation target now is es2020. This requires Node.JS version 14+

• TypeORM now properly works when installed within different node_modules contexts (often happen if TypeORM is a dependency of another library or TypeORM is heavily used in monorepo projects)

• Connection was renamed to DataSource. Old Connection is still there, but now it's deprecated. It will be completely removed in next version. New API:

export const dataSource = new DataSource({
    // ... options ...
})
// load entities, establish db connection, sync schema, etc.
await dataSource.connect()

Previously, you could use new Connection(), createConnection(), getConnectionManager().create(), etc. They all deprecated in favour of new syntax you can see above.

New way gives you more flexibility and simplicity in usage.

• new custom repositories syntax:

export const UserRepository = myDataSource.getRepository(UserEntity).extend({
    findUsersWithPhotos() {
        return this.find({
            relations: {
                photos: true
            }
        })
    }
})

Old ways of custom repository creation were dropped.

• added new option on relation load strategy called relationLoadStrategy. Relation load strategy is used on entity load and determines how relations must be loaded when you query entities and their relations from the database. Used on find* methods and QueryBuilder. Value can be set to join or query.

... (truncated)

• 941b584 version bump
• 3b8a031 0.3.0 (#8616)
• 5608956 refactor: remove spaces for consistency (#8751)
• See full diff in compare view

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