@nx/js - Migrations

The @nx/js plugin provides various migrations to help you migrate to newer versions of js projects within your Nx workspace. Below is a complete reference for all available migrations.

21.5.x

`migrate-development-custom-condition`

Version: 21.5.0-beta.2

Migrate the legacy ‘development’ custom condition to a workspace-unique custom condition name.

Migrate `development` custom condition to unique workspace-specific name

Replace the TypeScript development custom condition with a unique workspace-specific name to avoid conflicts when consuming packages in other workspaces.

Examples

The migration will update the custom condition name in both tsconfig.base.json and all workspace package.json files that use the development custom condition:

{% tabs %} {% tab label=“Before” %}

{
  "compilerOptions": {
    "customConditions": ["development"]
  }
}

{% /tab %}

{% tab label=“After” %}

{
  "compilerOptions": {
    "customConditions": ["@my-org/source"] // assuming the root package.json name is `@my-org/source`
  }
}

{% /tab %} {% /tabs %}

The migration also updates package.json files that use the development condition in their exports field and point to TypeScript files:

{% tabs %} {% tab label=“Before” %}

{
  "name": "@myorg/my-lib",
  "exports": {
    ".": {
      "development": "./src/index.ts",
      "default": "./dist/index.js"
    }
  }
}

{% /tab %}

{% tab label=“After” %}

{
  "name": "@myorg/my-lib",
  "exports": {
    ".": {
      "@my-org/source": "./src/index.ts",
      "default": "./dist/index.js"
    }
  }
}

{% /tab %} {% /tabs %}

If the custom condition is not set to ["development"] or the package.json’s exports field doesn’t point to TypeScript files, the migration will not modify the configuration:

{% tabs %} {% tab label=“Before” %}

{
  "name": "@myorg/my-lib",
  "exports": {
    ".": {
      "development": "./dist/index.js",
      "default": "./dist/index.js"
    }
  }
}

{% /tab %}

{% tab label=“After” %}

{
  "name": "@myorg/my-lib",
  "exports": {
    ".": {
      "development": "./dist/index.js",
      "default": "./dist/index.js"
    }
  }
}

{% /tab %} {% /tabs %}