feat(core): add metagenerator for convert-to-inferred (#27672)

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## Current Behavior
The DX to migrate to project crystal isn't great right now - people have
to run `convert-to-inferred` generators manually.

## Expected Behavior
We should provide a smoother way to migrate, so we introduced an
`@nx/workspace:infer-targets` generator that can handle multiple
conversions at once, either for the whole workspace or at a project
level.

---------

Co-authored-by: Jack Hsu <[email protected]>

docs/generated/manifests/menus.json

@@ -10391,6 +10391,14 @@
                 "children": [],
                 "isExternal": false,
                 "disableCollapsible": false
+              },
+              {
+                "id": "infer-targets",
+                "path": "/nx-api/workspace/generators/infer-targets",
+                "name": "infer-targets",
+                "children": [],
+                "isExternal": false,
+                "disableCollapsible": false
               }
             ],
             "isExternal": false,

docs/generated/manifests/nx-api.json

@@ -3487,6 +3487,15 @@
         "originalFilePath": "/packages/workspace/src/generators/ci-workflow/schema.json",
         "path": "/nx-api/workspace/generators/ci-workflow",
         "type": "generator"
+      },
+      "/nx-api/workspace/generators/infer-targets": {
+        "description": "Convert Nx projects to use inferred targets.",
+        "file": "generated/packages/workspace/generators/infer-targets.json",
+        "hidden": false,
+        "name": "infer-targets",
+        "originalFilePath": "/packages/workspace/src/generators/infer-targets/schema.json",
+        "path": "/nx-api/workspace/generators/infer-targets",
+        "type": "generator"
       }
     },
     "path": "/nx-api/workspace"

docs/generated/packages-metadata.json

@@ -3451,6 +3451,15 @@
         "originalFilePath": "/packages/workspace/src/generators/ci-workflow/schema.json",
         "path": "workspace/generators/ci-workflow",
         "type": "generator"
+      },
+      {
+        "description": "Convert Nx projects to use inferred targets.",
+        "file": "generated/packages/workspace/generators/infer-targets.json",
+        "hidden": false,
+        "name": "infer-targets",
+        "originalFilePath": "/packages/workspace/src/generators/infer-targets/schema.json",
+        "path": "workspace/generators/infer-targets",
+        "type": "generator"
       }
     ],
     "githubRoot": "https://github.com/nrwl/nx/blob/master",

docs/generated/packages/workspace/generators/infer-targets.json

@@ -0,0 +1,35 @@
+{
+  "name": "infer-targets",
+  "factory": "./src/generators/infer-targets/infer-targets",
+  "schema": {
+    "$schema": "https://json-schema.org/schema",
+    "$id": "InferTargets",
+    "title": "",
+    "type": "object",
+    "description": "Convert Nx projects to use inferred targets.",
+    "properties": {
+      "project": {
+        "type": "string",
+        "description": "The project to convert to use inferred targets.",
+        "x-priority": "important"
+      },
+      "plugins": {
+        "type": "array",
+        "description": "The plugins used to infer targets. For example @nx/eslint or @nx/jest",
+        "items": { "type": "string" }
+      },
+      "skipFormat": {
+        "type": "boolean",
+        "description": "Whether to format files.",
+        "default": false
+      }
+    },
+    "presets": []
+  },
+  "description": "Convert Nx projects to use inferred targets.",
+  "implementation": "/packages/workspace/src/generators/infer-targets/infer-targets.ts",
+  "aliases": [],
+  "hidden": false,
+  "path": "/packages/workspace/src/generators/infer-targets/schema.json",
+  "type": "generator"
+}

docs/shared/recipes/running-tasks/convert-to-inferred.md

@@ -19,7 +19,17 @@ For the best experience, we recommend that you [migrate](/features/automate-upda
 npx nx migrate latest
 ```
 
-## Migrate a Plugin
+## Migrate All Plugins
+
+You can use the `infer-targets` generator to quickly migrate all available plugins to use inferred tasks. See the sections below for more details on the individual plugins' migration processes.
+
+```shell
+npx nx g infer-targets
+```
+
+The generator will automatically detect all available `convert-to-inferred` generators and run the ones you choose. If you only want to try it on a single project, pass the `--project` option.
+
+## Migrate a Single Plugin
 
 Most of the official plugins come with a `convert-to-inferred` generator. This generator will
 
@@ -42,7 +52,7 @@ None of the above
 For third-party plugins that provide `convert-to-inferred` generators, you should pick the `None of the above` option and type in the name of the package manually. Alternatively, you can also provide the package explicitly with `nx g <plugin>:convert-to-inferred`.
 {% /callout %}
 
-We recommend that you migrate the plugins one at a time, and check that the configurations are correct before continuing to the next plugin. If you only want to try it on a single project, pass the `--project` option.
+We recommend that you check that the configurations are correct before continuing to the next plugin. If you only want to try it on a single project, pass the `--project` option.
 
 ## Understand the Migration Process
 
@@ -96,7 +106,7 @@ For example, if we migrated the `@nx/vite` plugin for a single app (i.e. `nx g @
 You'll notice that the `serve` and `build` tasks are running the [Vite CLI](https://vitejs.dev/guide/cli.html) and there are no references to Nx executors. Since the targets directly invoke the Vite CLI, any options that may be passed to it can be passed via Nx commands. e.g. `nx serve demo --cors --port 8888` enables CORs and uses port `8888` using [Vite CLI options](https://vitejs.dev/guide/cli.html#options)
 The same CLI setup applies to other plugins as well.
 
-- `@nx/cypess` calls the [Cypress CLI](https://docs.cypress.io/guides/guides/command-line)
+- `@nx/cypress` calls the [Cypress CLI](https://docs.cypress.io/guides/guides/command-line)
 - `@nx/playwright` calls the [Playwright CLI](https://playwright.dev/docs/test-cli)
 - `@nx/webpack` calls the [Webpack CLI](https://webpack.js.org/api/cli/)
 - etc.

docs/shared/reference/sitemap.md

@@ -755,3 +755,4 @@
       - [fix-configuration](/nx-api/workspace/generators/fix-configuration)
       - [npm-package](/nx-api/workspace/generators/npm-package)
       - [ci-workflow](/nx-api/workspace/generators/ci-workflow)
+      - [infer-targets](/nx-api/workspace/generators/infer-targets)

e2e/nx/src/workspace.test.ts

@@ -13,11 +13,150 @@ import {
   tmpProjPath,
   uniq,
   updateFile,
+  updateJson,
 } from '@nx/e2e/utils';
 import { join } from 'path';
 
 let proj: string;
 
+describe('@nx/workspace:infer-targets', () => {
+  beforeEach(() => {
+    proj = newProject({
+      packages: ['@nx/playwright', '@nx/remix', '@nx/eslint', '@nx/jest'],
+    });
+  });
+
+  afterEach(() => cleanupProject());
+
+  it('should run or skip conversions depending on whether executors are present', async () => {
+    // default case, everything is generated with crystal, everything should be skipped
+    const remixApp = uniq('remix');
+    runCLI(
+      `generate @nx/remix:app ${remixApp} --dir apps --unitTestRunner jest --e2eTestRunner=playwright --projectNameAndDirectoryFormat=as-provided --no-interactive`
+    );
+
+    const output = runCLI(`generate infer-targets --no-interactive`);
+
+    expect(output).toContain('@nx/remix:convert-to-inferred - Skipped');
+    expect(output).toContain('@nx/playwright:convert-to-inferred - Skipped');
+    expect(output).toContain('@nx/eslint:convert-to-inferred - Skipped');
+    expect(output).toContain('@nx/jest:convert-to-inferred - Skipped');
+
+    // if we make sure there are executors to convert, conversions will run
+    updateJson('nx.json', (json) => {
+      json.plugins = [];
+      return json;
+    });
+
+    updateJson(join('apps', remixApp, 'project.json'), (json) => {
+      json.targets = {
+        build: {
+          executor: '@nx/remix:build',
+        },
+        lint: {
+          executor: '@nx/eslint:lint',
+        },
+      };
+      return json;
+    });
+
+    const output2 = runCLI(`generate infer-targets --no-interactive`);
+
+    expect(output2).toContain('@nx/remix:convert-to-inferred - Success');
+    expect(output2).toContain('@nx/eslint:convert-to-inferred - Success');
+  });
+
+  it('should run or skip only specific conversions if --plugins is passed', async () => {
+    // default case, everything is generated with crystal, relevant plugins should be skipped
+    const remixApp = uniq('remix');
+    runCLI(
+      `generate @nx/remix:app ${remixApp} --dir apps --unitTestRunner jest --e2eTestRunner=playwright --projectNameAndDirectoryFormat=as-provided --no-interactive`
+    );
+
+    const output = runCLI(
+      `generate infer-targets --plugins=@nx/eslint,@nx/jest --no-interactive`
+    );
+
+    expect(output).toContain('@nx/eslint:convert-to-inferred - Skipped');
+    expect(output).toContain('@nx/jest:convert-to-inferred - Skipped');
+
+    expect(output).not.toContain('@nx/remix');
+    expect(output).not.toContain('@nx/playwright');
+
+    // if we make sure there are executors to convert, relevant conversions will run
+    updateJson('nx.json', (json) => {
+      json.plugins = [];
+      return json;
+    });
+
+    updateJson(join('apps', remixApp, 'project.json'), (json) => {
+      json.targets = {
+        build: {
+          executor: '@nx/remix:build',
+        },
+        lint: {
+          executor: '@nx/eslint:lint',
+        },
+      };
+      return json;
+    });
+
+    const output2 = runCLI(
+      `generate infer-targets --plugins=@nx/remix,@nx/eslint --no-interactive`
+    );
+
+    expect(output2).toContain('@nx/remix:convert-to-inferred - Success');
+    expect(output2).toContain('@nx/eslint:convert-to-inferred - Success');
+
+    expect(output2).not.toContain('@nx/jest');
+    expect(output2).not.toContain('@nx/playwright');
+  });
+
+  it('should run only specific conversions for a specific project if --project is passed', async () => {
+    // even if we make sure there are executors for remix & remix-e2e, only remix conversions will run with --project option
+    const remixApp = uniq('remix');
+    runCLI(
+      `generate @nx/remix:app ${remixApp} --dir apps --unitTestRunner jest --e2eTestRunner=playwright --projectNameAndDirectoryFormat=as-provided --no-interactive`
+    );
+
+    updateJson('nx.json', (json) => {
+      json.plugins = [];
+      return json;
+    });
+
+    updateJson(join('apps', remixApp, 'project.json'), (json) => {
+      json.targets = {
+        build: {
+          executor: '@nx/remix:build',
+        },
+        lint: {
+          executor: '@nx/eslint:lint',
+        },
+      };
+      return json;
+    });
+
+    updateJson(join('apps', `${remixApp}-e2e`, 'project.json'), (json) => {
+      json.targets = {
+        e2e: {
+          executor: '@nx/playwright:playwright',
+        },
+      };
+      return json;
+    });
+
+    const output2 = runCLI(
+      `generate infer-targets --project ${remixApp}  --no-interactive`
+    );
+
+    expect(output2).toContain('@nx/remix:convert-to-inferred - Success');
+    expect(output2).toContain('@nx/eslint:convert-to-inferred - Success');
+
+    expect(output2).toContain('@nx/jest:convert-to-inferred - Skipped');
+    expect(output2).toContain('@nx/playwright:convert-to-inferred - Skipped');
+  });
+});
+
 describe('@nx/workspace:convert-to-monorepo', () => {
   beforeEach(() => {
     proj = newProject({ packages: ['@nx/react', '@nx/js'] });

packages/cypress/src/generators/convert-to-inferred/convert-to-inferred.ts

@@ -4,7 +4,10 @@ import {
   type TargetConfiguration,
   type Tree,
 } from '@nx/devkit';
-import { migrateProjectExecutorsToPlugin } from '@nx/devkit/src/generators/plugin-migrations/executor-to-plugin-migrator';
+import {
+  migrateProjectExecutorsToPlugin,
+  NoTargetsToMigrateError,
+} from '@nx/devkit/src/generators/plugin-migrations/executor-to-plugin-migrator';
 import {
   processTargetOutputs,
   toProjectRelativePath,
@@ -46,7 +49,7 @@ export async function convertToInferred(tree: Tree, options: Schema) {
     );
 
   if (migratedProjects.size === 0) {
-    throw new Error('Could not find any targets to migrate.');
+    throw new NoTargetsToMigrateError();
   }
 
   if (!options.skipFormat) {

packages/detox/src/generators/convert-to-inferred/convert-to-inferred.ts

@@ -7,7 +7,10 @@ import {
   updateNxJson,
 } from '@nx/devkit';
 import { AggregatedLog } from '@nx/devkit/src/generators/plugin-migrations/aggregate-log-util';
-import { migrateProjectExecutorsToPluginV1 } from '@nx/devkit/src/generators/plugin-migrations/executor-to-plugin-migrator';
+import {
+  migrateProjectExecutorsToPluginV1,
+  NoTargetsToMigrateError,
+} from '@nx/devkit/src/generators/plugin-migrations/executor-to-plugin-migrator';
 import { createNodes } from '../../plugins/plugin';
 import { processBuildOptions } from './lib/process-build-options';
 import { postTargetTransformer } from './lib/post-target-transformer';
@@ -97,7 +100,7 @@ export async function convertToInferred(tree: Tree, options: Schema) {
   updateNxJson(tree, nxJson);
 
   if (migratedProjects.size === 0) {
-    throw new Error('Could not find any targets to migrate.');
+    throw new NoTargetsToMigrateError();
   }
 
   if (!options.skipFormat) {