refactor(@angular-devkit/schematics): add standardFormats array

Author: filipesilva

packages/angular_devkit/schematics/src/formats/index.ts

@@ -6,6 +6,16 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-export * from './app-name';
-export * from './html-selector';
-export * from './path';
+import { schema } from '@angular-devkit/core';
+import { appNameFormat } from './app-name';
+export { appNameFormat } from './app-name';
+import { htmlSelectorFormat } from './html-selector';
+export { htmlSelectorFormat } from './html-selector';
+import { pathFormat } from './path';
+export { pathFormat } from './path';
+
+export const standardFormats: schema.SchemaFormat[] = [
+  appNameFormat,
+  htmlSelectorFormat,
+  pathFormat,
+];

packages/angular_devkit/schematics_cli/bin/schematics.ts

@@ -129,12 +129,7 @@ const engine = new SchematicEngine(engineHost);
 
 
 // Add support for schemaJson.
-const schemaFormats = [
-  formats.appNameFormat,
-  formats.htmlSelectorFormat,
-  formats.pathFormat,
-];
-const registry = new schema.CoreSchemaRegistry(schemaFormats);
+const registry = new schema.CoreSchemaRegistry(formats.standardFormats);
 engineHost.registerOptionsTransform(validateOptionsWithSchema(registry));