feat(@angular/cli): initialize a console prompt provider for schematics

Author: clydin

package.json

@@ -69,6 +69,7 @@
     "@types/copy-webpack-plugin": "^4.4.1",
     "@types/express": "^4.16.0",
     "@types/glob": "^5.0.35",
+    "@types/inquirer": "^0.0.42",
     "@types/istanbul": "^0.4.30",
     "@types/jasmine": "^2.8.8",
     "@types/loader-utils": "^1.1.3",

packages/angular/cli/commands/generate-impl.ts

@@ -52,10 +52,11 @@ export class GenerateCommand extends SchematicCommand {
     return this.runSchematic({
       collectionName,
       schematicName,
-      schematicOptions: options,
+      schematicOptions: this.removeLocalOptions(options),
       debug: options.debug,
       dryRun: options.dryRun,
       force: options.force,
+      interactive: options.interactive,
     });
   }
 
@@ -95,4 +96,11 @@ export class GenerateCommand extends SchematicCommand {
       this.logger.info(terminal.cyan(`  ng generate <schematic> --help`));
     }
   }
+
+  private removeLocalOptions(options: any): any {
+    const opts = Object.assign({}, options);
+    delete opts.interactive;
+
+    return opts;
+  }
 }

packages/angular/cli/commands/generate.json

@@ -30,6 +30,11 @@
       "default": false,
       "aliases": ["f"],
       "description": "Forces overwriting of files."
+    },
+    "interactive": {
+      "type": "boolean",
+      "default": "true",
+      "description": "Disables interactive inputs (i.e., prompts)."
     }
   },
   "required": [

packages/angular/cli/commands/new-impl.ts

@@ -50,15 +50,14 @@ export class NewCommand extends SchematicCommand {
     // Ensure skipGit has a boolean value.
     options.skipGit = options.skipGit === undefined ? false : options.skipGit;
 
-    options = this.removeLocalOptions(options);
-
     return this.runSchematic({
       collectionName: collectionName,
       schematicName: this.schematicName,
-      schematicOptions: options,
+      schematicOptions: this.removeLocalOptions(options),
       debug: options.debug,
       dryRun: options.dryRun,
       force: options.force,
+      interactive: options.interactive,
     });
   }
 
@@ -72,6 +71,7 @@ export class NewCommand extends SchematicCommand {
     const opts = Object.assign({}, options);
     delete opts.verbose;
     delete opts.collection;
+    delete opts.interactive;
 
     return opts;
   }

packages/angular/cli/commands/new.json

@@ -33,6 +33,11 @@
       "default": false,
       "aliases": ["v"],
       "description": "Adds more details to output logging."
+    },
+    "interactive": {
+      "type": "boolean",
+      "default": "true",
+      "description": "Disables interactive inputs (i.e., prompts)."
     }
   },
   "required": []

packages/angular/cli/models/schematic-command.ts

@@ -37,6 +37,7 @@ import {
   NodeWorkflow,
   validateOptionsWithSchema,
 } from '@angular-devkit/schematics/tools';
+import * as inquirer from 'inquirer';
 import { take } from 'rxjs/operators';
 import { WorkspaceLoader } from '../models/workspace-loader';
 import {
@@ -60,6 +61,7 @@ export interface RunSchematicOptions {
   dryRun: boolean;
   force: boolean;
   showNothingDone?: boolean;
+  interactive?: boolean;
 }
 
 export interface GetOptionsOptions {
@@ -279,6 +281,49 @@ export abstract class SchematicCommand extends Command {
       return undefined;
     });
 
+    if (options.interactive !== false && process.stdout.isTTY) {
+      workflow.registry.usePromptProvider((definitions: Array<schema.PromptDefinition>) => {
+        const questions: inquirer.Questions = definitions.map(definition => {
+          const question: inquirer.Question = {
+            name: definition.id,
+            message: definition.message,
+            default: definition.default,
+          };
+
+          const validator = definition.validator;
+          if (validator) {
+            question.validate = input => validator(input);
+          }
+
+          switch (definition.type) {
+            case 'confirmation':
+              question.type = 'confirm';
+              break;
+            case 'list':
+              question.type = 'list';
+              question.choices = definition.items && definition.items.map(item => {
+                if (typeof item == 'string') {
+                  return item;
+                } else {
+                  return {
+                    name: item.label,
+                    value: item.value,
+                  };
+                }
+              });
+              break;
+            default:
+              question.type = definition.type;
+              break;
+          }
+
+          return question;
+        });
+
+        return inquirer.prompt(questions);
+      });
+    }
+
     workflow.reporter.subscribe((event: DryRunEvent) => {
       nothingDone = false;
 

packages/angular/cli/package.json

@@ -35,9 +35,9 @@
     "@angular-devkit/schematics": "0.0.0",
     "@schematics/angular": "0.0.0",
     "@schematics/update": "0.0.0",
+    "inquirer": "^6.1.0",
     "json-schema-traverse": "^0.4.1",
     "opn": "^5.3.0",
-    "json-schema-traverse": "^0.4.1",
     "rxjs": "^6.0.0",
     "semver": "^5.1.0",
     "symbol-observable": "^1.2.0",