fix(@angular-devkit/schematics-cli): allow private and reset logging queue

General QoL.

Author: hansl

packages/angular_devkit/schematics_cli/bin/schematics.ts

@@ -36,6 +36,8 @@ function usage(exitCode = 0): never {
     Options:
         --debug             Debug mode. This is true by default if the collection is a relative
                             path (in that case, turn off with --debug=false).
+        --allowPrivate      Allow private schematics to be run from the command line. Default to
+                            false.
         --dry-run           Do not output anything, but instead just show what actions would be
                             performed. Default to true if debug is also true.
         --force             Force overwriting files that would otherwise be an error.
@@ -87,7 +89,15 @@ function parseSchematicName(str: string | null): { collection: string, schematic
 
 
 /** Parse the command line. */
-const booleanArgs = [ 'debug', 'dry-run', 'force', 'help', 'list-schematics', 'verbose' ];
+const booleanArgs = [
+  'allowPrivate',
+  'debug',
+  'dry-run',
+  'force',
+  'help',
+  'list-schematics',
+  'verbose',
+];
 const argv = minimist(process.argv.slice(2), {
   boolean: booleanArgs,
   default: {
@@ -124,6 +134,7 @@ if (argv['list-schematics']) {
 const debug: boolean = argv.debug === null ? isLocalCollection : argv.debug;
 const dryRun: boolean = argv['dry-run'] === null ? debug : argv['dry-run'];
 const force = argv['force'];
+const allowPrivate = argv['allowPrivate'];
 
 /** Create a Virtual FS Host scoped to where the process is being run. **/
 const fsHost = new virtualFs.ScopedHost(new NodeJsSyncHost(), normalize(process.cwd()));
@@ -137,7 +148,7 @@ let nothingDone = true;
 
 // Logging queue that receives all the messages to show the users. This only get shown when no
 // errors happened.
-const loggingQueue: string[] = [];
+let loggingQueue: string[] = [];
 let error = false;
 
 /**
@@ -190,6 +201,7 @@ workflow.lifeCycle.subscribe(event => {
       loggingQueue.forEach(log => logger.info(log));
     }
 
+    loggingQueue = [];
     error = false;
   }
 });
@@ -235,6 +247,7 @@ workflow.execute({
   collection: collectionName,
   schematic: schematicName,
   options: args,
+  allowPrivate: allowPrivate,
   debug: debug,
   logger: logger,
 })