refactor(ng-fs): spawn visitor for subdirs if an ignore pattern is provided

Author: jackofdiamond5

packages/ng-schematics/src/utils/NgFileSystem.ts

@@ -1,4 +1,4 @@
-import { Tree } from "@angular-devkit/schematics";
+import { DirEntry, FileEntry, Tree } from "@angular-devkit/schematics";
 import { App, FS_TOKEN, FS_TYPE_TOKEN, FsTypes, IFileSystem } from "@igniteui/cli-core";
 
 export class NgTreeFileSystem implements IFileSystem {
@@ -23,23 +23,46 @@ export class NgTreeFileSystem implements IFileSystem {
 	/**
 	 * Returns a list of file paths under a directory based on a match pattern
 	 * @param dirPath Root dir to search in
-	 * @param pattern Supports only recursive wildcard '\*\*\/\*'
-	 * @param ignorePattern Optional pattern to ignore
+	 * @param pattern Supports only recursive wildcard `\*\*\/\*`
+	 * @param ignorePattern Optional pattern to ignore for each subdirectory
 	 */
 	public glob(dirPath: string, pattern: string, ignorePattern?: string): string[] {
 		const dir = this.tree.getDir(dirPath);
 		const entries: string[] = [];
-		pattern = pattern.split("**/*").pop() || pattern;
-
-		dir.visit((_fullPath, entry) => {
-			if (ignorePattern && entry?.path.includes(ignorePattern)) {
-				return;
-			}
+		const wildcard = "**/*";
+		pattern = pattern.split(wildcard).pop() || pattern;
+		ignorePattern = ignorePattern?.split(wildcard).pop() || ignorePattern;
 
+		const visitor = (_fullPath: string, entry?: Readonly<FileEntry>): void => {
 			if (entry?.path.endsWith(pattern)) {
 				entries.push(entry.path);
 			}
-		});
+		};
+		if (ignorePattern) {
+			dir.subfiles.forEach(file => {
+				if (file.endsWith(pattern)) {
+					entries.push(file);
+				}
+			});
+
+			const recurse = (dir: DirEntry): void => {
+				for (const subdirPath of dir.subdirs) {
+					if (!subdirPath.includes(ignorePattern)) {
+						const currDir = dir.dir(subdirPath);
+						if (currDir.subdirs.length) {
+							recurse(currDir);
+							return;
+						}
+						currDir.visit(visitor);
+					}
+				}
+			}
+
+			recurse(dir);
+			return entries;
+		}
+
+		dir.visit(visitor);
 
 		return entries;
 	}