fix: add retrieve via packageNames param

package.json

@@ -15,8 +15,8 @@
   "devDependencies": {
     "@oclif/dev-cli": "^1",
     "@oclif/plugin-command-snapshot": "^2.0.0",
-    "@salesforce/dev-config": "^2.1.0",
     "@salesforce/cli-plugins-testkit": "^0.0.8",
+    "@salesforce/dev-config": "^2.1.0",
     "@salesforce/dev-scripts": "^0.7.0",
     "@salesforce/plugin-command-reference": "^1.3.0",
     "@salesforce/prettier-config": "^0.0.2",
@@ -25,24 +25,24 @@
     "@typescript-eslint/parser": "^4.2.0",
     "chai": "^4.2.0",
     "cz-conventional-changelog": "^3.3.0",
-    "eslint": "^7.20.0",
+    "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.11.0",
     "eslint-config-salesforce": "^0.1.0",
     "eslint-config-salesforce-license": "^0.1.0",
     "eslint-config-salesforce-typescript": "^0.2.0",
     "eslint-plugin-header": "^3.0.0",
     "eslint-plugin-import": "^2.20.2",
-    "eslint-plugin-jsdoc": "^32.0.2",
+    "eslint-plugin-jsdoc": "^27.0.3",
     "eslint-plugin-prettier": "^3.1.3",
     "husky": "^4.2.5",
     "lint-staged": "^10.2.2",
-    "mocha": "^8.3.0",
+    "mocha": "^7.2.0",
     "nyc": "^15.1.0",
     "prettier": "^2.0.5",
-    "pretty-quick": "^3.1.0",
+    "pretty-quick": "^2.0.1",
     "shx": "0.3.3",
     "sinon": "^9.0.2",
-    "ts-node": "^9.1.1",
+    "ts-node": "^8.10.2",
     "typescript": "^4.1.3"
   },
   "config": {

src/commands/force/source/retrieve.ts

@@ -76,10 +76,7 @@ export class retrieve extends SourceCommand {
         usernameOrConnection: this.org.getUsername(),
         merge: true,
         output: (this.flags.sourcepath as string) ?? defaultPackage.path,
-        // TODO: fix this once wait has been updated in library
-        // wait: (this.flags.wait as Duration).milliseconds,
-        // TODO: implement retrieve via package name
-        // package: options.packagenames
+        packageNames: asArray<string>(this.flags.packagenames),
       })
       .start();
 
@@ -89,6 +86,7 @@ export class retrieve extends SourceCommand {
     if (results.status === 'InProgress') {
       throw new SfdxError(messages.getMessage('retrieveTimeout', [(this.flags.wait as Duration).minutes]));
     }
+    this.ux.logJson(mdapiResult.getFileResponses());
     // this.printTable(results, true);
 
     return results;

src/sourceCommand.ts

@@ -42,8 +42,8 @@ export abstract class SourceCommand extends SfdxCommand {
     }
 
     if (options.packagenames) {
-      // retrieve only
-      // TODO: @W-8908888@
+      // return ComponentSet and use packageNames in the library via `.retrieve` options
+      setAggregator.push(...new ComponentSet([]));
     }
 
     if (options.manifest) {