feat: add ability to specify a package manager of choice

packages/generators/src/init-generator.ts

@@ -99,8 +99,15 @@ export default class InitGenerator extends CustomGenerator {
         }
     }
 
-    public installPlugins(): void {
-        const packager = this.utils.getPackageManager();
+    public async installPlugins(): Promise<void> {
+        const { packager } = await Question.List(
+            this,
+            "packager",
+            "Pick a package manager:",
+            this.utils.getAvailableInstallers(),
+            "npm",
+            false,
+        );
         const opts: {
             dev?: boolean;
             "save-dev"?: boolean;

packages/webpack-cli/lib/utils/get-available-installers.js

@@ -0,0 +1,25 @@
+const { sync } = require("execa");
+
+const utils = require("./");
+
+function isPmInstalled(packageManager) {
+    try {
+        sync(packageManager, ["--version"]);
+        return packageManager;
+    } catch (err) {
+        return false;
+    }
+}
+
+function getAvailableInstallers() {
+    const installers = ["npm", "yarn", "pnpm"];
+    const availableInstallers = installers.filter((installer) => isPmInstalled(installer));
+
+    if (!availableInstallers.length) {
+        utils.logger.error("No package manager found.");
+        process.exit(2);
+    }
+    return availableInstallers;
+}
+
+module.exports = getAvailableInstallers;

packages/webpack-cli/lib/utils/index.js

@@ -23,6 +23,10 @@ module.exports = {
         return require("./dynamic-import-loader");
     },
 
+    get getAvailableInstallers() {
+        return require("./get-available-installers");
+    },
+
     get getPackageManager() {
         return require("./get-package-manager");
     },