2 files changed, 115 insertions, 0 deletions

diff --git a/packages/turbo-workspaces/src/commands/convert/index.ts b/packages/turbo-workspaces/src/commands/convert/index.ts
new file mode 100644
index 0000000..6cc82fc
--- /dev/null
+++ b/packages/turbo-workspaces/src/commands/convert/index.ts
@@ -0,0 +1,109 @@
+import { ConvertCommandArgument, ConvertCommandOptions } from "./types";
+import inquirer from "inquirer";
+import { Logger } from "../../logger";
+import chalk from "chalk";
+import { getAvailablePackageManagers } from "@turbo/utils";
+import { directoryInfo } from "../../utils";
+import getWorkspaceDetails from "../../getWorkspaceDetails";
+import { PackageManager } from "../../types";
+import { convertProject } from "../../convert";
+
+function isPackageManagerDisabled({
+  packageManager,
+  currentWorkspaceManger,
+  availablePackageManagers,
+}: {
+  packageManager: PackageManager;
+  currentWorkspaceManger: PackageManager;
+  availablePackageManagers: Record<PackageManager, { available: boolean }>;
+}) {
+  if (currentWorkspaceManger === packageManager) {
+    return "already in use";
+  }
+
+  if (!availablePackageManagers[packageManager].available) {
+    return "not installed";
+  }
+
+  return false;
+}
+
+export default async function convertCommand(
+  directory: ConvertCommandArgument,
+  packageManager: ConvertCommandArgument,
+  options: ConvertCommandOptions
+) {
+  const logger = new Logger(options);
+
+  logger.hero();
+  logger.header("Welcome, let's convert your project.");
+  logger.blankLine();
+
+  const directoryAnswer = await inquirer.prompt<{
+    directoryInput: string;
+  }>({
+    type: "input",
+    name: "directoryInput",
+    message: "Where is the root of your repo?",
+    when: !directory,
+    default: ".",
+    validate: (directory: string) => {
+      const { exists, absolute } = directoryInfo({ directory });
+      if (exists) {
+        return true;
+      } else {
+        return `Directory ${chalk.dim(`(${absolute})`)} does not exist`;
+      }
+    },
+    filter: (directory: string) => directory.trim(),
+  });
+
+  const { directoryInput: selectedDirectory = directory } = directoryAnswer;
+  const { exists, absolute: root } = directoryInfo({
+    directory: selectedDirectory,
+  });
+  if (!exists) {
+    console.error(`Directory ${chalk.dim(`(${root})`)} does not exist`);
+    return process.exit(1);
+  }
+
+  const [project, availablePackageManagers] = await Promise.all([
+    getWorkspaceDetails({ root }),
+    getAvailablePackageManagers(),
+  ]);
+
+  const packageManagerAnswer = await inquirer.prompt<{
+    packageManagerInput?: PackageManager;
+  }>({
+    name: "packageManagerInput",
+    type: "list",
+    message: `Convert from ${project.packageManager} workspaces to:`,
+    when:
+      !packageManager ||
+      !Object.keys(availablePackageManagers).includes(packageManager),
+    choices: ["npm", "pnpm", "yarn"].map((p) => ({
+      name: `${p} workspaces`,
+      value: p,
+      disabled: isPackageManagerDisabled({
+        packageManager: p as PackageManager,
+        currentWorkspaceManger: project.packageManager,
+        availablePackageManagers,
+      }),
+    })),
+  });
+  const {
+    packageManagerInput:
+      selectedPackageManager = packageManager as PackageManager,
+  } = packageManagerAnswer;
+
+  await convertProject({
+    project,
+    to: {
+      name: selectedPackageManager,
+      version: availablePackageManagers[selectedPackageManager]
+        .version as string,
+    },
+    logger,
+    options,
+  });
+}
diff --git a/packages/turbo-workspaces/src/commands/convert/types.ts b/packages/turbo-workspaces/src/commands/convert/types.ts
new file mode 100644
index 0000000..a7b9deb
--- /dev/null
+++ b/packages/turbo-workspaces/src/commands/convert/types.ts
@@ -0,0 +1,6 @@
+export type ConvertCommandArgument = string;
+export type ConvertCommandOptions = {
+  dry: boolean;
+  force: boolean;
+  skipInstall: boolean;
+};