add hw2

node_modules/@antfu/install-pkg/dist/index.js

@@ -0,0 +1,96 @@
+// src/detect.ts
+import process from "node:process";
+import { detect } from "package-manager-detector/detect";
+async function detectPackageManager(cwd = process.cwd()) {
+  const result = await detect({
+    cwd,
+    onUnknown(packageManager) {
+      console.warn("[@antfu/install-pkg] Unknown packageManager:", packageManager);
+      return void 0;
+    }
+  });
+  return result?.agent || null;
+}
+
+// src/install.ts
+import { existsSync } from "node:fs";
+import { resolve } from "node:path";
+import process2 from "node:process";
+import { x } from "tinyexec";
+async function installPackage(names, options = {}) {
+  const detectedAgent = options.packageManager || await detectPackageManager(options.cwd) || "npm";
+  const [agent] = detectedAgent.split("@");
+  if (!Array.isArray(names))
+    names = [names];
+  const args = (typeof options.additionalArgs === "function" ? options.additionalArgs(agent, detectedAgent) : options.additionalArgs) || [];
+  if (options.preferOffline) {
+    if (detectedAgent === "yarn@berry")
+      args.unshift("--cached");
+    else
+      args.unshift("--prefer-offline");
+  }
+  if (agent === "pnpm") {
+    args.unshift(
+      /**
+       * Prevent pnpm from removing installed devDeps while `NODE_ENV` is `production`
+       * @see https://pnpm.io/cli/install#--prod--p
+       */
+      "--prod=false"
+    );
+    if (existsSync(resolve(options.cwd ?? process2.cwd(), "pnpm-workspace.yaml"))) {
+      args.unshift("-w");
+    }
+  }
+  return x(
+    agent,
+    [
+      agent === "yarn" ? "add" : "install",
+      options.dev ? "-D" : "",
+      ...args,
+      ...names
+    ].filter(Boolean),
+    {
+      nodeOptions: {
+        stdio: options.silent ? "ignore" : "inherit",
+        cwd: options.cwd
+      },
+      throwOnError: true
+    }
+  );
+}
+
+// src/uninstall.ts
+import { existsSync as existsSync2 } from "node:fs";
+import process3 from "node:process";
+import { resolve as resolve2 } from "node:path";
+import { x as x2 } from "tinyexec";
+async function uninstallPackage(names, options = {}) {
+  const detectedAgent = options.packageManager || await detectPackageManager(options.cwd) || "npm";
+  const [agent] = detectedAgent.split("@");
+  if (!Array.isArray(names))
+    names = [names];
+  const args = options.additionalArgs || [];
+  if (agent === "pnpm" && existsSync2(resolve2(options.cwd ?? process3.cwd(), "pnpm-workspace.yaml")))
+    args.unshift("-w");
+  return x2(
+    agent,
+    [
+      agent === "yarn" ? "remove" : "uninstall",
+      options.dev ? "-D" : "",
+      ...args,
+      ...names
+    ].filter(Boolean),
+    {
+      nodeOptions: {
+        stdio: options.silent ? "ignore" : "inherit",
+        cwd: options.cwd
+      },
+      throwOnError: true
+    }
+  );
+}
+export {
+  detectPackageManager,
+  installPackage,
+  uninstallPackage
+};