fix: .npmrc not written into workspace root

src/commands.ts

@@ -87,12 +87,15 @@ export interface InstallOptions extends BaseOptions {
 }
 
 export async function install(packages: JsrPackage[], options: InstallOptions) {
-  const pkgManager = await getPkgManager(process.cwd(), options.pkgManagerName);
+  const { pkgManager, root } = await getPkgManager(
+    process.cwd(),
+    options.pkgManagerName,
+  );
 
   if (packages.length > 0) {
     if (pkgManager instanceof Bun) {
       // Bun doesn't support reading from .npmrc yet
-      await setupBunfigToml(pkgManager.cwd);
+      await setupBunfigToml(root);
     } else if (pkgManager instanceof YarnBerry) {
       // Yarn v2+ does not read from .npmrc intentionally
       // https://yarnpkg.com/migration/guide#update-your-configuration-to-the-new-settings
@@ -101,7 +104,7 @@ export async function install(packages: JsrPackage[], options: InstallOptions) {
         JSR_NPM_REGISTRY_URL,
       );
     } else {
-      await setupNpmRc(pkgManager.cwd);
+      await setupNpmRc(root);
     }
 
     console.log(`Installing ${kl.cyan(packages.join(", "))}...`);
@@ -111,7 +114,10 @@ export async function install(packages: JsrPackage[], options: InstallOptions) {
 }
 
 export async function remove(packages: JsrPackage[], options: BaseOptions) {
-  const pkgManager = await getPkgManager(process.cwd(), options.pkgManagerName);
+  const { pkgManager } = await getPkgManager(
+    process.cwd(),
+    options.pkgManagerName,
+  );
   console.log(`Removing ${kl.cyan(packages.join(", "))}...`);
   await pkgManager.remove(packages);
 }
@@ -186,7 +192,7 @@ export async function runScript(
   script: string,
   options: BaseOptions,
 ) {
-  const pkgManager = await getPkgManager(cwd, options.pkgManagerName);
+  const { pkgManager } = await getPkgManager(cwd, options.pkgManagerName);
   await pkgManager.runScript(script);
 }
 

src/pkg_manager.ts

@@ -195,27 +195,32 @@ function getPkgManagerFromEnv(value: string): PkgManagerName | null {
 export async function getPkgManager(
   cwd: string,
   pkgManagerName: PkgManagerName | null,
-) {
+): Promise<{ root: string; pkgManager: PackageManager }> {
   const envPkgManager = process.env.npm_config_user_agent;
   const fromEnv = envPkgManager !== undefined
     ? getPkgManagerFromEnv(envPkgManager)
     : null;
 
-  const { projectDir, pkgManagerName: fromLockfile } = await findProjectDir(
-    cwd,
-  );
+  const { projectDir, pkgManagerName: fromLockfile, root } =
+    await findProjectDir(
+      cwd,
+    );
+  const rootPath = root || projectDir;
 
   const result = pkgManagerName || fromEnv || fromLockfile || "npm";
 
+  let pkgManager: PackageManager;
   if (result === "yarn") {
-    return await isYarnBerry(projectDir)
+    pkgManager = await isYarnBerry(projectDir)
       ? new YarnBerry(projectDir)
       : new Yarn(projectDir);
   } else if (result === "pnpm") {
-    return new Pnpm(projectDir);
+    pkgManager = new Pnpm(projectDir);
   } else if (result === "bun") {
-    return new Bun(projectDir);
+    pkgManager = new Bun(projectDir);
+  } else {
+    pkgManager = new Npm(projectDir);
   }
 
-  return new Npm(projectDir);
+  return { root: rootPath, pkgManager };
 }

src/utils.ts

@@ -72,6 +72,7 @@ export interface ProjectInfo {
   projectDir: string;
   pkgManagerName: PkgManagerName | null;
   pkgJsonPath: string | null;
+  root: string | null;
 }
 export async function findProjectDir(
   cwd: string,
@@ -80,6 +81,7 @@ export async function findProjectDir(
     projectDir: cwd,
     pkgManagerName: null,
     pkgJsonPath: null,
+    root: null,
   },
 ): Promise<ProjectInfo> {
   // Ensure we check for `package.json` first as this defines
@@ -92,6 +94,18 @@ export async function findProjectDir(
       result.projectDir = dir;
       result.pkgJsonPath = pkgJsonPath;
     }
+  } else {
+    const pkgJsonPath = path.join(dir, "package.json");
+    if (await fileExists(pkgJsonPath)) {
+      const json = await readJson<PkgJson>(pkgJsonPath);
+      // npm + yarn + bun workspaces
+      if (Array.isArray(json.workspaces)) {
+        result.root = dir;
+      } // pnpm workspaces
+      else if (await fileExists(path.join(dir, "pnpm-workspace.yaml"))) {
+        result.root = dir;
+      }
+    }
   }
 
   const npmLockfile = path.join(dir, "package-lock.json");
@@ -245,6 +259,7 @@ export interface PkgJson {
   name?: string;
   version?: string;
   license?: string;
+  workspaces?: string[];
 
   dependencies?: Record<string, string>;
   devDependencies?: Record<string, string>;

test/commands.test.ts

@@ -101,6 +101,79 @@ describe("install", () => {
     });
   });
 
+  it("jsr i @std/encoding - inside workspace member", async () => {
+    await runInTempDir(async (dir) => {
+      const parentPkgJson = { name: "", private: true, workspaces: ["sub"] };
+      const parentPkgJsonPath = path.join(dir, "package.json");
+      await writeJson<PkgJson>(parentPkgJsonPath, parentPkgJson);
+
+      // Create sub folder with package.json
+      const subPkgJsonPath = path.join(dir, "sub", "package.json");
+      await writeJson(subPkgJsonPath, { name: "foo" });
+
+      await runJsr(["i", "@std/encoding"], path.join(dir, "sub"));
+
+      assert.deepEqual(
+        await readJson<PkgJson>(path.join(dir, "package.json")),
+        parentPkgJson,
+      );
+
+      const pkgJson = await readJson<PkgJson>(subPkgJsonPath);
+      assert.ok(
+        pkgJson.dependencies && "@std/encoding" in pkgJson.dependencies,
+        "Missing dependency entry",
+      );
+
+      assert.match(
+        pkgJson.dependencies["@std/encoding"],
+        /^npm:@jsr\/std__encoding@\^\d+\.\d+\.\d+.*$/,
+      );
+
+      const npmRc = await readTextFile(path.join(dir, ".npmrc"));
+      assert.ok(
+        npmRc.includes("@jsr:registry=https://npm.jsr.io"),
+        "Missing npmrc registry",
+      );
+    });
+  });
+
+  it("jsr i @std/encoding - inside pnpm workspace member", async () => {
+    await runInTempDir(async (dir) => {
+      const parentPkgJson = { name: "", private: true };
+      const parentPkgJsonPath = path.join(dir, "package.json");
+      await writeJson<PkgJson>(parentPkgJsonPath, parentPkgJson);
+      await writeTextFile(path.join(dir, "pnpm-workspace.yaml"), "");
+
+      // Create sub folder with package.json
+      const subPkgJsonPath = path.join(dir, "sub", "package.json");
+      await writeJson(subPkgJsonPath, { name: "foo" });
+
+      await runJsr(["i", "--pnpm", "@std/encoding"], path.join(dir, "sub"));
+
+      assert.deepEqual(
+        await readJson<PkgJson>(path.join(dir, "package.json")),
+        parentPkgJson,
+      );
+
+      const pkgJson = await readJson<PkgJson>(subPkgJsonPath);
+      assert.ok(
+        pkgJson.dependencies && "@std/encoding" in pkgJson.dependencies,
+        "Missing dependency entry",
+      );
+
+      assert.match(
+        pkgJson.dependencies["@std/encoding"],
+        /^npm:@jsr\/std__encoding@\^\d+\.\d+\.\d+.*$/,
+      );
+
+      const npmRc = await readTextFile(path.join(dir, ".npmrc"));
+      assert.ok(
+        npmRc.includes("@jsr:registry=https://npm.jsr.io"),
+        "Missing npmrc registry",
+      );
+    });
+  });
+
   it("jsr i @std/[email protected] - with version", async () => {
     await withTempEnv(["i", "@std/[email protected]"], async (dir) => {
       const pkgJson = await readJson<PkgJson>(path.join(dir, "package.json"));

test/utils.test.ts

@@ -1,7 +1,12 @@
 import * as assert from "assert/strict";
 import * as path from "node:path";
 import { runInTempDir } from "./test_utils";
-import { findProjectDir, writeJson, writeTextFile } from "../src/utils";
+import {
+  findProjectDir,
+  PkgJson,
+  writeJson,
+  writeTextFile,
+} from "../src/utils";
 
 describe("findProjectDir", () => {
   it("should return npm if package-lock.json is found", async () => {
@@ -57,4 +62,35 @@ describe("findProjectDir", () => {
       assert.strictEqual(result.projectDir, sub);
     });
   });
+
+  it("should find workspace root folder", async () => {
+    await runInTempDir(async (tempDir) => {
+      const sub = path.join(tempDir, "sub");
+
+      await writeJson<PkgJson>(path.join(tempDir, "package.json"), {
+        workspaces: ["sub"],
+      });
+      await writeJson(path.join(sub, "package.json"), {});
+      const result = await findProjectDir(sub);
+      assert.strictEqual(
+        result.root,
+        tempDir,
+      );
+    });
+  });
+
+  it("should find workspace root folder with pnpm workspaces", async () => {
+    await runInTempDir(async (tempDir) => {
+      const sub = path.join(tempDir, "sub");
+
+      await writeJson<PkgJson>(path.join(tempDir, "package.json"), {});
+      await writeJson(path.join(sub, "package.json"), {});
+      await writeTextFile(path.join(tempDir, "pnpm-workspace.yaml"), "");
+      const result = await findProjectDir(sub);
+      assert.strictEqual(
+        result.root,
+        tempDir,
+      );
+    });
+  });
 });