chore(e2e): add e2e coverage for npmClientArgs on version

e2e/tests/lerna-version/npm-client-args.spec.ts

@@ -0,0 +1,59 @@
+import { Fixture } from "../../utils/fixture";
+import { normalizeCommitSHAs, normalizeEnvironment } from "../../utils/snapshot-serializer-utils";
+
+expect.addSnapshotSerializer({
+  serialize(str: string) {
+    return normalizeCommitSHAs(normalizeEnvironment(str));
+  },
+  test(val: string) {
+    return val != null && typeof val === "string";
+  },
+});
+
+describe("lerna-version-npm-client-args", () => {
+  let fixture: Fixture;
+
+  beforeEach(async () => {
+    fixture = await Fixture.create({
+      name: "lerna-version-npm-client-args",
+      packageManager: "npm",
+      initializeGit: true,
+      runLernaInit: true,
+      installDependencies: true,
+    });
+    await fixture.lerna("create package-a -y");
+
+    // eslint-plugin-react-app@6.2.2 requires a peer dependency of eslint@"6.x".
+    // Without it, the npm install at the end of `lerna version` will fail if
+    // --legacy-peer-deps is not passed correctly.
+    await fixture.updateJson("package.json", (json) => ({
+      ...json,
+      dependencies: {
+        ...(json.dependencies as Record<string, string>),
+        "eslint-plugin-react-app": "6.2.2",
+        eslint: "8.25.0",
+      },
+    }));
+    await fixture.createInitialGitCommit();
+    await fixture.exec("git push origin test-main");
+  });
+  afterEach(() => fixture.destroy());
+
+  it("should add npmClientArgs to npm install at the end of the version command", async () => {
+    const output = await fixture.lerna("version 3.3.3 -y --npmClientArgs=--legacy-peer-deps");
+    expect(output.combinedOutput).toMatchInlineSnapshot(`
+      lerna notice cli v999.9.9-e2e.0
+      lerna info current version 0.0.0
+      lerna info Assuming all packages changed
+
+      Changes:
+       - package-a: 0.0.0 => 3.3.3
+
+      lerna info auto-confirmed 
+      lerna info execute Skipping releases
+      lerna info git Pushing tags...
+      lerna success version finished
+
+    `);
+  });
+});