better-auth/packages/cli/test/package-info.test.ts

import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { afterEach, describe, expect, test } from "vitest";
import { getInstalledPackageVersion } from "../src/utils/get-package-info";

/**
 * @see https://github.com/better-auth/better-auth/issues/10997
 */
describe("getInstalledPackageVersion", () => {
	const temporaryDirectories: string[] = [];

	afterEach(async () => {
		await Promise.all(
			temporaryDirectories
				.splice(0)
				.map((directory) => fs.rm(directory, { recursive: true, force: true })),
		);
	});

	test.for([
		{
			exports: { "./package.json": "./package.json" },
			packageName: "example-package",
			resolution: "its package manifest",
			version: "1.2.3",
		},
		{
			exports: "./index.js",
			packageName: "@example/package",
			resolution: "its package entry point",
			version: "4.5.6",
		},
		{
			exports: { ".": { import: "./index.js" } },
			packageName: "esm-only-package",
			resolution: "an import-only entry point",
			version: "7.8.9",
		},
	])(
		"resolves $packageName through $resolution",
		async ({ exports, packageName, version }) => {
			const workspaceRoot = await fs.mkdtemp(
				path.join(os.tmpdir(), "better-auth-installed-version-"),
			);
			temporaryDirectories.push(workspaceRoot);
			const projectDirectory = path.join(workspaceRoot, "apps", "web");
			const packageDirectory = path.join(
				workspaceRoot,
				"node_modules",
				...packageName.split("/"),
			);
			await fs.mkdir(projectDirectory, { recursive: true });
			await fs.mkdir(packageDirectory, { recursive: true });
			await fs.writeFile(
				path.join(packageDirectory, "package.json"),
				JSON.stringify({
					name: packageName,
					version,
					exports,
				}),
			);
			await fs.writeFile(path.join(packageDirectory, "index.js"), "");

			expect(getInstalledPackageVersion(packageName, projectDirectory)).toBe(
				version,
			);
		},
	);

	test("returns null when the package is not installed", async () => {
		const projectDirectory = await fs.mkdtemp(
			path.join(os.tmpdir(), "better-auth-missing-version-"),
		);
		temporaryDirectories.push(projectDirectory);

		expect(
			getInstalledPackageVersion("missing-package", projectDirectory),
		).toBeNull();
	});
});