import { existsSync, mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";import { tmpdir } from "node:os";import { join } from "node:path";import { afterEach, describe, expect, it } from "vitest";import {  prunePresentationRuntime,  removablePackageDirectories,} from "./prepare-presentation-runtime.mjs"; const workspaces: string[] = []; afterEach(() => {  for (const workspace of workspaces.splice(0))    rmSync(workspace, { recursive: true, force: true });}); function runtime(): string {  const workspace = mkdtempSync(join(tmpdir(), "lattice-presentation-prune-"));  workspaces.push(workspace);  return workspace;} function write(root: string, file: string, content = "fixture\n") {  mkdirSync(join(root, file, ".."), { recursive: true });  writeFileSync(join(root, file), content);} /** A package manifest at `directory` (relative to `root`). */function manifest(root: string, directory: string, fields: Record<string, unknown>) {  write(root, join(directory, "package.json"), JSON.stringify(fields));} describe("presentation runtime pruning", () => {  it("removes only audited package trees and non-runtime build metadata", () => {    const workspace = runtime();    const modules = join(workspace, "node_modules");    const packages = ["@open-slide/core", "some-package", "emoji-picker-react", "@base-ui/react", "react-router", "react-dom"];    manifest(workspace, "", { dependencies: Object.fromEntries(packages.map((name) => [name, "1.0.0"])) });    for (const name of packages) manifest(workspace, `node_modules/${name}`, { name });    const kept = [      "@open-slide/core/src/app.tsx",      "@open-slide/core/LICENSE",      "some-package/src/runtime.ts",      "some-package/dist/index.js",      "some-package/LICENSE.md",      "emoji-picker-react/dist/data/emojis-fr.js",      "emoji-picker-react/dist/data/emojis-uncompiled.ts",      "@base-ui/react/button/index.mjs",      "react-router/dist/development/index.mjs",      "react-dom/server.browser.js",      "react-dom/cjs/react-dom-server.browser.development.js",      "react-dom/cjs/react-dom-server-legacy.browser.production.js",    ];    const removed = [      "some-package/dist/index.js.map",      "some-package/dist/index.d.ts",      "some-package/dist/types.d.mts",      "emoji-picker-react/dist/data/emojis-fr.json",      "emoji-picker-react/dist/data/emojis-fr.ts",      "@base-ui/react/button/index.js",      "react-router/dist/production/index.mjs",      "react-dom/server.node.js",      "react-dom/static.edge.js",      "react-dom/cjs/react-dom-server.bun.production.js",      "react-dom/cjs/react-dom-server-legacy.node.development.js",      ...removablePackageDirectories.map(        (directory) => `${directory}/fixture.js`,      ),    ];    for (const file of [...kept, ...removed]) write(modules, file);     prunePresentationRuntime(workspace);     for (const file of kept) expect(existsSync(join(modules, file))).toBe(true);    for (const file of removed) expect(existsSync(join(modules, file))).toBe(false);  });   it("keeps only the packages the runtime's dependencies reach", () => {    const workspace = runtime();    const modules = join(workspace, "node_modules");    manifest(workspace, "", {      dependencies: { "@open-slide/core": "2.0.0", vite: "8.0.0" },      devDependencies: { esbuild: "0.28.0" },    });    manifest(workspace, "node_modules/@open-slide/core", {      name: "@open-slide/core",      dependencies: { shadcn: "4.0.0", "@tailwindcss/node": "4.0.0", picomatch: "4.0.0" },    });    manifest(workspace, "node_modules/vite", {      name: "vite",      dependencies: { lightningcss: "1.33.0", rolldown: "1.0.0" },      optionalDependencies: { fsevents: "2.0.0" },      peerDependencies: { esbuild: "*" },      peerDependenciesMeta: { esbuild: { optional: true } },    });    manifest(workspace, "node_modules/vite/node_modules/lightningcss", { name: "lightningcss" });    manifest(workspace, "node_modules/rolldown", {      name: "rolldown",      // Only this host's binding is installed.      optionalDependencies: { "@rolldown/binding-darwin-arm64": "1.0.0", "@rolldown/binding-linux-x64-gnu": "1.0.0" },    });    manifest(workspace, "node_modules/@rolldown/binding-darwin-arm64", { name: "@rolldown/binding-darwin-arm64" });    manifest(workspace, "node_modules/fsevents", { name: "fsevents" });    manifest(workspace, "node_modules/@tailwindcss/node", {      name: "@tailwindcss/node",      dependencies: { lightningcss: "1.32.0" },    });    manifest(workspace, "node_modules/lightningcss", { name: "lightningcss" });    // A nested copy shadows the hoisted one for its dependent only.    manifest(workspace, "node_modules/@open-slide/core/node_modules/picomatch", { name: "picomatch" });    manifest(workspace, "node_modules/picomatch", { name: "picomatch" });    manifest(workspace, "node_modules/shadcn", { name: "shadcn", dependencies: { "ts-morph": "1.0.0" } });    write(modules, "shadcn/LICENSE.md");    write(modules, "shadcn/dist/tailwind.css");    write(modules, "shadcn/dist/index.js");    write(modules, "shadcn/dist/registry/index.js");    manifest(workspace, "node_modules/shadcn/node_modules/commander", { name: "commander" });    manifest(workspace, "node_modules/ts-morph", { name: "ts-morph" });    manifest(workspace, "node_modules/esbuild", { name: "esbuild" });    write(modules, ".bin/vite");     prunePresentationRuntime(workspace);     const exists = (path: string) => existsSync(join(modules, path));    for (const path of [      "@open-slide/core/package.json",      "@open-slide/core/node_modules/picomatch/package.json",      "vite/package.json",      "rolldown/package.json",      "@rolldown/binding-darwin-arm64/package.json",      "fsevents/package.json",      "@tailwindcss/node/package.json",      "lightningcss/package.json",      "shadcn/package.json",      "shadcn/LICENSE.md",      "shadcn/dist/tailwind.css",    ]) expect(exists(path), path).toBe(true);    for (const path of [      "picomatch",      "vite/node_modules/lightningcss",      "shadcn/dist/index.js",      "shadcn/dist/registry",      "shadcn/node_modules",      "ts-morph",      "esbuild",      ".bin",    ]) expect(exists(path), path).toBe(false);  });});