nodejs: enforce exact npm dependency policy

nodejs/.npmrc

@@ -1 +1,2 @@
 omit-lockfile-registry-resolved=true
+save-exact=true

nodejs/package.json

@@ -37,7 +37,8 @@
         "clean": "rimraf --glob dist *.tgz",
         "build": "tsx esbuild-copilotsdk-nodejs.ts",
         "acquire:runtime-packages": "tsx scripts/runtime-package-acquisition.ts",
-        "pack:release": "tsx scripts/package-sdk.ts",
+        "pack:release": "npm run verify:dependency-policy && tsx scripts/package-sdk.ts",
+        "verify:dependency-policy": "tsx scripts/verify-dependency-policy.ts",
         "verify:release-packages": "tsx scripts/verify-release-packages.ts",
         "release:manifest": "tsx scripts/release-manifest.ts",
         "prepare:runtime": "tsx scripts/prepare-runtime.ts",
@@ -64,13 +65,14 @@
     "author": "GitHub",
     "license": "MIT",
     "dependencies": {
-        "koffi": "^3.2.1",
-        "vscode-jsonrpc": "^8.2.1",
-        "zod": "^4.3.6"
+        "koffi": "3.2.1",
+        "vscode-jsonrpc": "8.2.1",
+        "zod": "4.3.6"
     },
     "devDependencies": {
         "@platformatic/vfs": "^0.3.0",
         "@types/node": "^25.2.0",
+        "@types/semver": "7.8.0",
         "@types/ws": "^8.18.1",
         "@typescript-eslint/eslint-plugin": "^8.54.0",
         "@typescript-eslint/parser": "^8.54.0",

nodejs/scripts/dependency-policy.ts

@@ -0,0 +1,147 @@
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import * as semver from "semver";
+
+const NPM_REGISTRY_URL = "https://registry.npmjs.org";
+
+export const MINIMUM_DEPENDENCY_AGE_MS = 7 * 24 * 60 * 60 * 1000;
+
+export interface ProductionDependencyManifest {
+    dependencies?: Record<string, string>;
+    optionalDependencies?: Record<string, string>;
+}
+
+export interface ProductionDependency {
+    name: string;
+    section: "dependencies" | "optionalDependencies";
+    version: string;
+}
+
+export interface RegistryResponse {
+    json(): Promise<unknown>;
+    ok: boolean;
+    status: number;
+    statusText: string;
+}
+
+export type RegistryRequest = (url: string) => Promise<RegistryResponse>;
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+    return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function dependencyKey(dependency: ProductionDependency): string {
+    return `${dependency.name}@${dependency.version}`;
+}
+
+function readDependencySection(
+    manifest: Record<string, unknown>,
+    section: "dependencies" | "optionalDependencies"
+): Record<string, string> | undefined {
+    const value = manifest[section];
+    if (value === undefined) {
+        return undefined;
+    }
+    assert(isRecord(value), `${section} must be a JSON object`);
+    const dependencies: Record<string, string> = {};
+    for (const [name, version] of Object.entries(value)) {
+        assert(typeof version === "string", `${section}.${name} must be a string`);
+        dependencies[name] = version;
+    }
+    return dependencies;
+}
+
+export function readProductionDependencyManifest(path: string): ProductionDependencyManifest {
+    const parsed: unknown = JSON.parse(readFileSync(path, "utf8"));
+    assert(isRecord(parsed), "package.json must contain a JSON object");
+    return {
+        dependencies: readDependencySection(parsed, "dependencies"),
+        optionalDependencies: readDependencySection(parsed, "optionalDependencies"),
+    };
+}
+
+export function assertExactProductionDependencies(
+    manifest: ProductionDependencyManifest
+): ProductionDependency[] {
+    const dependencies: ProductionDependency[] = [];
+    for (const section of ["dependencies", "optionalDependencies"] as const) {
+        for (const [name, version] of Object.entries(manifest[section] ?? {})) {
+            assert.equal(
+                semver.valid(version),
+                version,
+                `${section}.${name} must use an exact SemVer version; found '${version}'`
+            );
+            dependencies.push({ name, section, version });
+        }
+    }
+    return dependencies;
+}
+
+export function requiresPublicationCooldown(dependencyName: string): boolean {
+    return !dependencyName.startsWith("@github/");
+}
+
+export async function loadNpmPublicationTimes(
+    dependencies: readonly ProductionDependency[],
+    request: RegistryRequest = (url) => fetch(url)
+): Promise<Map<string, string>> {
+    const externalDependencies = dependencies.filter((dependency) =>
+        requiresPublicationCooldown(dependency.name)
+    );
+    const packageNames = [...new Set(externalDependencies.map((dependency) => dependency.name))];
+    const metadata = new Map<string, Record<string, unknown>>();
+
+    await Promise.all(
+        packageNames.map(async (packageName) => {
+            const response = await request(
+                `${NPM_REGISTRY_URL}/${encodeURIComponent(packageName)}`
+            );
+            assert(
+                response.ok,
+                `npm metadata request for ${packageName} failed: ${response.status} ${response.statusText}`
+            );
+            const body = await response.json();
+            assert(isRecord(body), `npm metadata for ${packageName} must be a JSON object`);
+            const times = body.time;
+            assert(isRecord(times), `npm metadata for ${packageName} is missing publication times`);
+            metadata.set(packageName, times);
+        })
+    );
+
+    return new Map(
+        externalDependencies.map((dependency) => {
+            const publishedAt = metadata.get(dependency.name)?.[dependency.version];
+            assert(
+                typeof publishedAt === "string",
+                `npm metadata is missing a publication time for ${dependencyKey(dependency)}`
+            );
+            return [dependencyKey(dependency), publishedAt];
+        })
+    );
+}
+
+export function assertMinimumPublicationAge(
+    dependencies: readonly ProductionDependency[],
+    publicationTimes: ReadonlyMap<string, string>,
+    now = Date.now()
+): void {
+    assert(Number.isFinite(now), "Dependency policy verification time must be finite");
+
+    for (const dependency of dependencies) {
+        if (!requiresPublicationCooldown(dependency.name)) {
+            continue;
+        }
+        const key = dependencyKey(dependency);
+        const publishedAt = publicationTimes.get(key);
+        assert(publishedAt, `Missing npm publication time for ${key}`);
+        const publishedAtMs = Date.parse(publishedAt);
+        assert(Number.isFinite(publishedAtMs), `Invalid npm publication time for ${key}`);
+        const eligibleAtMs = publishedAtMs + MINIMUM_DEPENDENCY_AGE_MS;
+        assert(
+            now >= eligibleAtMs,
+            `${key} was published at ${publishedAt} and is not eligible until ${new Date(
+                eligibleAtMs
+            ).toISOString()}`
+        );
+    }
+}

nodejs/scripts/verify-dependency-policy.ts

@@ -0,0 +1,28 @@
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import {
+    assertExactProductionDependencies,
+    assertMinimumPublicationAge,
+    loadNpmPublicationTimes,
+    readProductionDependencyManifest,
+    requiresPublicationCooldown,
+} from "./dependency-policy.js";
+
+async function main(): Promise<void> {
+    const nodeRoot = join(dirname(fileURLToPath(import.meta.url)), "..");
+    const manifest = readProductionDependencyManifest(join(nodeRoot, "package.json"));
+    const dependencies = assertExactProductionDependencies(manifest);
+    const publicationTimes = await loadNpmPublicationTimes(dependencies);
+    assertMinimumPublicationAge(dependencies, publicationTimes);
+    const externalCount = dependencies.filter((dependency) =>
+        requiresPublicationCooldown(dependency.name)
+    ).length;
+    console.log(
+        `Verified ${dependencies.length} exact production dependencies; ${externalCount} meet the seven-day npm publication age requirement.`
+    );
+}
+
+main().catch((error) => {
+    console.error(`::error::${error instanceof Error ? error.message : String(error)}`);
+    process.exitCode = 1;
+});

nodejs/scripts/verify-release-packages.ts

@@ -6,13 +6,15 @@ import { fileURLToPath } from "node:url";
 import { globSync } from "glob";
 import { t as listTar, x as extractTar } from "tar";
 import { getRuntimePackageName, RUNTIME_PLATFORMS } from "../src/runtimeArtifacts.js";
+import { assertExactProductionDependencies } from "./dependency-policy.js";
 
 interface PackedPackage {
     manifest: {
+        dependencies?: Record<string, string>;
         name: string;
+        optionalDependencies?: Record<string, string>;
         version: string;
         repository?: string | { type?: string; url?: string };
-        optionalDependencies?: Record<string, string>;
     };
     entries: Set<string>;
 }
@@ -27,6 +29,7 @@ assert(
         : sourceManifest.repository?.url?.trim(),
     "Main package is missing repository metadata"
 );
+assertExactProductionDependencies(sourceManifest);
 const expectedRuntimePackages = Object.fromEntries(
     RUNTIME_PLATFORMS.map((platform) => [getRuntimePackageName(platform), sourceManifest.version])
 );
@@ -77,11 +80,17 @@ assert.deepEqual(
 
 const mainPackage = packages.get(sourceManifest.name);
 assert(mainPackage, `Missing ${sourceManifest.name} tarball`);
+assert.deepEqual(
+    mainPackage.manifest.dependencies,
+    sourceManifest.dependencies,
+    "Main package dependencies do not match the source manifest"
+);
 assert.deepEqual(
     mainPackage.manifest.optionalDependencies,
     expectedRuntimePackages,
     "Main package optional dependencies do not match the platform packages"
 );
+assertExactProductionDependencies(mainPackage.manifest);
 assert(mainPackage.entries.has("package/dist/index.js"), "Main package is missing dist/index.js");
 assert(
     mainPackage.entries.has("package/dist/cjs/index.js"),