feat: add fullTraceInclude option

package.json

@@ -43,6 +43,7 @@
     "rollup": "^4.52.4",
     "rollup-plugin-esbuild": "^6.2.1",
     "semver": "^7.7.2",
+    "tinyglobby": "^0.2.15",
     "typescript": "^5.9.2",
     "vitest": "^3.2.4"
   },

src/trace.ts

@@ -7,6 +7,7 @@ import { parseNodeModulePath } from "mlly";
 import { dirname, join, relative, resolve } from "pathe";
 import { readPackageJSON, writePackageJSON } from "pkg-types";
 import semver from "semver";
+import { glob } from "tinyglobby";
 
 type TracedFile = {
   path: string;
@@ -116,6 +117,17 @@ export async function traceNodeModules(
         pkgJSON,
       };
       tracedPackage.versions[pkgJSON.version || "0.0.0"] = tracedPackageVersion;
+
+      if (opts.fullTraceInclude) {
+        const allFiles = await glob("**/*", {
+          cwd: tracedFile.pkgPath,
+          ignore: ["node_modules/**"],
+        });
+
+        for (const file of allFiles) {
+          tracedPackageVersion.files.push(file);
+        }
+      }
     }
     tracedPackageVersion.files.push(tracedFile.path);
     tracedFile.pkgName = pkgName;
@@ -190,9 +202,9 @@ export async function traceNodeModules(
   // Utility to find package parents
   const findPackageParents = (pkg: TracedPackage, version: string) => {
     // Try to find parent packages
-    const versionFiles: TracedFile[] = pkg.versions[version]!.files.map(
-      (path) => tracedFiles[path]!,
-    );
+    const versionFiles = pkg.versions[version]!.files.map(
+      (path) => tracedFiles[path],
+    ).filter((x): x is TracedFile => x !== undefined);
     const parentPkgs = [
       ...new Set(
         versionFiles.flatMap((file) =>

src/types.ts

@@ -39,6 +39,11 @@ export interface ExternalsTraceOptions {
    * If `true`, writes a `package.json` file to the output directory (parent) with the traced files as dependencies.
    */
   writePackageJson?: boolean;
+
+  /**
+   * If `true`, includes all files in the package in the trace.
+   */
+  fullTraceInclude?: boolean;
 }
 
 export interface ExternalsPluginOptions extends ExternalsTraceOptions {

test/trace.test.ts

@@ -2,6 +2,8 @@ import { describe, expect, it } from "vitest";
 import { traceNodeModules } from "../src/index.ts";
 import { fileURLToPath } from "node:url";
 import { cp } from "node:fs/promises";
+import path from "node:path";
+import { readFile } from "node:fs/promises";
 
 describe("traceNodeModules", () => {
   it("traceNodeModules", async () => {
@@ -21,4 +23,25 @@ describe("traceNodeModules", () => {
       subpathLib: "@fixture/nitro-lib@2.0.0",
     });
   });
+
+  it.only("traceNodeModules with fullTraceInclude", async () => {
+    const input = fileURLToPath(new URL("fixture/index.mjs", import.meta.url));
+    const outDir = fileURLToPath(new URL("dist/trace", import.meta.url));
+
+    await cp(input, `${outDir}/index.mjs`);
+    await traceNodeModules([input], { outDir, fullTraceInclude: true });
+
+    expect(
+      await readFile(
+        path.join(
+          outDir,
+          "node_modules",
+          "@fixture",
+          "nitro-utils",
+          "README.md",
+        ),
+        { encoding: "utf8" },
+      ),
+    ).toMatch("# TEST");
+  });
 });