feat: use jiti for plugin loading

package.json

@@ -64,6 +64,7 @@
     "@nx/react": "22.3.3",
     "@nx/vite": "22.3.3",
     "@nx/workspace": "22.3.3",
+    "@push-based/jiti-tsc": "^0.0.2",
     "@push-based/nx-verdaccio": "0.0.7",
     "@swc-node/register": "1.9.2",
     "@swc/cli": "0.6.0",
@@ -102,7 +103,7 @@
     "husky": "^8.0.0",
     "inquirer": "^9.3.7",
     "jest-extended": "^6.0.0",
-    "jiti": "2.4.2",
+    "jiti": "^2.6.1",
     "jsdom": "~24.0.0",
     "jsonc-eslint-parser": "^2.4.0",
     "knip": "^5.33.3",

packages/plugin-typescript/src/lib/runner/ts-runner.ts

@@ -3,8 +3,12 @@ import {
   createProgram,
   getPreEmitDiagnostics,
 } from 'typescript';
-import { logger, pluralizeToken, stringifyError } from '@code-pushup/utils';
-import { loadTargetConfig } from './utils.js';
+import {
+  loadTargetConfig,
+  logger,
+  pluralizeToken,
+  stringifyError,
+} from '@code-pushup/utils';
 
 export type DiagnosticsOptions = {
   tsconfig: string;

packages/plugin-typescript/src/lib/runner/utils.ts

@@ -3,9 +3,6 @@ import {
   type Diagnostic,
   DiagnosticCategory,
   flattenDiagnosticMessageText,
-  parseJsonConfigFileContent,
-  readConfigFile,
-  sys,
 } from 'typescript';
 import type { Issue } from '@code-pushup/models';
 import { truncateIssueMessage } from '@code-pushup/utils';
@@ -88,30 +85,3 @@ export function getIssueFromDiagnostic(diag: Diagnostic) {
     },
   } satisfies Issue;
 }
-
-export function loadTargetConfig(tsConfigPath: string) {
-  const resolvedConfigPath = path.resolve(tsConfigPath);
-  const { config, error } = readConfigFile(resolvedConfigPath, sys.readFile);
-
-  if (error) {
-    throw new Error(
-      `Error reading TypeScript config file at ${tsConfigPath}:\n${error.messageText}`,
-    );
-  }
-
-  const parsedConfig = parseJsonConfigFileContent(
-    config,
-    sys,
-    path.dirname(resolvedConfigPath),
-    {},
-    resolvedConfigPath,
-  );
-
-  if (parsedConfig.fileNames.length === 0) {
-    throw new Error(
-      'No files matched by the TypeScript configuration. Check your "include", "exclude" or "files" settings.',
-    );
-  }
-
-  return parsedConfig;
-}

packages/utils/mocks/fixtures/tsconfig-setup/import-alias.ts

@@ -0,0 +1,3 @@
+import { name } from '@utils';
+
+export default `valid-ts-default-export-${name}`;

packages/utils/mocks/fixtures/tsconfig-setup/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "paths": {
+      "@utils/*": ["./utils.ts"]
+    }
+  },
+  "include": ["*.ts"]
+}

packages/utils/mocks/fixtures/tsconfig-setup/utils.ts

@@ -0,0 +1 @@
+export const name = 'utils-export';

packages/utils/package.json

@@ -30,14 +30,15 @@
     "@code-pushup/models": "0.108.1",
     "ansis": "^3.3.0",
     "build-md": "^0.4.2",
-    "bundle-require": "^5.1.0",
     "esbuild": "^0.25.2",
     "ora": "^9.0.0",
     "semver": "^7.6.0",
     "simple-git": "^3.20.0",
     "string-width": "^8.1.0",
     "wrap-ansi": "^9.0.2",
-    "zod": "^4.2.1"
+    "zod": "^4.2.1",
+    "typescript": "5.7.3",
+    "jiti": "^2.4.2"
   },
   "files": [
     "src",

packages/utils/src/index.ts

@@ -32,6 +32,7 @@ export {
   type ProcessObserver,
   type ProcessResult,
 } from './lib/execute-process.js';
+export { loadTargetConfig } from './lib/load-ts-config.js';
 export {
   crawlFileSystem,
   createReportPath,
@@ -41,7 +42,6 @@ export {
   filePathToCliArg,
   findLineNumberInText,
   findNearestFile,
-  importModule,
   pluginWorkDir,
   projectToFilename,
   readJsonFile,
@@ -178,3 +178,4 @@ export type {
   Prettify,
   WithRequired,
 } from './lib/types.js';
+export * from './lib/import-module.js';

packages/utils/src/lib/file-system.ts

@@ -1,9 +1,7 @@
-import { type Options, bundleRequire } from 'bundle-require';
 import { mkdir, readFile, readdir, rm, stat } from 'node:fs/promises';
 import path from 'node:path';
 import type { Format, PersistConfig } from '@code-pushup/models';
 import { logger } from './logger.js';
-import { settlePromise } from './promises.js';
 
 export async function readTextFile(filePath: string): Promise<string> {
   const buffer = await readFile(filePath);
@@ -52,23 +50,6 @@ export async function removeDirectoryIfExists(dir: string) {
   }
 }
 
-export async function importModule<T = unknown>(options: Options): Promise<T> {
-  const resolvedStats = await settlePromise(stat(options.filepath));
-  if (resolvedStats.status === 'rejected') {
-    throw new Error(`File '${options.filepath}' does not exist`);
-  }
-  if (!resolvedStats.value.isFile()) {
-    throw new Error(`Expected '${options.filepath}' to be a file`);
-  }
-
-  const { mod } = await bundleRequire<object>(options);
-
-  if (typeof mod === 'object' && 'default' in mod) {
-    return mod.default as T;
-  }
-  return mod as T;
-}
-
 export function createReportPath({
   outputDir,
   filename,

packages/utils/src/lib/file-system.int.test.ts → packages/utils/src/lib/import-module.int.test.ts

@@ -1,6 +1,6 @@
 import path from 'node:path';
-import { describe, expect, it } from 'vitest';
-import { importModule } from './file-system.js';
+import { describe, expect, it, vi } from 'vitest';
+import { importModule } from './import-module.js';
 
 describe('importModule', () => {
   const mockDir = path.join(
@@ -45,6 +45,25 @@ describe('importModule', () => {
     ).resolves.toBe('valid-ts-default-export');
   });
 
+  it('imports module with default tsconfig when tsconfig undefined', async () => {
+    vi.clearAllMocks();
+    await expect(
+      importModule({
+        filepath: path.join(mockDir, 'valid-ts-default-export.ts'),
+      }),
+    ).resolves.toBe('valid-ts-default-export');
+  });
+
+  it('imports module with custom tsconfig', async () => {
+    vi.clearAllMocks();
+    await expect(
+      importModule({
+        filepath: path.join(mockDir, 'tsconfig-setup', 'import-alias.ts'),
+        tsconfig: path.join(mockDir, 'tsconfig-setup', 'tsconfig.json'),
+      }),
+    ).resolves.toBe('valid-ts-default-export-utils-export');
+  });
+
   it('should throw if the file does not exist', async () => {
     await expect(
       importModule({ filepath: 'path/to/non-existent-export.mjs' }),
@@ -57,11 +76,9 @@ describe('importModule', () => {
     );
   });
 
-  it('should throw if file is not valid JS', async () => {
+  it('should load valid JSON', async () => {
     await expect(
       importModule({ filepath: path.join(mockDir, 'invalid-js-file.json') }),
-    ).rejects.toThrow(
-      `${path.join(mockDir, 'invalid-js-file.json')} is not a valid JS file`,
-    );
+    ).resolves.toStrictEqual({ key: 'value' });
   });
 });