fix: allow native fs access (#19)

Author: privatenumber

package.json

@@ -44,7 +44,7 @@
 	"dependencies": {
 		"aggregate-error": "^3.1.0",
 		"ansi-escapes": "^4.3.2",
-		"fs-require": "^1.0.0",
+		"fs-require": "^1.1.0",
 		"memfs": "^3.2.2",
 		"minimist": "^1.2.5",
 		"source-map-support": "^0.5.19",

pnpm-lock.yaml

@@ -17,4 +17,8 @@ sourceMapSupport.install({
 	},
 });
 
-export const mRequire = (modulePath: string): any => createFsRequire(mfs)(modulePath);
+export const mRequire = (modulePath: string): any => (
+	createFsRequire(mfs, {
+		fs: true,
+	})(modulePath)
+);

src/lib/memfs.ts

@@ -1,4 +1,5 @@
 import assert from 'assert';
+import fs from 'fs';
 import { last } from 'lodash-es';
 import { add } from '~/add';
 
@@ -15,3 +16,11 @@ it('should load esm', () => {
 		'should be 3',
 	);
 });
+
+it('should access fs', () => {
+	const dirFiles = fs.readdirSync(__dirname);
+	assert(
+		dirFiles.includes('passing-test.js'),
+		'should find self',
+	);
+});

tests/fixture/tests/passing-test.js

@@ -5,6 +5,9 @@ function createFunction() {
 	/** @type {import('webpack').Configuration} */
 	const config = {
 		mode: 'production',
+		node: {
+			__dirname: true,
+		},
 		resolve: {
 			alias: {
 				'~': path.resolve(__dirname, 'src/'),

tests/fixture/webpack.config.function.js

@@ -3,6 +3,9 @@ const path = require('path');
 /** @type {import('webpack').Configuration} */
 const baseConfig = {
 	mode: 'production',
+	node: {
+		__dirname: true,
+	},
 	resolve: {
 		alias: {
 			'~': path.resolve(__dirname, 'src/'),

tests/fixture/webpack.config.js

@@ -33,7 +33,7 @@ describe.each([
 			cwd: path.resolve('tests/fixture'),
 		}).catch(error => error);
 
-		expect(stdout).toMatch('2 passing');
+		expect(stdout).toMatch('3 passing');
 		expect(exitCode).toBe(0);
 	});
 
@@ -110,7 +110,7 @@ describe.each([
 			cwd: path.resolve('tests/fixture'),
 		}).catch(error => error);
 
-		expect(stdout).toMatch('2 passing');
+		expect(stdout).toMatch('3 passing');
 		expect(exitCode).toBe(0);
 	});
 
@@ -133,20 +133,20 @@ describe.each([
 		});
 
 		const stdoutPassing = await collectStdout(stdoutBuffers);
-		expect(stdoutPassing).toMatch('2 passing');
+		expect(stdoutPassing).toMatch('3 passing');
 
 		const passingTestPath = './tests/fixture/tests/passing-test.js';
 		const passingTestSource = (await fs.promises.readFile(passingTestPath)).toString();
 
 		await fs.promises.writeFile(passingTestPath, passingTestSource.replace('=== 3', '=== 4'));
 
 		const stdoutFailing = await collectStdout(stdoutBuffers);
-		expect(stdoutFailing).toMatch('1 passing');
+		expect(stdoutFailing).toMatch('2 passing');
 
 		await fs.promises.writeFile(passingTestPath, passingTestSource);
 
 		const stdoutPassing2 = await collectStdout(stdoutBuffers);
-		expect(stdoutPassing2).toMatch('2 passing');
+		expect(stdoutPassing2).toMatch('3 passing');
 
 		instantMochaWatch.cancel();
 	}, 20000);