chore: enabled eslint-plugin-n (#5280)

* chore: enabled eslint-plugin-n

* Actually included rules, without the override

* Revert unrelated formatting changes

* fix test/node-unit/cli/options.spec.js tests

* Use @rollup/plugin-alias for building node: prefixes

Author: JoshuaKGoldberg

bin/mocha.js

@@ -78,7 +78,7 @@ if (mochaArgs._) {
 }
 
 if (mochaArgs['node-option'] || Object.keys(nodeArgs).length || hasInspect) {
-  const {spawn} = require('child_process');
+  const {spawn} = require('node:child_process');
   const mochaPath = require.resolve('../lib/cli/cli.js');
 
   const nodeArgv =
@@ -126,7 +126,7 @@ if (mochaArgs['node-option'] || Object.keys(nodeArgs).length || hasInspect) {
     // be needed.
     if (!args.parallel || args.jobs < 2) {
       // win32 does not support SIGTERM, so use next best thing.
-      if (require('os').platform() === 'win32') {
+      if (require('node:os').platform() === 'win32') {
         proc.kill('SIGKILL');
       } else {
         // using SIGKILL won't cleanly close the output streams, which can result

docs/_data/files.js

@@ -1,7 +1,7 @@
 'use strict';
 
-const {resolve, relative, dirname} = require('path');
-const {promises: fs} = require('fs');
+const {resolve, relative, dirname} = require('node:path');
+const {promises: fs} = require('node:fs');
 
 const PROJECT_ROOT_DIR = resolve(__dirname, '..', '..');
 const FILES = [

docs/_data/supporters.js

@@ -1,5 +1,3 @@
-#!/usr/bin/env node
-
 /**
  * This script gathers metadata for active supporters of Mocha from OpenCollective's
  * API by aggregating order ("donation") information.
@@ -17,8 +15,8 @@
 
 'use strict';
 
-const {writeFile, mkdir, rm} = require('fs').promises;
-const {resolve} = require('path');
+const {writeFile, mkdir, rm} = require('node:fs').promises;
+const {resolve} = require('node:path');
 const debug = require('debug')('mocha:docs:data:supporters');
 const needle = require('needle');
 const blocklist = new Set(require('./blocklist.json'));

docs/_data/toc.js

@@ -1,8 +1,8 @@
 'use strict';
 
 const markdownToc = require('markdown-toc');
-const {readFileSync} = require('fs');
-const {resolve} = require('path');
+const {readFileSync} = require('node:fs');
+const {resolve} = require('node:path');
 
 const IGNORED_HEADINGS_REGEXP = /Features|Table of Contents|Backers|Sponsors/i;
 const DOCUMENT_PATH = resolve(__dirname, '..', 'index.md');

docs/_data/usage.js

@@ -1,8 +1,8 @@
 'use strict';
 
-const {stripVTControlCharacters} = require('util');
-const {resolve} = require('path');
-const {execSync} = require('child_process');
+const {stripVTControlCharacters} = require('node:util');
+const {resolve} = require('node:path');
+const {execSync} = require('node:child_process');
 
 const executable = require.resolve('../../bin/mocha');
 const flag = '--help';

eslint.config.js

@@ -1,6 +1,7 @@
 "use strict";
 
 const js = require('@eslint/js');
+const n = require('eslint-plugin-n');
 const globals = require('globals');
 
 const messages = {
@@ -9,6 +10,7 @@ const messages = {
 };
 
 module.exports = [
+  n.configs['flat/recommended-script'],
   {
     ...js.configs.recommended,
     languageOptions: {
@@ -20,8 +22,13 @@ module.exports = [
       sourceType: 'script'
     },
     rules: {
+      'n/prefer-node-protocol': 'error',
+      strict: ['error', 'global'],
+
       'no-var': 'off',
-      strict: ['error', 'global']
+      'n/no-process-exit': 'off',
+      'n/no-unpublished-require': 'off',
+      'n/no-unsupported-features/node-builtins': 'off',
     }
   },
   {

karma.conf.js

@@ -21,9 +21,9 @@
  */
 
 'use strict';
-const fs = require('fs');
-const path = require('path');
-const os = require('os');
+const fs = require('node:fs');
+const path = require('node:path');
+const os = require('node:os');
 const rollupPlugin = require('./scripts/karma-rollup-plugin');
 const BASE_BUNDLE_DIR_PATH = path.join(__dirname, '.karma');
 const env = process.env;

lib/cli/cli.js

@@ -1,5 +1,3 @@
-#!/usr/bin/env node
-
 'use strict';
 
 /**
@@ -13,7 +11,7 @@
 const debug = require('debug')('mocha:cli:cli');
 const symbols = require('log-symbols');
 const yargs = require('yargs');
-const path = require('path');
+const path = require('node:path');
 const {
   loadRc,
   loadPkgRc,

lib/cli/collect-files.js

@@ -1,7 +1,7 @@
 'use strict';
 
-const fs = require('fs');
-const path = require('path');
+const fs = require('node:fs');
+const path = require('node:path');
 const ansi = require('ansi-colors');
 const debug = require('debug')('mocha:cli:run:helpers');
 const minimatch = require('minimatch');

lib/cli/config.js

@@ -7,8 +7,8 @@
  * @module
  */
 
-const fs = require('fs');
-const path = require('path');
+const fs = require('node:fs');
+const path = require('node:path');
 const debug = require('debug')('mocha:cli:config');
 const findUp = require('find-up');
 const {createUnparsableFileError} = require('../errors');