feat: remove dependencies for Node built-ins

Author: MichaelDeBoey

package.json

@@ -98,7 +98,6 @@
     "jackspeak": "=2.1.1",
     "jsonc-parser": "=3.2.0",
     "linklocal": "^2.8.2",
-    "lodash.isarray": "^4.0.0",
     "markdownlint-cli": "~0.35",
     "mocha": "^3.5.3",
     "npm-which": "^3.0.1",
@@ -116,23 +115,14 @@
   },
   "dependencies": {
     "@rtsao/scc": "^1.1.0",
-    "array-includes": "^3.1.8",
-    "array.prototype.findlastindex": "^1.2.5",
-    "array.prototype.flat": "^1.3.3",
-    "array.prototype.flatmap": "^1.3.3",
     "debug": "^3.2.7",
     "doctrine": "^2.1.0",
     "eslint-import-resolver-node": "^0.3.9",
     "eslint-module-utils": "^2.12.0",
-    "hasown": "^2.0.2",
-    "is-core-module": "^2.16.1",
     "is-glob": "^4.0.3",
     "minimatch": "^3.1.2",
-    "object.fromentries": "^2.0.8",
     "object.groupby": "^1.0.3",
-    "object.values": "^1.2.1",
     "semver": "^6.3.1",
-    "string.prototype.trimend": "^1.0.9",
     "tsconfig-paths": "^3.15.0"
   }
 }

resolvers/README.md

@@ -73,11 +73,11 @@ If the resolver cannot resolve `source` relative to `file`, it should just retur
 Here is most of the [Node resolver] at the time of this writing. It is just a wrapper around substack/Browserify's synchronous [`resolve`]:
 
 ```js
+var { isBuiltin } = require('node:module');
 var resolve = require('resolve/sync');
-var isCoreModule = require('is-core-module');
 
 exports.resolve = function (source, file, config) {
-  if (isCoreModule(source)) return { found: true, path: null };
+  if (isBuiltin(source)) return { found: true, path: null };
   try {
     return { found: true, path: resolve(source, opts(file, config)) };
   } catch (err) {

resolvers/node/index.js

@@ -1,7 +1,7 @@
 'use strict';
 
+const { isBuiltin } = require('node:module');
 const resolve = require('resolve/sync');
-const isCoreModule = require('is-core-module');
 const path = require('path');
 
 const log = require('debug')('eslint-plugin-import:resolver:node');
@@ -49,7 +49,7 @@ exports.resolve = function (source, file, config) {
   log('Resolving:', source, 'from:', file);
   let resolvedPath;
 
-  if (isCoreModule(source)) {
+  if (isBuiltin(source)) {
     log('resolved to core');
     return { found: true, path: null };
   }

resolvers/node/package.json

@@ -31,7 +31,6 @@
   "homepage": "https://github.com/import-js/eslint-plugin-import",
   "dependencies": {
     "debug": "^3.2.7",
-    "is-core-module": "^2.13.0",
     "resolve": "^1.22.4"
   },
   "devDependencies": {

resolvers/webpack/index.js

@@ -2,17 +2,13 @@
 
 const findRoot = require('find-root');
 const path = require('path');
+const { isBuiltin } = require('node:module');
 const isEqual = require('lodash/isEqual');
 const interpret = require('interpret');
 const existsSync = require('fs').existsSync;
-const isCore = require('is-core-module');
 const resolve = require('resolve/sync');
 const semver = require('semver');
-const hasOwn = require('hasown');
 const isRegex = require('is-regex');
-const isArray = Array.isArray;
-const keys = Object.keys;
-const assign = Object.assign;
 
 const log = require('debug')('eslint-plugin-import:resolver:webpack');
 
@@ -22,7 +18,7 @@ function registerCompiler(moduleDescriptor) {
   if (moduleDescriptor) {
     if (typeof moduleDescriptor === 'string') {
       require(moduleDescriptor);
-    } else if (!isArray(moduleDescriptor)) {
+    } else if (!Array.isArray(moduleDescriptor)) {
       moduleDescriptor.register(require(moduleDescriptor.module));
     } else {
       for (let i = 0; i < moduleDescriptor.length; i++) {
@@ -38,7 +34,7 @@ function registerCompiler(moduleDescriptor) {
 }
 
 function findConfigPath(configPath, packageDir) {
-  const extensions = keys(interpret.extensions).sort(function (a, b) {
+  const extensions = Object.keys(interpret.extensions).sort(function (a, b) {
     return a === '.js' ? -1 : b === '.js' ? 1 : a.length - b.length;
   });
   let extension;
@@ -79,7 +75,7 @@ function findExternal(source, externals, context, resolveSync) {
   if (typeof externals === 'string') { return source === externals; }
 
   // array: recurse
-  if (isArray(externals)) {
+  if (Array.isArray(externals)) {
     return externals.some(function (e) { return findExternal(source, e, context, resolveSync); });
   }
 
@@ -133,7 +129,7 @@ function findExternal(source, externals, context, resolveSync) {
 
   // else, vanilla object
   for (const key in externals) {
-    if (hasOwn(externals, key) && source === key) {
+    if (Object.hasOwn(externals, key) && source === key) {
       return true;
     }
   }
@@ -156,7 +152,7 @@ const webpack2DefaultResolveConfig = {
 function createWebpack2ResolveSync(webpackRequire, resolveConfig) {
   const EnhancedResolve = webpackRequire('enhanced-resolve');
 
-  return EnhancedResolve.create.sync(assign({}, webpack2DefaultResolveConfig, resolveConfig));
+  return EnhancedResolve.create.sync(Object.assign({}, webpack2DefaultResolveConfig, resolveConfig));
 }
 
 /**
@@ -178,7 +174,7 @@ function makeRootPlugin(ModulesInRootPlugin, name, root) {
   if (typeof root === 'string') {
     return new ModulesInRootPlugin(name, root);
   }
-  if (isArray(root)) {
+  if (Array.isArray(root)) {
     return function () {
       root.forEach(function (root) {
         this.apply(new ModulesInRootPlugin(name, root));
@@ -238,7 +234,7 @@ function createWebpack1ResolveSync(webpackRequire, resolveConfig, plugins) {
       if (
         plugin.constructor
         && plugin.constructor.name === 'ResolverPlugin'
-        && isArray(plugin.plugins)
+        && Array.isArray(plugin.plugins)
       ) {
         resolvePlugins.push.apply(resolvePlugins, plugin.plugins);
       }
@@ -420,7 +416,7 @@ exports.resolve = function (source, file, settings) {
       : webpackConfig(env, argv);
   }
 
-  if (isArray(webpackConfig)) {
+  if (Array.isArray(webpackConfig)) {
     webpackConfig = webpackConfig.map((cfg) => {
       if (typeof cfg === 'function') {
         return cfg(env, argv);
@@ -467,7 +463,7 @@ exports.resolve = function (source, file, settings) {
   try {
     return { found: true, path: resolveSync(path.dirname(file), source) };
   } catch (err) {
-    if (isCore(source)) {
+    if (isBuiltin(source)) {
       return { found: true, path: null };
     }
 

resolvers/webpack/package.json

@@ -34,9 +34,7 @@
     "debug": "^3.2.7",
     "enhanced-resolve": "^0.9.1",
     "find-root": "^1.1.0",
-    "hasown": "^2.0.2",
     "interpret": "^1.4.0",
-    "is-core-module": "^2.15.1",
     "is-regex": "^1.2.0",
     "lodash": "^4.17.21",
     "resolve": "^2.0.0-next.5",

src/core/importType.js

@@ -1,5 +1,5 @@
+import { isBuiltin } from 'node:module';
 import { isAbsolute as nodeIsAbsolute, relative, resolve as nodeResolve } from 'path';
-import isCoreModule from 'is-core-module';
 
 import resolve from 'eslint-module-utils/resolve';
 import { getContextPackagePath } from './packagePath';
@@ -32,7 +32,7 @@ export function isBuiltIn(name, settings, path) {
   if (path || !name) { return false; }
   const base = baseModule(name);
   const extras = settings && settings['import/core-modules'] || [];
-  return isCoreModule(base) || extras.indexOf(base) > -1;
+  return isBuiltin(base) || extras.indexOf(base) > -1;
 }
 
 const moduleRegExp = /^\w/;

src/exportMap/visitor.js

@@ -1,4 +1,3 @@
-import includes from 'array-includes';
 import { SourceCode } from 'eslint';
 import { availableDocStyleParsers, captureDoc } from './doc';
 import Namespace from './namespace';
@@ -121,11 +120,11 @@ export default class ImportExportVisitorBuilder {
       'TSAbstractClassDeclaration',
       'TSModuleDeclaration',
     ];
-    const exportedDecls = this.ast.body.filter(({ type, id, declarations }) => includes(declTypes, type) && (
+    const exportedDecls = this.ast.body.filter(({ type, id, declarations }) => declTypes.includes(type) && (
       id && id.name === exportedName || declarations && declarations.find((d) => d.id.name === exportedName)
     ));
     if (exportedDecls.length === 0) {
-      // Export is not referencing any local declaration, must be re-exporting
+      // Export is not referencing any local declaration, must be re-exported
       this.exportMap.namespace.set('default', captureDoc(this.source, this.docStyleParsers, astNode));
       return;
     }

src/rules/export.js

@@ -1,7 +1,6 @@
 import ExportMapBuilder from '../exportMap/builder';
 import recursivePatternCapture from '../exportMap/patternCapture';
 import docsUrl from '../docsUrl';
-import includes from 'array-includes';
 
 /*
 Notes on TypeScript namespaces aka TSModuleDeclaration:
@@ -157,10 +156,10 @@ module.exports = {
         const isTypeVariableDecl = node.declaration.kind === 'type';
 
         if (node.declaration.id != null) {
-          if (includes([
+          if ([
             'TSTypeAliasDeclaration',
             'TSInterfaceDeclaration',
-          ], node.declaration.type)) {
+          ].includes(node.declaration.type)) {
             addNamed(node.declaration.id.name, node.declaration.id, parent, true);
           } else {
             addNamed(node.declaration.id.name, node.declaration.id, parent, isTypeVariableDecl);

src/rules/exports-last.js

@@ -1,5 +1,3 @@
-import findLastIndex from 'array.prototype.findlastindex';
-
 import docsUrl from '../docsUrl';
 
 function isNonExportStatement({ type }) {
@@ -22,7 +20,7 @@ module.exports = {
   create(context) {
     return {
       Program({ body }) {
-        const lastNonExportStatementIndex = findLastIndex(body, isNonExportStatement);
+        const lastNonExportStatementIndex = body.findLastIndex(isNonExportStatement);
 
         if (lastNonExportStatementIndex !== -1) {
           body.slice(0, lastNonExportStatementIndex).forEach((node) => {

src/rules/group-exports.js

@@ -1,6 +1,4 @@
 import docsUrl from '../docsUrl';
-import values from 'object.values';
-import flat from 'array.prototype.flat';
 
 const meta = {
   type: 'suggestion',
@@ -107,8 +105,9 @@ function create(context) {
       }
 
       // Report multiple `aggregated exports` from the same module (ES2015 modules)
-      flat(values(nodes.modules.sources)
-        .filter((nodesWithSource) => Array.isArray(nodesWithSource) && nodesWithSource.length > 1))
+      Object.values(nodes.modules.sources)
+        .filter((nodesWithSource) => Array.isArray(nodesWithSource) && nodesWithSource.length > 1)
+        .flat()
         .forEach((node) => {
           context.report({
             node,
@@ -127,8 +126,9 @@ function create(context) {
       }
 
       // Report multiple `aggregated type exports` from the same module (FLOW ES2015 modules)
-      flat(values(nodes.types.sources)
-        .filter((nodesWithSource) => Array.isArray(nodesWithSource) && nodesWithSource.length > 1))
+      Object.values(nodes.types.sources)
+        .filter((nodesWithSource) => Array.isArray(nodesWithSource) && nodesWithSource.length > 1)
+        .flat()
         .forEach((node) => {
           context.report({
             node,

src/rules/no-anonymous-default-export.js

@@ -3,10 +3,6 @@
  * @author Duncan Beevers
  */
 
-import hasOwn from 'hasown';
-import values from 'object.values';
-import fromEntries from 'object.fromentries';
-
 import docsUrl from '../docsUrl';
 
 const defs = {
@@ -60,12 +56,12 @@ const defs = {
   },
 };
 
-const schemaProperties = fromEntries(values(defs).map((def) => [def.option, {
+const schemaProperties = Object.fromEntries(Object.values(defs).map((def) => [def.option, {
   description: def.description,
   type: 'boolean',
 }]));
 
-const defaults = fromEntries(values(defs).map((def) => [def.option, hasOwn(def, 'default') ? def.default : false]));
+const defaults = Object.fromEntries(Object.values(defs).map((def) => [def.option, Object.hasOwn(def, 'default') ? def.default : false]));
 
 module.exports = {
   meta: {

src/rules/no-duplicates.js

@@ -1,7 +1,6 @@
 import { getSourceCode } from 'eslint-module-utils/contextCompat';
 import resolve from 'eslint-module-utils/resolve';
 import semver from 'semver';
-import flatMap from 'array.prototype.flatmap';
 
 import docsUrl from '../docsUrl';
 
@@ -95,7 +94,7 @@ function getFix(first, rest, sourceCode, context) {
   }
 
   const defaultImportNames = new Set(
-    flatMap([].concat(first, rest || []), (x) => getDefaultImportName(x) || []),
+    [].concat(first, rest || []).flatMap((x) => getDefaultImportName(x) || []),
   );
 
   // Bail if there are multiple different default import names – it's up to the

src/rules/no-unused-modules.js

@@ -10,9 +10,6 @@ import resolve from 'eslint-module-utils/resolve';
 import visit from 'eslint-module-utils/visit';
 import { dirname, join } from 'path';
 import readPkgUp from 'eslint-module-utils/readPkgUp';
-import values from 'object.values';
-import includes from 'array-includes';
-import flatMap from 'array.prototype.flatmap';
 
 import ExportMapBuilder from '../exportMap/builder';
 import recursivePatternCapture from '../exportMap/patternCapture';
@@ -137,8 +134,7 @@ function listFilesWithLegacyFunctions(src, extensions) {
       listFilesToProcess: originalListFilesToProcess,
     } = require('eslint/lib/util/glob-util');
     const patterns = src.concat(
-      flatMap(
-        src,
+      src.flatMap(
         (pattern) => extensions.map((extension) => (/\*\*|\*\./).test(pattern) ? pattern : `${pattern}/**/*${extension}`),
       ),
     );
@@ -294,7 +290,7 @@ function resolveFiles(src, ignoreExports, context) {
   // prepare list of source files, don't consider files from node_modules
   const resolvedFiles = srcFileList.length && typeof srcFileList[0] === 'string'
     ? srcFileList.filter((filePath) => !isNodeModule(filePath))
-    : flatMap(srcFileList, ({ filename }) => isNodeModule(filename) ? [] : filename);
+    : srcFileList.flatMap(({ filename }) => isNodeModule(filename) ? [] : filename);
 
   return new Set(resolvedFiles);
 }
@@ -478,9 +474,9 @@ const fileIsInPkg = (file) => {
   };
 
   const checkPkgFieldObject = (pkgField) => {
-    const pkgFieldFiles = flatMap(values(pkgField), (value) => typeof value === 'boolean' ? [] : join(basePath, value));
+    const pkgFieldFiles = Object.values(pkgField).flatMap((value) => typeof value === 'boolean' ? [] : join(basePath, value));
 
-    if (includes(pkgFieldFiles, file)) {
+    if (pkgFieldFiles.includes(file)) {
       return true;
     }
   };