[eslint] cleanup

.eslintrc

@@ -0,0 +1,18 @@
+{
+	"root": true,
+
+	"extends": "@ljharb/eslint-config/node/6",
+
+	"overrides": [
+		{
+			"files": "test/**/*.js",
+			"env": {
+				"mocha": true,
+			},
+			"rules": {
+				"max-lines-per-function": "warn",
+				"max-nested-callbacks": "warn",
+			},
+		},
+	],
+}

README.md

@@ -84,11 +84,11 @@ A descriptor may have additional _invalid_ properties (an error will **not** be
 var foo = {};
 
 Object.defineProperty(foo, 'bar', {
-  enumerable: true,
-  whatever: 'blah', // invalid, but doesn't cause an error
-  get: function() {
-    return 'baz';
-  }
+	enumerable: true,
+	whatever: 'blah', // invalid, but doesn't cause an error
+	get: function() {
+		return 'baz';
+	}
 });
 
 console.log(foo.bar);
@@ -139,7 +139,7 @@ You might also be interested in these projects:
 
 ### Contributors
 
-| **Commits** | **Contributor** | 
+| **Commits** | **Contributor** |
 | --- | --- |
 | 21 | [jonschlinkert](https://github.com/jonschlinkert) |
 | 2 | [realityking](https://github.com/realityking) |
@@ -158,4 +158,4 @@ Released under the [MIT License](LICENSE).
 
 ***
 
-_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on November 01, 2017._
+_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on November 01, 2017._

index.js

@@ -1,29 +1,31 @@
 'use strict';
 
 const hasOwn = (obj, key) => Object.prototype.hasOwnProperty.call(obj, key);
-const isObject = val => {
-  return val !== null && typeof val === 'object' && !Array.isArray(val);
-};
+const isObject = (val) => val !== null && typeof val === 'object' && !Array.isArray(val);
 
 const isDescriptor = (obj, key) => {
-  if (!isObject(obj)) return false;
-  let desc = key ? Object.getOwnPropertyDescriptor(obj, key) : obj;
-  if (isObject(desc)) {
-    let booleans = ['configurable', 'enumerable', 'writable'];
-    if (!hasOwn(desc, 'value') || hasOwn(desc, 'get') || hasOwn(desc, 'set')) {
-      return false;
-    }
-    for (let key of Object.keys(desc)) {
-      if (booleans.includes(key) && typeof desc[key] !== 'boolean') {
-        return false;
-      }
-      if (!booleans.includes(key) && key !== 'value') {
-        return false;
-      }
-    }
-    return true;
-  }
-  return false;
+	if (!isObject(obj)) {
+		return false;
+	}
+	const desc = key ? Object.getOwnPropertyDescriptor(obj, key) : obj;
+	if (isObject(desc)) {
+		const booleans = [
+			'configurable', 'enumerable', 'writable',
+		];
+		if (!hasOwn(desc, 'value') || hasOwn(desc, 'get') || hasOwn(desc, 'set')) {
+			return false;
+		}
+		for (const descKey of Object.keys(desc)) {
+			if (booleans.includes(descKey) && typeof desc[descKey] !== 'boolean') {
+				return false;
+			}
+			if (!booleans.includes(descKey) && descKey !== 'value') {
+				return false;
+			}
+		}
+		return true;
+	}
+	return false;
 };
 
 module.exports = isDescriptor;

package.json

@@ -1,69 +1,73 @@
 {
-  "name": "is-data-descriptor",
-  "description": "Returns true if a value has the characteristics of a valid JavaScript data descriptor.",
-  "version": "2.0.0",
-  "homepage": "https://github.com/jonschlinkert/is-data-descriptor",
-  "author": "Jon Schlinkert (https://github.com/jonschlinkert)",
-  "contributors": [
-    "Jon Schlinkert (http://twitter.com/jonschlinkert)",
-    "Rouven Weßling (www.rouvenwessling.de)"
-  ],
-  "repository": "jonschlinkert/is-data-descriptor",
-  "bugs": {
-    "url": "https://github.com/jonschlinkert/is-data-descriptor/issues"
-  },
-  "license": "MIT",
-  "files": [
-    "index.js"
-  ],
-  "main": "index.js",
-  "engines": {
-    "node": ">=6"
-  },
-  "scripts": {
-    "test": "mocha"
-  },
-  "devDependencies": {
-    "gulp-format-md": "^1.0.0",
-    "mocha": "^3.5.3"
-  },
-  "keywords": [
-    "accessor",
-    "check",
-    "data",
-    "descriptor",
-    "get",
-    "getter",
-    "is",
-    "keys",
-    "object",
-    "properties",
-    "property",
-    "set",
-    "setter",
-    "type",
-    "valid",
-    "value"
-  ],
-  "verb": {
-    "toc": false,
-    "layout": "default",
-    "tasks": [
-      "readme"
-    ],
-    "plugins": [
-      "gulp-format-md"
-    ],
-    "related": {
-      "list": [
-        "is-accessor-descriptor",
-        "is-data-descriptor",
-        "is-descriptor",
-        "isobject"
-      ]
-    },
-    "lint": {
-      "reflinks": true
-    }
-  }
+	"name": "is-data-descriptor",
+	"description": "Returns true if a value has the characteristics of a valid JavaScript data descriptor.",
+	"version": "2.0.0",
+	"homepage": "https://github.com/jonschlinkert/is-data-descriptor",
+	"author": "Jon Schlinkert (https://github.com/jonschlinkert)",
+	"contributors": [
+		"Jon Schlinkert (http://twitter.com/jonschlinkert)",
+		"Rouven Weßling (www.rouvenwessling.de)"
+	],
+	"repository": "jonschlinkert/is-data-descriptor",
+	"bugs": {
+		"url": "https://github.com/jonschlinkert/is-data-descriptor/issues"
+	},
+	"license": "MIT",
+	"files": [
+		"index.js"
+	],
+	"main": "index.js",
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"lint": "eslint --ext=js,mjs .",
+		"pretest": "npm run lint",
+		"test": "mocha"
+	},
+	"devDependencies": {
+		"@ljharb/eslint-config": "^21.0.1",
+		"eslint": "=8.8.0",
+		"gulp-format-md": "^1.0.0",
+		"mocha": "^3.5.3"
+	},
+	"keywords": [
+		"accessor",
+		"check",
+		"data",
+		"descriptor",
+		"get",
+		"getter",
+		"is",
+		"keys",
+		"object",
+		"properties",
+		"property",
+		"set",
+		"setter",
+		"type",
+		"valid",
+		"value"
+	],
+	"verb": {
+		"toc": false,
+		"layout": "default",
+		"tasks": [
+			"readme"
+		],
+		"plugins": [
+			"gulp-format-md"
+		],
+		"related": {
+			"list": [
+				"is-accessor-descriptor",
+				"is-data-descriptor",
+				"is-descriptor",
+				"isobject"
+			]
+		},
+		"lint": {
+			"reflinks": true
+		}
+	}
 }