Require Node.js 12 and move to ESM

.github/workflows/main.yml

@@ -12,10 +12,9 @@ jobs:
         node-version:
           - 14
           - 12
-          - 10
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

index.d.ts

@@ -5,7 +5,7 @@ An object is plain if it's created by either `{}`, `new Object()`, or `Object.cr
 
 @example
 ```
-import isPlainObject = require('is-plain-obj');
+import isPlainObject from 'is-plain-obj';
 
 isPlainObject({foo: 'bar'});
 //=> true
@@ -24,6 +24,4 @@ isPlainObject(new Unicorn());
 //=> false
 ```
 */
-declare function isPlainObject<Value = unknown>(value: unknown): value is Record<string | number | symbol, Value>;
-
-export = isPlainObject;
+export default function isPlainObject<Value>(value: unknown): value is Record<string | number | symbol, Value>;

index.js

@@ -1,10 +1,8 @@
-'use strict';
-
-module.exports = value => {
+export default function isPlainObject(value) {
 	if (Object.prototype.toString.call(value) !== '[object Object]') {
 		return false;
 	}
 
 	const prototype = Object.getPrototypeOf(value);
 	return prototype === null || prototype === Object.prototype;
-};
+}

index.test-d.ts

@@ -1,5 +1,5 @@
 import {expectAssignable} from 'tsd';
-import isPlainObject = require('.');
+import isPlainObject from './index.js';
 
 const foo = 'foo';
 

package.json

@@ -10,8 +10,10 @@
 		"email": "sindresorhus@gmail.com",
 		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
+	"exports": "./index.js",
 	"engines": {
-		"node": ">=10"
+		"node": ">=12"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -32,8 +34,8 @@
 		"simple"
 	],
 	"devDependencies": {
-		"ava": "^2.4.0",
-		"tsd": "^0.13.1",
-		"xo": "^0.33.1"
+		"ava": "^3.15.0",
+		"tsd": "^0.14.0",
+		"xo": "^0.38.2"
 	}
 }

readme.md

@@ -13,7 +13,7 @@ $ npm install is-plain-obj
 ## Usage
 
 ```js
-const isPlainObject = require('is-plain-obj');
+import isPlainObject from 'is-plain-obj';
 
 isPlainObject({foo: 'bar'});
 //=> true

test.js

@@ -1,5 +1,5 @@
 import test from 'ava';
-import isPlainObject from '.';
+import isPlainObject from './index.js';
 
 function Foo(x) {
 	this.x = x;