some cleanups

README.md

@@ -12,7 +12,7 @@ This library does not provides polyfills for Set and Map.
 ```sh
 yarn add json-set-map
 ```
-The current version supports `node v6.x+` and modern browsers.
+The current version supports `node v10.x+` and modern browsers.
 
 ## Usage
 * Typescript and es6

package.json

@@ -51,7 +51,7 @@
     "README.md"
   ],
   "engines": {
-    "node": ">=8.x"
+    "node": ">=10.x"
   },
   "nyc": {
     "reporter": [

src/map.ts

@@ -3,7 +3,7 @@ import { Parser } from './utils';
 /** Extends Map to add toJSON and fromJSON */
 export default class SerializableMap<K, V> extends Map<K, V> {
   /**
-   * Called automaticly by JSON.stringify
+   * Called automatically by JSON.stringify
    * @return {[K, V][]} An array of two elements tuple.
    */
   toJSON(): [K, V][] {

src/set.ts

@@ -3,7 +3,7 @@ import { Parser } from './utils';
 /** Extends Set to add toJSON and fromJSON */
 export default class SerializableSet<T> extends Set<T> {
   /**
-   * Called automaticly by JSON.stringify
+   * Called automatically by JSON.stringify
    * @return {T[]} An array of elements.
    */
   toJSON(): T[] {