refactor: migrate to ESM

closes #3, resolves #4, closes #5

BREAKING CHANGE: this package now uses native ESM modules, which means this plugin will only work with inquirer v9 and above.

.nvmrc

@@ -0,0 +1 @@
+12

.releaserc.js

@@ -1,4 +1,4 @@
-module.exports = {
+export default {
   plugins: [
     // prettier-ignore
     ["@semantic-release/commit-analyzer", {

README.md

@@ -18,12 +18,19 @@ A comprehensive date prompt plugin for Inquirer.js.
 npm install inquirer-date-prompt
 ```
 
+> :warning: Note that the latest version of this package uses native ESM modules, which means this plugin will only work with inquirer `v9` and above. If you cannot use ESM modules yet for whatever reason, you can rely on `v2.x` until you're ready to upgrade your environment:
+>
+> ```sh
+> npm install --save inquirer-date-prompt@^2.0.0
+> ```
+
 ## Usage
 
 ```js
-const inquirer = require("inquirer");
+import inquirer from "inquirer";
+import DatePrompt from "inquirer-date-prompt";
 
-inquirer.registerPrompt("date", require("inquirer-date-prompt"));
+inquirer.registerPrompt("date", DatePrompt);
 
 inquirer.prompt({
   type: "date",
@@ -106,4 +113,4 @@ async function getTimestamp(date) {
 
 ## Caveats
 
-1. Be aware that even though this plugin works with Node ≥ v10, specifying a locale other than `'en-US'` while running on any version less than 13.0.0 will fail silently. See the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat#browser_compatibility) for more details.
+1. Be aware that even though this plugin works with Node ≥ v12, specifying a locale other than `'en-US'` while running on any version less than 13.0.0 will fail silently. See the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat/DateTimeFormat#browser_compatibility) for more details.

index.js

@@ -1,8 +1,8 @@
-const chalk = require("chalk");
-const cliCursor = require("cli-cursor");
-const Prompt = require("inquirer/lib/prompts/base");
-const observe = require("inquirer/lib/utils/events");
-const { map, takeUntil } = require("rxjs/operators");
+import chalk from "chalk";
+import cliCursor from "cli-cursor";
+import Prompt from "inquirer/lib/prompts/base.js";
+import observe from "inquirer/lib/utils/events.js";
+import { map, takeUntil } from "rxjs/operators";
 
 /**
  * A lookup object that maps each date part type to the corresponding
@@ -262,4 +262,4 @@ class DatePrompt extends Prompt {
   }
 }
 
-module.exports = DatePrompt;
+export default DatePrompt;

package.json

@@ -2,6 +2,7 @@
   "name": "inquirer-date-prompt",
   "version": "2.0.1",
   "description": "A date prompt plugin for Inquirer.js.",
+  "type": "module",
   "main": "index.js",
   "types": "index.d.ts",
   "keywords": [
@@ -20,11 +21,11 @@
   },
   "homepage": "https://github.com/haversnail/inquirer-date-prompt",
   "engines": {
-    "node": ">=10"
+    "node": ">=12"
   },
   "license": "MIT",
   "peerDependencies": {
-    "inquirer": ">= 7.x"
+    "inquirer": ">= 9.x"
   },
   "devDependencies": {
     "@semantic-release/git": "^9.0.0",